5ola

From Proteopedia

(Difference between revisions)

Revision as of 07:31, 29 November 2017

Structure of mitochondrial transcription elongation complex in complex with elongation factor TEFM

Structural highlights

5ola is a 12 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Gene:	TEFM, C17orf42 (HUMAN), POLRMT (HUMAN)
Activity:	DNA-directed RNA polymerase, with EC number 2.7.7.6
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[TEFM_HUMAN] Transcription elongation factor which increases mitochondrial RNA polymerase processivity. Regulates transcription of the mitochondrial genome, including genes important for the oxidative phosphorylation machinery.^[1] [RPOM_HUMAN] DNA-dependent RNA polymerase catalyzes the transcription of mitochondrial DNA into RNA using the four ribonucleoside triphosphates as substrates.^[2]

Publication Abstract from PubMed

In human mitochondria, transcription termination events at a G-quadruplex region near the replication origin are thought to drive replication of mtDNA by generation of an RNA primer. This process is suppressed by a key regulator of mtDNA-the transcription factor TEFM. We determined the structure of an anti-termination complex in which TEFM is bound to transcribing mtRNAP. The structure reveals interactions of the dimeric pseudonuclease core of TEFM with mobile structural elements in mtRNAP and the nucleic acid components of the elongation complex (EC). Binding of TEFM to the DNA forms a downstream "sliding clamp," providing high processivity to the EC. TEFM also binds near the RNA exit channel to prevent formation of the RNA G-quadruplex structure required for termination and thus synthesis of the replication primer. Our data provide insights into target specificity of TEFM and mechanisms by which it regulates the switch between transcription and replication of mtDNA.

Mechanism of Transcription Anti-termination in Human Mitochondria.,Hillen HS, Parshin AV, Agaronyan K, Morozov YI, Graber JJ, Chernev A, Schwinghammer K, Urlaub H, Anikin M, Cramer P, Temiakov D Cell. 2017 Oct 7. pii: S0092-8674(17)31129-7. doi: 10.1016/j.cell.2017.09.035. PMID:29033127^[3]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Minczuk M, He J, Duch AM, Ettema TJ, Chlebowski A, Dzionek K, Nijtmans LG, Huynen MA, Holt IJ. TEFM (c17orf42) is necessary for transcription of human mtDNA. Nucleic Acids Res. 2011 May;39(10):4284-99. doi: 10.1093/nar/gkq1224. Epub 2011, Jan 28. PMID:21278163 doi:10.1093/nar/gkq1224
↑ Minczuk M, He J, Duch AM, Ettema TJ, Chlebowski A, Dzionek K, Nijtmans LG, Huynen MA, Holt IJ. TEFM (c17orf42) is necessary for transcription of human mtDNA. Nucleic Acids Res. 2011 May;39(10):4284-99. doi: 10.1093/nar/gkq1224. Epub 2011, Jan 28. PMID:21278163 doi:10.1093/nar/gkq1224
↑ Hillen HS, Parshin AV, Agaronyan K, Morozov YI, Graber JJ, Chernev A, Schwinghammer K, Urlaub H, Anikin M, Cramer P, Temiakov D. Mechanism of Transcription Anti-termination in Human Mitochondria. Cell. 2017 Oct 7. pii: S0092-8674(17)31129-7. doi: 10.1016/j.cell.2017.09.035. PMID:29033127 doi:http://dx.doi.org/10.1016/j.cell.2017.09.035

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/5ola"

@@ Line 3: / Line 3: @@
 <StructureSection load='5ola' size='340' side='right' caption='[[5ola]], [[Resolution|resolution]] 3.90&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[5ola]] is a 12 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5OLA OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5OLA FirstGlance]. <br>
+<table><tr><td colspan='2'>[[5ola]] is a 12 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=5OLA OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5OLA FirstGlance]. <br>
-</td></tr><tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/DNA-directed_RNA_polymerase DNA-directed RNA polymerase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.7.6 2.7.7.6] </span></td></tr>
+</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">TEFM, C17orf42 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN]), POLRMT ([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/DNA-directed_RNA_polymerase DNA-directed RNA polymerase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.7.6 2.7.7.6] </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=5ola FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5ola OCA], [http://pdbe.org/5ola PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5ola RCSB], [http://www.ebi.ac.uk/pdbsum/5ola PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5ola ProSAT]</span></td></tr>
 </table>
@@ Line 23: / Line 24: @@
 </StructureSection>
 [[Category: DNA-directed RNA polymerase]]
+[[Category: Human]]
 [[Category: Agaronyan, K]]
 [[Category: Anikin, M]]

5ola

From Proteopedia

Revision as of 07:31, 29 November 2017

Structure of mitochondrial transcription elongation complex in complex with elongation factor TEFM

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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