5k7u - Revision history

OCA at 13:04, 1 March 2024

OCA — Fri, 01 Mar 2024 13:04:49 GMT

←Older revision		Revision as of 13:04, 1 March 2024
Line 10:		Line 10:
	== Function ==		== Function ==
	[https://www.uniprot.org/uniprot/MTA70_HUMAN MTA70_HUMAN] N6-methyltransferase that methylates adenosine residues of some RNAs and acts as a regulator of the circadian clock, differentiation of embryonic stem cells and primary miRNA processing. N6-methyladenosine (m6A), which takes place at the 5'-[AG]GAC-3' consensus sites of some mRNAs, plays a role in the efficiency of mRNA splicing, processing, translation efficiency, editing and mRNA stability (PubMed:22575960, PubMed:24284625, PubMed:25719671, PubMed:25799998, PubMed:26321680, PubMed:26593424, PubMed:9409616). M6A regulates the length of the circadian clock: acts as a early pace-setter in the circadian loop by putting mRNA production on a fast-track for facilitating nuclear processing, thereby providing an early point of control in setting the dynamics of the feedback loop (By similarity). M6A also acts as a regulator of mRNA stability: in embryonic stem cells (ESCs), m6A methylation of mRNAs encoding key naive pluripotency-promoting transcripts results in transcript destabilization, promoting differentiation of ESCs (By similarity). M6A also takes place in other RNA molecules, such as primary miRNA (pri-miRNAs) (PubMed:25799998). Mediates methylation of pri-miRNAs, marking them for recognition and processing by DGCR8 (PubMed:25799998).[UniProtKB:Q8C3P7]<ref>PMID:22575960</ref> <ref>PMID:24284625</ref> <ref>PMID:25719671</ref> <ref>PMID:25799998</ref> <ref>PMID:26321680</ref> <ref>PMID:26593424</ref> <ref>PMID:9409616</ref>		[https://www.uniprot.org/uniprot/MTA70_HUMAN MTA70_HUMAN] N6-methyltransferase that methylates adenosine residues of some RNAs and acts as a regulator of the circadian clock, differentiation of embryonic stem cells and primary miRNA processing. N6-methyladenosine (m6A), which takes place at the 5'-[AG]GAC-3' consensus sites of some mRNAs, plays a role in the efficiency of mRNA splicing, processing, translation efficiency, editing and mRNA stability (PubMed:22575960, PubMed:24284625, PubMed:25719671, PubMed:25799998, PubMed:26321680, PubMed:26593424, PubMed:9409616). M6A regulates the length of the circadian clock: acts as a early pace-setter in the circadian loop by putting mRNA production on a fast-track for facilitating nuclear processing, thereby providing an early point of control in setting the dynamics of the feedback loop (By similarity). M6A also acts as a regulator of mRNA stability: in embryonic stem cells (ESCs), m6A methylation of mRNAs encoding key naive pluripotency-promoting transcripts results in transcript destabilization, promoting differentiation of ESCs (By similarity). M6A also takes place in other RNA molecules, such as primary miRNA (pri-miRNAs) (PubMed:25799998). Mediates methylation of pri-miRNAs, marking them for recognition and processing by DGCR8 (PubMed:25799998).[UniProtKB:Q8C3P7]<ref>PMID:22575960</ref> <ref>PMID:24284625</ref> <ref>PMID:25719671</ref> <ref>PMID:25799998</ref> <ref>PMID:26321680</ref> <ref>PMID:26593424</ref> <ref>PMID:9409616</ref>
-	<div style="background-color:#fffaf0;">
-	== Publication Abstract from PubMed ==
-	N(6)-methyladenosine (m(6)A) is a prevalent, reversible chemical modification of functional RNAs and is important for central events in biology. The core m(6)A writers are Mettl3 and Mettl14, which both contain methyltransferase domains. How Mettl3 and Mettl14 cooperate to catalyze methylation of adenosines has remained elusive. We present crystal structures of the complex of Mettl3/Mettl14 methyltransferase domains in apo form as well as with bound S-adenosylmethionine (SAM) or S-adenosylhomocysteine (SAH) in the catalytic site. We determine that the heterodimeric complex of methyltransferase domains, combined with CCCH motifs, constitutes the minimally required regions for creating m(6)A modifications in vitro. We also show that Mettl3 is the catalytically active subunit, while Mettl14 plays a structural role critical for substrate recognition. Our model provides a molecular explanation for why certain mutations of Mettl3 and Mettl14 lead to impaired function of the methyltransferase complex.
-
-	Structural Basis for Cooperative Function of Mettl3 and Mettl14 Methyltransferases.,Wang P, Doxtader KA, Nam Y Mol Cell. 2016 Jul 21;63(2):306-17. doi: 10.1016/j.molcel.2016.05.041. Epub 2016 , Jun 30. PMID:27373337<ref>PMID:27373337</ref>
-
-	From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
-	</div>
-	<div class="pdbe-citations 5k7u" style="background-color:#fffaf0;"></div>
	== References ==		== References ==
	<references/>		<references/>

