7mrh

From Proteopedia

(Difference between revisions)

Current revision

Crystal structure of the first bromodomain (BD1) of human BRDT bound to NC-II-259

Structural highlights

7mrh is a 2 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 1.98Å
Ligands:
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

BRDT_HUMAN Testis-specific chromatin protein that specifically binds histone H4 acetylated at 'Lys-5' and 'Lys-8' (H4K5ac and H4K8ac, respectively) and plays a key role in spermatogenesis. Required in late pachytene spermatocytes: plays a role in meiotic and post-meiotic cells by binding to acetylated histones at the promoter of specific meiotic and post-meiotic genes, facilitating their activation at the appropriate time. In the post-meiotic phase of spermatogenesis, binds to hyperacetylated histones and participates in their general removal from DNA. Also acts as a component of the splicing machinery in pachytene spermatocytes and round spermatids and participates in 3'-UTR truncation of specific mRNAs in post-meiotic spermatids. Required for chromocenter organization, a structure comprised of peri-centromeric heterochromatin.^[1] ^[2] ^[3]

Publication Abstract from PubMed

Bromodomain and extraterminal domain (BET) proteins are important regulators of gene transcription and chromatin remodeling. BET family members BRD4 and BRDT are validated targets for cancer and male contraceptive drug development, respectively. Due to the high structural similarity of the acetyl-lysine binding sites, most reported inhibitors lack intra-BET selectivity. We surmised that protein-protein interactions induced by bivalent inhibitors may differ between BRD4 and BRDT, conferring an altered selectivity profile. Starting from nonselective monovalent inhibitors, we developed cell-active bivalent BET inhibitors with increased activity and selectivity for BRDT. X-ray crystallographic and solution studies revealed unique structural states of BRDT and BRD4 upon interaction with bivalent inhibitors. Varying spacer lengths and symmetric vs unsymmetric connections resulted in the same dimeric states, whereas different chemotypes induced different dimers. The findings indicate that the increased intra-BET selectivity of bivalent inhibitors is due to the differential plasticity of BET bromodomains upon inhibitor-induced dimerization.

Bivalent BET Bromodomain Inhibitors Confer Increased Potency and Selectivity for BRDT via Protein Conformational Plasticity.,Guan X, Cheryala N, Karim RM, Chan A, Berndt N, Qi J, Georg GI, Schonbrunn E J Med Chem. 2022 Jul 22. doi: 10.1021/acs.jmedchem.2c00453. PMID:35867655^[4]

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

References

↑ Jones MH, Numata M, Shimane M. Identification and characterization of BRDT: A testis-specific gene related to the bromodomain genes RING3 and Drosophila fsh. Genomics. 1997 Nov 1;45(3):529-34. PMID:9367677 doi:S0888-7543(97)95000-X
↑ Zheng Y, Yuan W, Zhou Z, Xu M, Sha JH. Molecular cloning and expression of a novel alternative splice variant of BRDT gene. Int J Mol Med. 2005 Feb;15(2):315-21. PMID:15647849
↑ Matzuk MM, McKeown MR, Filippakopoulos P, Li Q, Ma L, Agno JE, Lemieux ME, Picaud S, Yu RN, Qi J, Knapp S, Bradner JE. Small-Molecule Inhibition of BRDT for Male Contraception. Cell. 2012 Aug 17;150(4):673-684. PMID:22901802 doi:10.1016/j.cell.2012.06.045
↑ Guan X, Cheryala N, Karim RM, Chan A, Berndt N, Qi J, Georg GI, Schonbrunn E. Bivalent BET Bromodomain Inhibitors Confer Increased Potency and Selectivity for BRDT via Protein Conformational Plasticity. J Med Chem. 2022 Jul 22. doi: 10.1021/acs.jmedchem.2c00453. PMID:35867655 doi:http://dx.doi.org/10.1021/acs.jmedchem.2c00453

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/7mrh"

Categories: Homo sapiens | Large Structures | Chan A | Schonbrunn E

@@ Line 4: / Line 4: @@
 == Structural highlights ==
 <table><tr><td colspan='2'>[[7mrh]] 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=7MRH OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7MRH FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ZMJ:N-[3-(2-methyl-1-oxo-1,2-dihydroisoquinolin-4-yl)phenyl]ethanesulfonamide'>ZMJ</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]] 1.98&#8491;</td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ZMJ:N-[3-(2-methyl-1-oxo-1,2-dihydroisoquinolin-4-yl)phenyl]ethanesulfonamide'>ZMJ</scene></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=7mrh FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7mrh OCA], [https://pdbe.org/7mrh PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7mrh RCSB], [https://www.ebi.ac.uk/pdbsum/7mrh PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7mrh ProSAT]</span></td></tr>
 </table>
 == Function ==
-[[https://www.uniprot.org/uniprot/BRDT_HUMAN BRDT_HUMAN]] Testis-specific chromatin protein that specifically binds histone H4 acetylated at 'Lys-5' and 'Lys-8' (H4K5ac and H4K8ac, respectively) and plays a key role in spermatogenesis. Required in late pachytene spermatocytes: plays a role in meiotic and post-meiotic cells by binding to acetylated histones at the promoter of specific meiotic and post-meiotic genes, facilitating their activation at the appropriate time. In the post-meiotic phase of spermatogenesis, binds to hyperacetylated histones and participates in their general removal from DNA. Also acts as a component of the splicing machinery in pachytene spermatocytes and round spermatids and participates in 3'-UTR truncation of specific mRNAs in post-meiotic spermatids. Required for chromocenter organization, a structure comprised of peri-centromeric heterochromatin.<ref>PMID:9367677</ref> <ref>PMID:15647849</ref> <ref>PMID:22901802</ref>
+[https://www.uniprot.org/uniprot/BRDT_HUMAN BRDT_HUMAN] Testis-specific chromatin protein that specifically binds histone H4 acetylated at 'Lys-5' and 'Lys-8' (H4K5ac and H4K8ac, respectively) and plays a key role in spermatogenesis. Required in late pachytene spermatocytes: plays a role in meiotic and post-meiotic cells by binding to acetylated histones at the promoter of specific meiotic and post-meiotic genes, facilitating their activation at the appropriate time. In the post-meiotic phase of spermatogenesis, binds to hyperacetylated histones and participates in their general removal from DNA. Also acts as a component of the splicing machinery in pachytene spermatocytes and round spermatids and participates in 3'-UTR truncation of specific mRNAs in post-meiotic spermatids. Required for chromocenter organization, a structure comprised of peri-centromeric heterochromatin.<ref>PMID:9367677</ref> <ref>PMID:15647849</ref> <ref>PMID:22901802</ref>
 <div style="background-color:#fffaf0;">
 == Publication Abstract from PubMed ==

7mrh

From Proteopedia

Current revision

Crystal structure of the first bromodomain (BD1) of human BRDT bound to NC-II-259

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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