3P8D
Crystal structure of the second Tudor domain of human PHF20 (homodimer form)
Summary for 3P8D
Entry DOI | 10.2210/pdb3p8d/pdb |
Descriptor | Medulloblastoma antigen MU-MB-50.72 (2 entities in total) |
Functional Keywords | tudor domain, lysine-methylated p53 binding, histone binding, protein binding |
Biological source | Homo sapiens (human) |
Total number of polymer chains | 2 |
Total formula weight | 15179.16 |
Authors | Cui, G.,Lee, J.,Thompson, J.R.,Botuyan, M.V.,Mer, G. (deposition date: 2010-10-13, release date: 2011-06-22, Last modification date: 2024-10-16) |
Primary citation | Cui, G.,Park, S.,Badeaux, A.I.,Kim, D.,Lee, J.,Thompson, J.R.,Yan, F.,Kaneko, S.,Yuan, Z.,Botuyan, M.V.,Bedford, M.T.,Cheng, J.Q.,Mer, G. PHF20 is an effector protein of p53 double lysine methylation that stabilizes and activates p53. Nat.Struct.Mol.Biol., 19:916-924, 2012 Cited by PubMed Abstract: PHF20 is a multidomain protein and subunit of a lysine acetyltransferase complex that acetylates histone H4 and p53 but whose function is unclear. Using biochemical, biophysical and cellular approaches, we determined that PHF20 is a direct regulator of p53. A Tudor domain in PHF20 recognized p53 dimethylated at Lys370 or Lys382 and a homodimeric form of this Tudor domain could associate with the two dimethylated sites on p53 with enhanced affinity, indicating a multivalent interaction. Association with PHF20 promotes stabilization and activation of p53 by diminishing Mdm2-mediated p53 ubiquitylation and degradation. PHF20 contributes to upregulation of p53 in response to DNA damage, and ectopic expression of PHF20 in different cell lines leads to phenotypic changes that are hallmarks of p53 activation. Overall our work establishes that PHF20 functions as an effector of p53 methylation that stabilizes and activates p53. PubMed: 22864287DOI: 10.1038/nsmb.2353 PDB entries with the same primary citation |
Experimental method | X-RAY DIFFRACTION (2 Å) |
Structure validation
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