OCA at 10:42, 27 September 2023

OCA — Wed, 27 Sep 2023 10:42:52 GMT

←Older revision		Revision as of 10:42, 27 September 2023
Line 3:		Line 3:
	<StructureSection load='5k7u' size='340' side='right'caption='[[5k7u]], [[Resolution\|resolution]] 1.70Å' scene=''>		<StructureSection load='5k7u' size='340' side='right'caption='[[5k7u]], [[Resolution\|resolution]] 1.70Å' scene=''>
	== Structural highlights ==		== Structural highlights ==
-	<table><tr><td colspan='2'>[[5k7u]] is a 2 chain structure with sequence from [~~http~~://en.wikipedia.org/wiki/~~Human Human~~]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5K7U OCA]. For a <b>guided tour on the structure components</b> use [~~http~~://~~oca~~.~~weizmann.ac.il/oca-docs~~/fgij/fg.htm?mol=5K7U FirstGlance]. <br>	+	<table><tr><td colspan='2'>[[5k7u]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5K7U OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5K7U FirstGlance]. <br>
-	</td></tr><tr id='~~ligand~~'><td class="sblockLbl"><b>[[~~Ligand~~\|~~Ligands~~:]]</b></td><td class="sblockDat"~~><scene name='pdbligand=SAM:S-ADENOSYLMETHIONINE'>SAM</scene></td></tr>~~	+	</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models\|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution\|Resolution]] 1.7Å</td></tr>
-	~~<tr~~ id~~='related'><td class~~="~~sblockLbl~~">~~<b>[[Related_structure\|Related:]]</b></td><td class="sblockDat">[[5k7w\|5k7w]]~~, [[~~5k7m~~\|~~5k7m~~]]</td></tr>	+	<tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SAM:S-ADENOSYLMETHIONINE'>SAM</scene></td></tr>
-	<tr id='~~gene~~'><td class="sblockLbl"><b>[[~~Gene~~\|~~Gene~~:]]</b></td><td class="sblockDat"~~>METTL3, MTA70 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&~~id~~=9606 HUMAN]), METTL14, KIAA1627 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>~~	+	<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=5k7u FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5k7u OCA], [https://pdbe.org/5k7u PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5k7u RCSB], [https://www.ebi.ac.uk/pdbsum/5k7u PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5k7u ProSAT]</span></td></tr>
-	~~<tr id='activity'><td class~~="~~sblockLbl~~"><~~b>Activity:</b></td><td class~~=~~"sblockDat"><span class~~=~~'plainlinks'>[http~~:~~//en.wikipedia.org/wiki/mRNA_(2'~~-~~O-methyladenosine-N(6)-)-methyltransferase mRNA (2~~'~~-O-methyladenosine-N(6)-)-methyltransferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.1.1.62 2.1.1.62]~~ </~~span~~></td></tr>	+
-	<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[~~http~~://~~oca~~.~~weizmann.ac.il/oca-docs~~/fgij/fg.htm?mol=5k7u FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5k7u OCA], [~~http~~://pdbe.org/5k7u PDBe], [~~http~~://www.rcsb.org/pdb/explore.do?structureId=5k7u RCSB], [~~http~~://www.ebi.ac.uk/pdbsum/5k7u PDBsum], [~~http~~://prosat.h-its.org/prosat/prosatexe?pdbcode=5k7u ProSAT]</span></td></tr>	+
	</table>		</table>
	== Function ==		== Function ==
-	[~~[http~~://www.uniprot.org/uniprot/MTA70_HUMAN MTA70_HUMAN]] N6-methyltransferase that methylates adenosine residues of some RNAs and acts as a regulator of the circadian clock, differentiation of embryonic stem cells and primary miRNA processing. N6-methyladenosine (m6A), which takes place at the 5'-[AG]GAC-3' consensus sites of some mRNAs, plays a role in the efficiency of mRNA splicing, processing, translation efficiency, editing and mRNA stability (PubMed:22575960, PubMed:24284625, PubMed:25719671, PubMed:25799998, PubMed:26321680, PubMed:26593424, PubMed:9409616). M6A regulates the length of the circadian clock: acts as a early pace-setter in the circadian loop by putting mRNA production on a fast-track for facilitating nuclear processing, thereby providing an early point of control in setting the dynamics of the feedback loop (By similarity). M6A also acts as a regulator of mRNA stability: in embryonic stem cells (ESCs), m6A methylation of mRNAs encoding key naive pluripotency-promoting transcripts results in transcript destabilization, promoting differentiation of ESCs (By similarity). M6A also takes place in other RNA molecules, such as primary miRNA (pri-miRNAs) (PubMed:25799998). Mediates methylation of pri-miRNAs, marking them for recognition and processing by DGCR8 (PubMed:25799998).