4C07: Crystal structure of M. musculus protein arginine methyltransferase PRMT6 with CaCl2 at 1.5 Angstroms

Citation:
Abstract
PRMT6 is a protein arginine methyltransferase involved in transcriptional regulation, human immunodeficiency virus pathogenesis, DNA base excision repair, and cell cycle progression. Like other PRMTs, PRMT6 is overexpressed in several cancer types and is therefore considered as a potential anti-cancer drug target. In the present study, we described six crystal structures of PRMT6 from Mus musculus, solved and refined at 1.34 A for the highest resolution structure. The crystal structures revealed that the folding of the helix alphaX is required to stabilize a productive active site before methylation of the bound peptide can occur. In the absence of cofactor, metal cations can be found in the catalytic pocket at the expected position of the guanidinium moiety of the target arginine substrate. Using mass spectrometry under native conditions, we show that PRMT6 dimer binds two cofactor and a single H4 peptide molecules. Finally, we characterized a new site of in vitro automethylation of mouse PRMT6 at position 7.
PDB ID: 4C07Download
MMDB ID: 121861
PDB Deposition Date: 2013/7/31
Updated in MMDB: 2015/08
Experimental Method:
x-ray diffraction
Resolution: 1.499  Å
Source Organism:
Similar Structures:
Biological Unit for 4C07: dimeric; determined by author and by software (PISA)
Molecular Components in 4C07
Label Count Molecule
Proteins (2 molecules)
2
Protein Arginine N-methyltransferase 6(Gene symbol: Prmt6)
Molecule annotation
Chemicals (12 molecules)
1
12
* Click molecule labels to explore molecular sequence information.

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