3s32

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Crystal structure of Ash2L N-terminal domain

Structural highlights

3s32 is a 1 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 2.45Å
Ligands:MSE, ZN
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

ASH2L_HUMAN Component of the Set1/Ash2 histone methyltransferase (HMT) complex, a complex that specifically methylates 'Lys-4' of histone H3, but not if the neighboring 'Lys-9' residue is already methylated. As part of the MLL1/MLL complex it is involved in methylation and dimethylation at 'Lys-4' of histone H3. May function as a transcriptional regulator. May play a role in hematopoiesis.[1] [2]

Publication Abstract from PubMed

Absent, small or homeotic discs-like 2 (ASH2L) is a trithorax group (TrxG) protein and a regulatory subunit of the SET1 family of lysine methyltransferases. Here we report that ASH2L binds DNA using a forkhead-like helix-wing-helix (HWH) domain. In vivo, the ASH2L HWH domain is required for binding to the beta-globin locus control region, histone H3 Lys4 (H3K4) trimethylation and maximal expression of the beta-globin gene (Hbb-1), validating the functional importance of the ASH2L DNA binding domain.

Crystal structure of the trithorax group protein ASH2L reveals a forkhead-like DNA binding domain.,Sarvan S, Avdic V, Tremblay V, Chaturvedi CP, Zhang P, Lanouette S, Blais A, Brunzelle JS, Brand M, Couture JF Nat Struct Mol Biol. 2011 Jun 5;18(7):857-9. doi: 10.1038/nsmb.2093. PMID:21642971[3]

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

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See Also

References

  1. ↑ Wysocka J, Myers MP, Laherty CD, Eisenman RN, Herr W. Human Sin3 deacetylase and trithorax-related Set1/Ash2 histone H3-K4 methyltransferase are tethered together selectively by the cell-proliferation factor HCF-1. Genes Dev. 2003 Apr 1;17(7):896-911. PMID:12670868 doi:10.1101/gad.252103
  2. ↑ Patel A, Dharmarajan V, Vought VE, Cosgrove MS. On the mechanism of multiple lysine methylation by the human mixed lineage leukemia protein-1 (MLL1) core complex. J Biol Chem. 2009 Sep 4;284(36):24242-56. Epub 2009 Jun 25. PMID:19556245 doi:M109.014498
  3. ↑ Sarvan S, Avdic V, Tremblay V, Chaturvedi CP, Zhang P, Lanouette S, Blais A, Brunzelle JS, Brand M, Couture JF. Crystal structure of the trithorax group protein ASH2L reveals a forkhead-like DNA binding domain. Nat Struct Mol Biol. 2011 Jun 5;18(7):857-9. doi: 10.1038/nsmb.2093. PMID:21642971 doi:10.1038/nsmb.2093

Contents


PDB ID 3s32

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