[UniProtKB:Q8C3P7]<ref>PMID:22575960</ref> <ref>PMID:24284625</ref> <ref>PMID:25719671</ref> <ref>PMID:25799998</ref> <ref>PMID:26321680</ref> <ref>PMID:26593424</ref> <ref>PMID:9409616</ref> [[http://www.uniprot.org/uniprot/MET14_HUMAN MET14_HUMAN]] N6-methyltransferase that methylates adenosine residues of some mRNAs and acts as a regulator of the circadian clock and differentiation of embryonic stem cells. N6-methyladenosine (m6A), which takes place at the 5'-[AG]GAC-3' consensus sites of some mRNAs, plays a role in the efficiency of mRNA splicing, processing and mRNA stability (PubMed:24316715, PubMed:24407421, PubMed:25719671). M6A regulates the length of the circadian clock: acts as a early pace-setter in the circadian loop. M6A also acts as a regulator of mRNA stability: in embryonic stem cells (ESCs), m6A methylation of mRNAs encoding key naive pluripotency-promoting transcripts results in transcript destabilization (By similarity).[UniProtKB:Q3UIK4]<ref>PMID:24316715</ref> <ref>PMID:24407421</ref> <ref>PMID:25719671</ref>	+	[https://www.uniprot.org/uniprot/MTA70_HUMAN MTA70_HUMAN] N6-methyltransferase that methylates adenosine residues of some RNAs and acts as a regulator of the circadian clock, differentiation of embryonic stem cells and primary miRNA processing. N6-methyladenosine (m6A), which takes place at the 5'-[AG]GAC-3' consensus sites of some mRNAs, plays a role in the efficiency of mRNA splicing, processing, translation efficiency, editing and mRNA stability (PubMed:22575960, PubMed:24284625, PubMed:25719671, PubMed:25799998, PubMed:26321680, PubMed:26593424, PubMed:9409616). M6A regulates the length of the circadian clock: acts as a early pace-setter in the circadian loop by putting mRNA production on a fast-track for facilitating nuclear processing, thereby providing an early point of control in setting the dynamics of the feedback loop (By similarity). M6A also acts as a regulator of mRNA stability: in embryonic stem cells (ESCs), m6A methylation of mRNAs encoding key naive pluripotency-promoting transcripts results in transcript destabilization, promoting differentiation of ESCs (By similarity). M6A also takes place in other RNA molecules, such as primary miRNA (pri-miRNAs) (PubMed:25799998). Mediates methylation of pri-miRNAs, marking them for recognition and processing by DGCR8 (PubMed:25799998).[UniProtKB:Q8C3P7]<ref>PMID:22575960</ref> <ref>PMID:24284625</ref> <ref>PMID:25719671</ref> <ref>PMID:25799998</ref> <ref>PMID:26321680</ref> <ref>PMID:26593424</ref> <ref>PMID:9409616</ref>
	<div style="background-color:#fffaf0;">		<div style="background-color:#fffaf0;">
	== Publication Abstract from PubMed ==		== Publication Abstract from PubMed ==
Line 25:		Line 23:
	__TOC__		__TOC__
	</StructureSection>		</StructureSection>
-	[[Category: ~~Human~~]]	+	[[Category: Homo sapiens]]
	[[Category: Large Structures]]		[[Category: Large Structures]]
-	[[Category: Doxtader~~, K A~~]]	+	[[Category: Doxtader KA]]
-	[[Category: Nam, Y]]	+	[[Category: Nam Y]]
-	[[Category: Wang, P]]	+	[[Category: Wang P]]
-	~~[[Category: M6a]]~~	+
-	~~[[Category: Methyladenosine]]~~	+
-	~~[[Category: Methyltransferase]]~~	+
-	~~[[Category: Transferase~~]]	+

