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| | ==Crystal Structure of rat Protein Arginine Methyltransferase 1 (PRMT1)M48L mutant== | | ==Crystal Structure of rat Protein Arginine Methyltransferase 1 (PRMT1)M48L mutant== |
| - | <StructureSection load='3q7e' size='340' side='right' caption='[[3q7e]], [[Resolution|resolution]] 2.20Å' scene=''> | + | <StructureSection load='3q7e' size='340' side='right'caption='[[3q7e]], [[Resolution|resolution]] 2.20Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[3q7e]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Buffalo_rat Buffalo rat]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3Q7E OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3Q7E FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[3q7e]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Buffalo_rat Buffalo rat]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3Q7E OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3Q7E FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=SAH:S-ADENOSYL-L-HOMOCYSTEINE'>SAH</scene></td></tr> | + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=SAH:S-ADENOSYL-L-HOMOCYSTEINE'>SAH</scene></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">Prmt1, Hrmt1l2 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10116 Buffalo rat])</td></tr> | + | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">Prmt1, Hrmt1l2 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10116 Buffalo rat])</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=3q7e FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3q7e OCA], [http://pdbe.org/3q7e PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3q7e RCSB], [http://www.ebi.ac.uk/pdbsum/3q7e PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3q7e ProSAT]</span></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=3q7e FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3q7e OCA], [https://pdbe.org/3q7e PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3q7e RCSB], [https://www.ebi.ac.uk/pdbsum/3q7e PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3q7e ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/ANM1_RAT ANM1_RAT]] Arginine methyltransferase that methylates (mono and asymmetric dimethylation) the guanidino nitrogens of arginyl residues present in proteins such as ESR1, histone H2, H3 and H4, PIAS1, HNRNPA1, HNRNPD, NFATC2IP, SUPT5H, TAF15 and EWS. Constitutes the main enzyme that mediates monomethylation and asymmetric dimethylation of histone H4 'Arg-4' (H4R3me1 and H4R3me2a, respectively), a specific tag for epigenetic transcriptional activation. Together with dimethylated PIAS1, represses STAT1 transcriptional activity, in the late phase of interferon gamma (IFN-gamma) signaling. May be involved in the regulation of TAF15 transcriptional activity, act as an activator of estrogen receptor (ER)-mediated transactivation, play a key role in neurite outgrowth and act as a negative regulator of megakaryocytic differentiation, by modulating p38 MAPK pathway.<ref>PMID:15837430</ref> <ref>PMID:18492485</ref> <ref>PMID:12737817</ref> | + | [[https://www.uniprot.org/uniprot/ANM1_RAT ANM1_RAT]] Arginine methyltransferase that methylates (mono and asymmetric dimethylation) the guanidino nitrogens of arginyl residues present in proteins such as ESR1, histone H2, H3 and H4, PIAS1, HNRNPA1, HNRNPD, NFATC2IP, SUPT5H, TAF15 and EWS. Constitutes the main enzyme that mediates monomethylation and asymmetric dimethylation of histone H4 'Arg-4' (H4R3me1 and H4R3me2a, respectively), a specific tag for epigenetic transcriptional activation. Together with dimethylated PIAS1, represses STAT1 transcriptional activity, in the late phase of interferon gamma (IFN-gamma) signaling. May be involved in the regulation of TAF15 transcriptional activity, act as an activator of estrogen receptor (ER)-mediated transactivation, play a key role in neurite outgrowth and act as a negative regulator of megakaryocytic differentiation, by modulating p38 MAPK pathway.<ref>PMID:15837430</ref> <ref>PMID:18492485</ref> <ref>PMID:12737817</ref> |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | </StructureSection> | | </StructureSection> |
