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4m36

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Revision as of 19:26, 5 August 2016

Crystal structure of Trypanosoma brucei protein arginine methyltransferase 7

Structural highlights

4m36 is a 1 chain structure with sequence from Tryb2. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Related:	4m37, 4m38
Gene:	PRMT7, Tb927.7.5490 (TRYB2)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[ANM7_TRYB2] Arginine methyltransferase that specifically catalyzes the formation of omega-N monomethylarginine (MMA). Has activity toward multiple substrates in vitro. Able to mediate the arginine methylation of histones and myelin basic protein (MBP) in vitro; the relevance of such results is however unclear in vivo.

Publication Abstract from PubMed

Trypanosoma brucei protein arginine methyltransferase 7 (TbPRMT7) exclusively generates monomethylarginine (MMA), which directs biological consequences distinct from that of symmetric dimethylarginine (SDMA) and asymmetric dimethylarginine (ADMA). However, determinants controlling the strict monomethylation activity are unknown. We present the crystal structure of the TbPRMT7 active core in complex with S-adenosyl-L-homocysteine (AdoHcy) and a histone H4 peptide substrate. In the active site, residues E172, E181, and Q329 hydrogen bond the guanidino group of the target arginine and align the terminal guanidino nitrogen in a position suitable for nucleophilic attack on the methyl group of S-adenosyl-L-methionine (AdoMet). Structural comparisons and isothermal titration calorimetry data suggest that the TbPRMT7 active site is narrower than those of protein arginine dimethyltransferases, making it unsuitable to bind MMA in a manner that would support a second turnover, thus abolishing the production of SDMA and ADMA. Our results present the structural interpretations for the monomethylation activity of TbPRMT7.

Structural Determinants for the Strict Monomethylation Activity by Trypanosoma brucei Protein Arginine Methyltransferase 7.,Wang C, Zhu Y, Caceres TB, Liu L, Peng J, Wang J, Chen J, Chen X, Zhang Z, Zuo X, Gong Q, Teng M, Hevel JM, Wu J, Shi Y Structure. 2014 Apr 8. pii: S0969-2126(14)00075-6. doi:, 10.1016/j.str.2014.03.003. PMID:24726341^[1]

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

References

↑ Wang C, Zhu Y, Caceres TB, Liu L, Peng J, Wang J, Chen J, Chen X, Zhang Z, Zuo X, Gong Q, Teng M, Hevel JM, Wu J, Shi Y. Structural Determinants for the Strict Monomethylation Activity by Trypanosoma brucei Protein Arginine Methyltransferase 7. Structure. 2014 Apr 8. pii: S0969-2126(14)00075-6. doi:, 10.1016/j.str.2014.03.003. PMID:24726341 doi:http://dx.doi.org/10.1016/j.str.2014.03.003

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/4m36"

@@ Line 1: / Line 1: @@
 ==Crystal structure of Trypanosoma brucei protein arginine methyltransferase 7==
 <StructureSection load='4m36' size='340' side='right' caption='[[4m36]], [[Resolution|resolution]] 2.04&Aring;' scene=''>
@@ Line 5: / Line 6: @@
 </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4m37|4m37]], [[4m38|4m38]]</td></tr>
 <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">PRMT7, Tb927.7.5490 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=999953 TRYB2])</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=4m36 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4m36 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4m36 RCSB], [http://www.ebi.ac.uk/pdbsum/4m36 PDBsum]</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=4m36 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4m36 OCA], [http://pdbe.org/4m36 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4m36 RCSB], [http://www.ebi.ac.uk/pdbsum/4m36 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4m36 ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 17: / Line 18: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 4m36" style="background-color:#fffaf0;"></div>
 == References ==
 <references/>

4m36

From Proteopedia

Revision as of 19:26, 5 August 2016

Crystal structure of Trypanosoma brucei protein arginine methyltransferase 7

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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