OCA at 07:37, 24 April 2019

OCA — Wed, 24 Apr 2019 07:37:15 GMT

←Older revision		Revision as of 07:37, 24 April 2019
Line 1:		Line 1:

	==Crystal structure of the catalytic domains of Mettl3/Mettl14 complex with SAM==		==Crystal structure of the catalytic domains of Mettl3/Mettl14 complex with SAM==
-	<StructureSection load='5k7u' size='340' side='right' caption='[[5k7u]], [[Resolution\|resolution]] 1.70Å' scene=''>	+	<StructureSection load='5k7u' size='340' side='right'caption='[[5k7u]], [[Resolution\|resolution]] 1.70Å' scene=''>
	== Structural highlights ==		== Structural highlights ==
-	<table><tr><td colspan='2'>[[5k7u]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5K7U OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5K7U FirstGlance]. <br>	+	<table><tr><td colspan='2'>[[5k7u]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5K7U OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5K7U FirstGlance]. <br>
	</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SAM:S-ADENOSYLMETHIONINE'>SAM</scene></td></tr>		</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SAM:S-ADENOSYLMETHIONINE'>SAM</scene></td></tr>
	<tr id='related'><td class="sblockLbl"><b>[[Related_structure\|Related:]]</b></td><td class="sblockDat">[[5k7w\|5k7w]], [[5k7m\|5k7m]]</td></tr>		<tr id='related'><td class="sblockLbl"><b>[[Related_structure\|Related:]]</b></td><td class="sblockDat">[[5k7w\|5k7w]], [[5k7m\|5k7m]]</td></tr>
		+	<tr id='gene'><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">METTL3, MTA70 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN]), METTL14, KIAA1627 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
	<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/mRNA_(2'-O-methyladenosine-N(6)-)-methyltransferase mRNA (2'-O-methyladenosine-N(6)-)-methyltransferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.1.1.62 2.1.1.62] </span></td></tr>		<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/mRNA_(2'-O-methyladenosine-N(6)-)-methyltransferase mRNA (2'-O-methyladenosine-N(6)-)-methyltransferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.1.1.62 2.1.1.62] </span></td></tr>
	<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5k7u FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5k7u OCA], [http://pdbe.org/5k7u PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5k7u RCSB], [http://www.ebi.ac.uk/pdbsum/5k7u PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5k7u ProSAT]</span></td></tr>		<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5k7u FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5k7u OCA], [http://pdbe.org/5k7u PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5k7u RCSB], [http://www.ebi.ac.uk/pdbsum/5k7u PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5k7u ProSAT]</span></td></tr>
Line 24:		Line 25:
	__TOC__		__TOC__
	</StructureSection>		</StructureSection>
		+	[[Category: Human]]
		+	[[Category: Large Structures]]
	[[Category: Doxtader, K A]]		[[Category: Doxtader, K A]]
	[[Category: Nam, Y]]		[[Category: Nam, Y]]

