3shv

From Proteopedia

(Difference between revisions)

Current revision

Crystal structure of human MCPH1 tandem BRCT domains-gamma H2AX complex

Structural highlights

3shv is a 4 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 2.1Å
Ligands:
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Disease

MCPH1_HUMAN Premature chromosome condensation with microcephaly and intellectual deficit;Autosomal recessive primary microcephaly. Defects in MCPH1 are the cause of microcephaly primary type 1 (MCPH1) [MIM:251200; also known as true microcephaly or microcephaly vera. Microcephaly is defined as a head circumference more than 3 standard deviations below the age-related mean. Brain weight is markedly reduced and the cerebral cortex is disproportionately small. Despite this marked reduction in size, the gyral pattern is relatively well preserved, with no major abnormality in cortical architecture. Primary microcephaly is further defined by the absence of other syndromic features or significant neurological deficits. This entity is inherited as autosomal recessive trait.^[1] ^[2] ^[3]

Function

MCPH1_HUMAN Implicated in chromosome condensation and DNA damage induced cellular responses. May play a role in neurogenesis and regulation of the size of the cerebral cortex.^[4] ^[5] ^[6]

Publication Abstract from PubMed

MCPH1 is especially important for linking chromatin remodeling to DNA damage response. It contains three BRCT (BRCA1-carboxyl terminal) domains. The N-terminal region directly binds with chromatin remodeling complex SWI-SNF, and the C-terminal BRCT2-BRCT3 domains (tandem BRCT domains) are involved in cellular DNA damage response. The MCPH1 gene associates with evolution of brain size, and its variation can cause primary microcephaly. In this study we solve the crystal structures of MCPH1 natural variant (A761) C-terminal tandem BRCT domains alone as well as in complex with gammaH2AX tail. Compared with other structures of tandem BRCT domains, the most significant differences lie in phosphopeptide binding pocket. Additionally, fluorescence polarization assays demonstrate that MCPH1 tandem BRCT domains show a binding selectivity on pSer +3 and prefer to bind phosphopeptide with free COOH-terminus. Taken together, our research provides new structural insights into BRCT-phosphopeptide recognition mechanism.

Specific recognition of phosphorylated tail of H2AX by the tandem BRCT domains of MCPH1 revealed by complex structure.,Shao Z, Li F, Sy SM, Yan W, Zhang Z, Gong D, Wen B, Huen MS, Gong Q, Wu J, Shi Y J Struct Biol. 2011 Dec 1. PMID:22154951^[7]

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

References

↑ Jackson AP, Eastwood H, Bell SM, Adu J, Toomes C, Carr IM, Roberts E, Hampshire DJ, Crow YJ, Mighell AJ, Karbani G, Jafri H, Rashid Y, Mueller RF, Markham AF, Woods CG. Identification of microcephalin, a protein implicated in determining the size of the human brain. Am J Hum Genet. 2002 Jul;71(1):136-42. Epub 2002 Jun 3. PMID:12046007 doi:10.1086/341283
↑ Trimborn M, Bell SM, Felix C, Rashid Y, Jafri H, Griffiths PD, Neumann LM, Krebs A, Reis A, Sperling K, Neitzel H, Jackson AP. Mutations in microcephalin cause aberrant regulation of chromosome condensation. Am J Hum Genet. 2004 Aug;75(2):261-6. Epub 2004 Jun 15. PMID:15199523 doi:10.1086/422855
↑ Trimborn M, Richter R, Sternberg N, Gavvovidis I, Schindler D, Jackson AP, Prott EC, Sperling K, Gillessen-Kaesbach G, Neitzel H. The first missense alteration in the MCPH1 gene causes autosomal recessive microcephaly with an extremely mild cellular and clinical phenotype. Hum Mutat. 2005 Nov;26(5):496. PMID:16211557 doi:10.1002/humu.9382
↑ Jackson AP, Eastwood H, Bell SM, Adu J, Toomes C, Carr IM, Roberts E, Hampshire DJ, Crow YJ, Mighell AJ, Karbani G, Jafri H, Rashid Y, Mueller RF, Markham AF, Woods CG. Identification of microcephalin, a protein implicated in determining the size of the human brain. Am J Hum Genet. 2002 Jul;71(1):136-42. Epub 2002 Jun 3. PMID:12046007 doi:10.1086/341283
↑ Trimborn M, Bell SM, Felix C, Rashid Y, Jafri H, Griffiths PD, Neumann LM, Krebs A, Reis A, Sperling K, Neitzel H, Jackson AP. Mutations in microcephalin cause aberrant regulation of chromosome condensation. Am J Hum Genet. 2004 Aug;75(2):261-6. Epub 2004 Jun 15. PMID:15199523 doi:10.1086/422855
↑ Xu X, Lee J, Stern DF. Microcephalin is a DNA damage response protein involved in regulation of CHK1 and BRCA1. J Biol Chem. 2004 Aug 13;279(33):34091-4. Epub 2004 Jun 25. PMID:15220350 doi:10.1074/jbc.C400139200
↑ Shao Z, Li F, Sy SM, Yan W, Zhang Z, Gong D, Wen B, Huen MS, Gong Q, Wu J, Shi Y. Specific recognition of phosphorylated tail of H2AX by the tandem BRCT domains of MCPH1 revealed by complex structure. J Struct Biol. 2011 Dec 1. PMID:22154951 doi:10.1016/j.jsb.2011.11.022