| | [[Category: Buffalo rat]] | | [[Category: Buffalo rat]] |
| | + | [[Category: Large Structures]] |
| | [[Category: Hevel, J M]] | | [[Category: Hevel, J M]] |
| | [[Category: Johnson, S J]] | | [[Category: Johnson, S J]] |
| Structural highlights
Function
[ANM1_RAT] Arginine methyltransferase that methylates (mono and asymmetric dimethylation) the guanidino nitrogens of arginyl residues present in proteins such as ESR1, histone H2, H3 and H4, PIAS1, HNRNPA1, HNRNPD, NFATC2IP, SUPT5H, TAF15 and EWS. Constitutes the main enzyme that mediates monomethylation and asymmetric dimethylation of histone H4 'Arg-4' (H4R3me1 and H4R3me2a, respectively), a specific tag for epigenetic transcriptional activation. Together with dimethylated PIAS1, represses STAT1 transcriptional activity, in the late phase of interferon gamma (IFN-gamma) signaling. May be involved in the regulation of TAF15 transcriptional activity, act as an activator of estrogen receptor (ER)-mediated transactivation, play a key role in neurite outgrowth and act as a negative regulator of megakaryocytic differentiation, by modulating p38 MAPK pathway.[1] [2] [3]
Publication Abstract from PubMed
Protein-arginine methyltransferases aid in the regulation of many biological processes by methylating specific arginyl groups within targeted proteins. The varied nature of the response to methylation is due in part to the diverse product specificity displayed by the protein-arginine methyltransferases. In addition to site location within a protein, biological response is also determined by the degree (mono-/dimethylation) and type of arginine dimethylation (asymmetric/symmetric). Here, we have identified two strictly conserved methionine residues in the PRMT1 active site that are not only important for activity but also control substrate specificity. Mutation of Met-155 or Met-48 results in a loss in activity and a change in distribution of mono- and dimethylated products. The altered substrate specificity of M155A and M48L mutants is also evidenced by automethylation. Investigation into the mechanistic basis of altered substrate recognition led us to consider each methyl transfer step separately. Single turnover experiments reveal that the rate of transfer of the second methyl group is much slower than transfer of the first methyl group in M48L, especially for arginine residues located in the center of the peptide substrate where turnover of the monomethylated species is negligible. Thus, altered product specificity in M48L originates from the differential effect of the mutation on the two rates. Characterization of the two active-site methionines provides the first insight into how the PRMT1 active site is engineered to control product specificity.
Investigation of the molecular origins of protein-arginine methyltransferase I (PRMT1) product specificity reveals a role for two conserved methionine residues.,Gui S, Wooderchak WL, Daly MP, Porter PJ, Johnson SJ, Hevel JM J Biol Chem. 2011 Aug 19;286(33):29118-26. Epub 2011 Jun 21. PMID:21697082[4]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Lim Y, Kwon YH, Won NH, Min BH, Park IS, Paik WK, Kim S. Multimerization of expressed protein-arginine methyltransferases during the growth and differentiation of rat liver. Biochim Biophys Acta. 2005 May 25;1723(1-3):240-7. Epub 2005 Mar 17. PMID:15837430 doi:10.1016/j.bbagen.2005.02.015
- ↑ Iwasaki H. Involvement of PRMT1 in hnRNPQ activation and internalization of insulin receptor. Biochem Biophys Res Commun. 2008 Jul 25;372(2):314-9. doi:, 10.1016/j.bbrc.2008.05.051. Epub 2008 May 19. PMID:18492485 doi:10.1016/j.bbrc.2008.05.051
- ↑ Zhang X, Cheng X. Structure of the predominant protein arginine methyltransferase PRMT1 and analysis of its binding to substrate peptides. Structure. 2003 May;11(5):509-20. PMID:12737817
- ↑ Gui S, Wooderchak WL, Daly MP, Porter PJ, Johnson SJ, Hevel JM. Investigation of the molecular origins of protein-arginine methyltransferase I (PRMT1) product specificity reveals a role for two conserved methionine residues. J Biol Chem. 2011 Aug 19;286(33):29118-26. Epub 2011 Jun 21. PMID:21697082 doi:http://dx.doi.org/10.1074/jbc.M111.224097
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