OCA at 06:19, 26 July 2016

OCA — Tue, 26 Jul 2016 06:19:39 GMT

←Older revision		Revision as of 06:19, 26 July 2016
Line 11:		Line 11:
	== Function ==		== Function ==
	[[http://www.uniprot.org/uniprot/MTA70_HUMAN MTA70_HUMAN]] N6-methyltransferase that methylates adenosine residues of some RNAs and acts as a regulator of the circadian clock, differentiation of embryonic stem cells and primary miRNA processing. N6-methyladenosine (m6A), which takes place at the 5'-[AG]GAC-3' consensus sites of some mRNAs, plays a role in the efficiency of mRNA splicing, processing, translation efficiency, editing and mRNA stability (PubMed:22575960, PubMed:24284625, PubMed:25719671, PubMed:25799998, PubMed:26321680, PubMed:26593424, PubMed:9409616). M6A regulates the length of the circadian clock: acts as a early pace-setter in the circadian loop by putting mRNA production on a fast-track for facilitating nuclear processing, thereby providing an early point of control in setting the dynamics of the feedback loop (By similarity). M6A also acts as a regulator of mRNA stability: in embryonic stem cells (ESCs), m6A methylation of mRNAs encoding key naive pluripotency-promoting transcripts results in transcript destabilization, promoting differentiation of ESCs (By similarity). M6A also takes place in other RNA molecules, such as primary miRNA (pri-miRNAs) (PubMed:25799998). Mediates methylation of pri-miRNAs, marking them for recognition and processing by DGCR8 (PubMed:25799998).[UniProtKB:Q8C3P7]<ref>PMID:22575960</ref> <ref>PMID:24284625</ref> <ref>PMID:25719671</ref> <ref>PMID:25799998</ref> <ref>PMID:26321680</ref> <ref>PMID:26593424</ref> <ref>PMID:9409616</ref> [[http://www.uniprot.org/uniprot/MET14_HUMAN MET14_HUMAN]] N6-methyltransferase that methylates adenosine residues of some mRNAs and acts as a regulator of the circadian clock and differentiation of embryonic stem cells. N6-methyladenosine (m6A), which takes place at the 5'-[AG]GAC-3' consensus sites of some mRNAs, plays a role in the efficiency of mRNA splicing, processing and mRNA stability (PubMed:24316715, PubMed:24407421, PubMed:25719671). M6A regulates the length of the circadian clock: acts as a early pace-setter in the circadian loop. M6A also acts as a regulator of mRNA stability: in embryonic stem cells (ESCs), m6A methylation of mRNAs encoding key naive pluripotency-promoting transcripts results in transcript destabilization (By similarity).[UniProtKB:Q3UIK4]<ref>PMID:24316715</ref> <ref>PMID:24407421</ref> <ref>PMID:25719671</ref>		[[http://www.uniprot.org/uniprot/MTA70_HUMAN MTA70_HUMAN]] N6-methyltransferase that methylates adenosine residues of some RNAs and acts as a regulator of the circadian clock, differentiation of embryonic stem cells and primary miRNA processing. N6-methyladenosine (m6A), which takes place at the 5'-[AG]GAC-3' consensus sites of some mRNAs, plays a role in the efficiency of mRNA splicing, processing, translation efficiency, editing and mRNA stability (PubMed:22575960, PubMed:24284625, PubMed:25719671, PubMed:25799998, PubMed:26321680, PubMed:26593424, PubMed:9409616). M6A regulates the length of the circadian clock: acts as a early pace-setter in the circadian loop by putting mRNA production on a fast-track for facilitating nuclear processing, thereby providing an early point of control in setting the dynamics of the feedback loop (By similarity). M6A also acts as a regulator of mRNA stability: in embryonic stem cells (ESCs), m6A methylation of mRNAs encoding key naive pluripotency-promoting transcripts results in transcript destabilization, promoting differentiation of ESCs (By similarity). M6A also takes place in other RNA molecules, such as primary miRNA (pri-miRNAs) (PubMed:25799998). Mediates methylation of pri-miRNAs, marking them for recognition and processing by DGCR8 (PubMed:25799998).[UniProtKB:Q8C3P7]<ref>PMID:22575960</ref> <ref>PMID:24284625</ref> <ref>PMID:25719671</ref> <ref>PMID:25799998</ref> <ref>PMID:26321680</ref> <ref>PMID:26593424</ref> <ref>PMID:9409616</ref> [[http://www.uniprot.org/uniprot/MET14_HUMAN MET14_HUMAN]] N6-methyltransferase that methylates adenosine residues of some mRNAs and acts as a regulator of the circadian clock and differentiation of embryonic stem cells. N6-methyladenosine (m6A), which takes place at the 5'-[AG]GAC-3' consensus sites of some mRNAs, plays a role in the efficiency of mRNA splicing, processing and mRNA stability (PubMed:24316715, PubMed:24407421, PubMed:25719671). M6A regulates the length of the circadian clock: acts as a early pace-setter in the circadian loop. M6A also acts as a regulator of mRNA stability: in embryonic stem cells (ESCs), m6A methylation of mRNAs encoding key naive pluripotency-promoting transcripts results in transcript destabilization (By similarity).[UniProtKB:Q3UIK4]<ref>PMID:24316715</ref> <ref>PMID:24407421</ref> <ref>PMID:25719671</ref>
		+	<div style="background-color:#fffaf0;">
		+	== Publication Abstract from PubMed ==
		+	N(6)-methyladenosine (m(6)A) is a prevalent, reversible chemical modification of functional RNAs and is important for central events in biology. The core m(6)A writers are Mettl3 and Mettl14, which both contain methyltransferase domains. How Mettl3 and Mettl14 cooperate to catalyze methylation of adenosines has remained elusive. We present crystal structures of the complex of Mettl3/Mettl14 methyltransferase domains in apo form as well as with bound S-adenosylmethionine (SAM) or S-adenosylhomocysteine (SAH) in the catalytic site. We determine that the heterodimeric complex of methyltransferase domains, combined with CCCH motifs, constitutes the minimally required regions for creating m(6)A modifications in vitro. We also show that Mettl3 is the catalytically active subunit, while Mettl14 plays a structural role critical for substrate recognition. Our model provides a molecular explanation for why certain mutations of Mettl3 and Mettl14 lead to impaired function of the methyltransferase complex.
		+
		+	Structural Basis for Cooperative Function of Mettl3 and Mettl14 Methyltransferases.,Wang P, Doxtader KA, Nam Y Mol Cell. 2016 Jul 21;63(2):306-17. doi: 10.1016/j.molcel.2016.05.041. Epub 2016 , Jun 30. PMID:27373337<ref>PMID:27373337</ref>
		+
		+	From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
		+	</div>
		+	<div class="pdbe-citations 5k7u" style="background-color:#fffaf0;"></div>
	== References ==		== References ==
	<references/>		<references/>

