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6sqh

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Crystal structure of mouse PRMT6 with partial C-terminal TEV cleavage site

Structural highlights

6sqh is a 2 chain structure with sequence from Mus musculus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 2.39Å
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

ANM6_MOUSE Arginine methyltransferase that can catalyze the formation of both omega-N monomethylarginine (MMA) and asymmetrical dimethylarginine (aDMA), with a strong preference for the formation of aDMA. Preferentially methylates arginyl residues present in a glycine and arginine-rich domain and displays preference for monomethylated substrates. Specifically mediates the asymmetric dimethylation of histone H3 'Arg-2' to form H3R2me2a. H3R2me2a represents a specific tag for epigenetic transcriptional repression and is mutually exclusive with methylation on histone H3 'Lys-4' (H3K4me2 and H3K4me3). Acts as a transcriptional repressor of various genes such as HOXA2, THBS1 and TP53. Repression of TP53 blocks cellular senescence. Also methylates histone H2A and H4 'Arg-3' (H2AR3me and H4R3me, respectively). Acts as a regulator of DNA base excision during DNA repair by mediating the methylation of DNA polymerase beta (POLB), leading to the stimulation of its polymerase activity by enhancing DNA binding and processivity. Methylates HMGA1. Regulates alternative splicing events. Acts as a transcriptional coactivator of a number of steroid hormone receptors including ESR1, ESR2, PGR and NR3C1. Promotes fasting-induced transcriptional activation of the gluconeogenic program through methylation of the CRTC2 transcription coactivator.^[1] ^[2]

References

↑ Neault M, Mallette FA, Vogel G, Michaud-Levesque J, Richard S. Ablation of PRMT6 reveals a role as a negative transcriptional regulator of the p53 tumor suppressor. Nucleic Acids Res. 2012 Oct;40(19):9513-21. doi: 10.1093/nar/gks764. Epub 2012, Aug 16. PMID:22904064 doi:http://dx.doi.org/10.1093/nar/gks764
↑ Han HS, Jung CY, Yoon YS, Choi S, Choi D, Kang G, Park KG, Kim ST, Koo SH. Arginine methylation of CRTC2 is critical in the transcriptional control of hepatic glucose metabolism. Sci Signal. 2014 Feb 25;7(314):ra19. doi: 10.1126/scisignal.2004479. PMID:24570487 doi:http://dx.doi.org/10.1126/scisignal.2004479