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/3shv"

Categories: Homo sapiens | Large Structures | Li FD | Shao ZH | Yan W

@@ Line 3: / Line 3: @@
 <StructureSection load='3shv' size='340' side='right'caption='[[3shv]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[3shv]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3SHV OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3SHV FirstGlance]. <br>
+<table><tr><td colspan='2'>[[3shv]] is a 4 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=3SHV OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3SHV FirstGlance]. <br>
-</td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=SEP:PHOSPHOSERINE'>SEP</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]] 2.1&#8491;</td></tr>
-<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[3sht|3sht]]</div></td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SEP:PHOSPHOSERINE'>SEP</scene></td></tr>
-<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">MCPH1 ([https://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=3shv FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3shv OCA], [https://pdbe.org/3shv PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3shv RCSB], [https://www.ebi.ac.uk/pdbsum/3shv PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3shv ProSAT]</span></td></tr>
 </table>
 == Disease ==
-[[https://www.uniprot.org/uniprot/MCPH1_HUMAN MCPH1_HUMAN]] Premature chromosome condensation with microcephaly and intellectual deficit;Autosomal recessive primary microcephaly. Defects in MCPH1 are the cause of microcephaly primary type 1 (MCPH1) [MIM:[https://omim.org/entry/251200 251200]]; also known as true microcephaly or microcephaly vera. Microcephaly is defined as a head circumference more than 3 standard deviations below the age-related mean. Brain weight is markedly reduced and the cerebral cortex is disproportionately small. Despite this marked reduction in size, the gyral pattern is relatively well preserved, with no major abnormality in cortical architecture. Primary microcephaly is further defined by the absence of other syndromic features or significant neurological deficits. This entity is inherited as autosomal recessive trait.<ref>PMID:12046007</ref> <ref>PMID:15199523</ref> <ref>PMID:16211557</ref>
+[https://www.uniprot.org/uniprot/MCPH1_HUMAN MCPH1_HUMAN] Premature chromosome condensation with microcephaly and intellectual deficit;Autosomal recessive primary microcephaly. Defects in MCPH1 are the cause of microcephaly primary type 1 (MCPH1) [MIM:[https://omim.org/entry/251200 251200]; also known as true microcephaly or microcephaly vera. Microcephaly is defined as a head circumference more than 3 standard deviations below the age-related mean. Brain weight is markedly reduced and the cerebral cortex is disproportionately small. Despite this marked reduction in size, the gyral pattern is relatively well preserved, with no major abnormality in cortical architecture. Primary microcephaly is further defined by the absence of other syndromic features or significant neurological deficits. This entity is inherited as autosomal recessive trait.<ref>PMID:12046007</ref> <ref>PMID:15199523</ref> <ref>PMID:16211557</ref>
 == Function ==
-[[https://www.uniprot.org/uniprot/MCPH1_HUMAN MCPH1_HUMAN]] Implicated in chromosome condensation and DNA damage induced cellular responses. May play a role in neurogenesis and regulation of the size of the cerebral cortex.<ref>PMID:12046007</ref> <ref>PMID:15199523</ref> <ref>PMID:15220350</ref>  [[https://www.uniprot.org/uniprot/H2AX_HUMAN H2AX_HUMAN]] Variant histone H2A which replaces conventional H2A in a subset of nucleosomes. Nucleosomes wrap and compact DNA into chromatin, limiting DNA accessibility to the cellular machineries which require DNA as a template. Histones thereby play a central role in transcription regulation, DNA repair, DNA replication and chromosomal stability. DNA accessibility is regulated via a complex set of post-translational modifications of histones, also called histone code, and nucleosome remodeling. Required for checkpoint-mediated arrest of cell cycle progression in response to low doses of ionizing radiation and for efficient repair of DNA double strand breaks (DSBs) specifically when modified by C-terminal phosphorylation.<ref>PMID:10959836</ref> <ref>PMID:12419185</ref> <ref>PMID:12607005</ref> <ref>PMID:15201865</ref>
+[https://www.uniprot.org/uniprot/MCPH1_HUMAN MCPH1_HUMAN] Implicated in chromosome condensation and DNA damage induced cellular responses. May play a role in neurogenesis and regulation of the size of the cerebral cortex.<ref>PMID:12046007</ref> <ref>PMID:15199523</ref> <ref>PMID:15220350</ref>
 <div style="background-color:#fffaf0;">
 == Publication Abstract from PubMed ==
@@ Line 26: / Line 25: @@
 __TOC__
 </StructureSection>
-[[Category: Human]]
+[[Category: Homo sapiens]]
 [[Category: Large Structures]]
-[[Category: Li, F D]]
+[[Category: Li FD]]
-[[Category: Shao, Z H]]
+[[Category: Shao ZH]]
-[[Category: Yan, W]]
+[[Category: Yan W]]
-[[Category: Cell cycle]]
-[[Category: Tandem brct domains h2ax]]

3shv

From Proteopedia

Current revision

Crystal structure of human MCPH1 tandem BRCT domains-gamma H2AX complex

Structural highlights

Disease

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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