OCA at 18:03, 13 July 2016

OCA — Wed, 13 Jul 2016 18:03:46 GMT

←Older revision		Revision as of 18:03, 13 July 2016
Line 1:		Line 1:
-	'''Unreleased structure'''

-	~~The entry~~ 5k7u is ~~ON HOLD until Paper Publication~~	+	==Crystal structure of the catalytic domains of Mettl3/Mettl14 complex with SAM==
-		+	<StructureSection load='5k7u' size='340' side='right' caption='[[5k7u]], [[Resolution\|resolution]] 1.70Å' scene=''>
-	~~Authors~~: ~~Wang~~, P., ~~Doxtader~~, K.A., ~~Nam~~, Y.	+	== Structural highlights ==
-		+	<table><tr><td colspan='2'>[[5k7u]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5K7U OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5K7U FirstGlance]. <br>
-	~~Description~~: ~~Crystal structure~~ of the ~~catalytic domains~~ of ~~Mettl3~~/~~Mettl14 complex with SAM~~	+	</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SAM:S-ADENOSYLMETHIONINE'>SAM</scene></td></tr>
-	[[Category: ~~Unreleased Structures~~]]	+	<tr id='related'><td class="sblockLbl"><b>[[Related_structure\|Related:]]</b></td><td class="sblockDat">[[5k7w\|5k7w]], [[5k7m\|5k7m]]</td></tr>
		+	<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/mRNA_(2'-O-methyladenosine-N(6)-)-methyltransferase mRNA (2'-O-methyladenosine-N(6)-)-methyltransferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.1.1.62 2.1.1.62] </span></td></tr>
		+	<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5k7u FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5k7u OCA], [http://pdbe.org/5k7u PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5k7u RCSB], [http://www.ebi.ac.uk/pdbsum/5k7u PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5k7u ProSAT]</span></td></tr>
		+	</table>
		+	== Function ==
		+	[[http://www.uniprot.org/uniprot/MTA70_HUMAN MTA70_HUMAN]] N6-methyltransferase that methylates adenosine residues of some RNAs and acts as a regulator of the circadian clock, differentiation of embryonic stem cells and primary miRNA processing. N6-methyladenosine (m6A), which takes place at the 5'-[AG]GAC-3' consensus sites of some mRNAs, plays a role in the efficiency of mRNA splicing, processing, translation efficiency, editing and mRNA stability (PubMed:22575960, PubMed:24284625, PubMed:25719671, PubMed:25799998, PubMed:26321680, PubMed:26593424, PubMed:9409616). M6A regulates the length of the circadian clock: acts as a early pace-setter in the circadian loop by putting mRNA production on a fast-track for facilitating nuclear processing, thereby providing an early point of control in setting the dynamics of the feedback loop (By similarity). M6A also acts as a regulator of mRNA stability: in embryonic stem cells (ESCs), m6A methylation of mRNAs encoding key naive pluripotency-promoting transcripts results in transcript destabilization, promoting differentiation of ESCs (By similarity). M6A also takes place in other RNA molecules, such as primary miRNA (pri-miRNAs) (PubMed:25799998). Mediates methylation of pri-miRNAs, marking them for recognition and processing by DGCR8 (PubMed:25799998).[UniProtKB:Q8C3P7]<ref>PMID:22575960</ref> <ref>PMID:24284625</ref> <ref>PMID:25719671</ref> <ref>PMID:25799998</ref> <ref>PMID:26321680</ref> <ref>PMID:26593424</ref> <ref>PMID:9409616</ref> [[http://www.uniprot.org/uniprot/MET14_HUMAN MET14_HUMAN]] N6-methyltransferase that methylates adenosine residues of some mRNAs and acts as a regulator of the circadian clock and differentiation of embryonic stem cells. N6-methyladenosine (m6A), which takes place at the 5'-[AG]GAC-3' consensus sites of some mRNAs, plays a role in the efficiency of mRNA splicing, processing and mRNA stability (PubMed:24316715, PubMed:24407421, PubMed:25719671). M6A regulates the length of the circadian clock: acts as a early pace-setter in the circadian loop. M6A also acts as a regulator of mRNA stability: in embryonic stem cells (ESCs), m6A methylation of mRNAs encoding key naive pluripotency-promoting transcripts results in transcript destabilization (By similarity).[UniProtKB:Q3UIK4]<ref>PMID:24316715</ref> <ref>PMID:24407421</ref> <ref>PMID:25719671</ref>
		+	== References ==
		+	<references/>
		+	__TOC__
		+	</StructureSection>
		+	[[Category: Doxtader, K A]]
		+	[[Category: Nam, Y]]
	[[Category: Wang, P]]		[[Category: Wang, P]]
-	[[Category: ~~Nam, Y~~]]	+	[[Category: M6a]]
-	[[Category: ~~Doxtader, K.A~~]]	+	[[Category: Methyladenosine]]
		+	[[Category: Methyltransferase]]
		+	[[Category: Transferase]]

