1xqh
From Proteopedia
Crystal structure of a ternary complex of the methyltransferase SET9 (also known as SET7/9) with a P53 peptide and SAH
Overview
p53 is a tumour suppressor that regulates the cellular response to genotoxic stresses. p53 is a short-lived protein and its activity is regulated mostly by stabilization via different post-translational modifications. Here we report a novel mechanism of p53 regulation through lysine methylation by Set9 methyltransferase. Set9 specifically methylates p53 at one residue within the carboxyl-terminus regulatory region. Methylated p53 is restricted to the nucleus and the modification positively affects its stability. Set9 regulates the expression of p53 target genes in a manner dependent on the p53-methylation site. The crystal structure of a ternary complex of Set9 with a p53 peptide and the cofactor product S-adenosyl-l-homocysteine (AdoHcy) provides the molecular basis for recognition of p53 by this lysine methyltransferase.
About this Structure
1XQH is a Protein complex structure of sequences from Homo sapiens. Full crystallographic information is available from OCA.
Reference
Regulation of p53 activity through lysine methylation., Chuikov S, Kurash JK, Wilson JR, Xiao B, Justin N, Ivanov GS, McKinney K, Tempst P, Prives C, Gamblin SJ, Barlev NA, Reinberg D, Nature. 2004 Nov 18;432(7015):353-60. Epub 2004 Nov 3. PMID:15525938 Page seeded by OCA on Sat May 3 15:22:26 2008
Categories: Histone-lysine N-methyltransferase | Homo sapiens | Protein complex | Barlev, N A. | Chuikov, S. | Gamblin, S J. | Ivanov, G S. | Justin, N. | Kurash, J K. | McKinney, K. | Prives, C. | Reinberg, D. | Tempst, P. | Wilson, J R. | Xiao, B. | Lysine methylation | Set-domain | Set9-p53 complex