OCA at 13:31, 20 June 2016

OCA — Mon, 20 Jun 2016 13:31:22 GMT

←Older revision		Revision as of 13:31, 20 June 2016
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	'''Unreleased structure'''		'''Unreleased structure'''

-	The entry 5k7u is ON HOLD	+	The entry 5k7u is ON HOLD until Paper Publication

-	Authors: ~~Ping~~ Wang, ~~Katelyn A~~. Doxtader, ~~Yunsun~~ Nam	+	Authors: Wang, P., Doxtader, K.A., Nam, Y.

	Description: Crystal structure of the catalytic domains of Mettl3/Mettl14 complex with SAM		Description: Crystal structure of the catalytic domains of Mettl3/Mettl14 complex with SAM
	[[Category: Unreleased Structures]]		[[Category: Unreleased Structures]]
-	[[Category: ~~Ping~~ Wang, ~~Katelyn A.~~ Doxtader, ~~Yunsun Nam~~]]	+	[[Category: Wang, P]]
		+	[[Category: Nam, Y]]
		+	[[Category: Doxtader, K.A]]

OCA: Protected "5k7u" [edit=sysop:move=sysop]

OCA — Wed, 01 Jun 2016 14:26:19 GMT

Protected "5k7u" [edit=sysop:move=sysop]

←Older revision

Revision as of 14:26, 1 June 2016

OCA: New page: '''Unreleased structure''' The entry 5k7u is ON HOLD Authors: Ping Wang, Katelyn A. Doxtader, Yunsun Nam Description: Crystal structure of the catalytic domains of Mettl3/Mettl14 compl...

OCA — Wed, 01 Jun 2016 14:26:18 GMT

New page: '''Unreleased structure''' The entry 5k7u is ON HOLD Authors: Ping Wang, Katelyn A. Doxtader, Yunsun Nam Description: Crystal structure of the catalytic domains of Mettl3/Mettl14 compl...

New page

'''Unreleased structure'''

The entry 5k7u is ON HOLD

Authors: Ping Wang, Katelyn A. Doxtader, Yunsun Nam

Description: Crystal structure of the catalytic domains of Mettl3/Mettl14 complex with SAM
[[Category: Unreleased Structures]]
[[Category: Ping Wang, Katelyn A. Doxtader, Yunsun Nam]]