Abstract:
:Evolutionary conserved SET domains were originally identified in three Drosophila proteins: suppressor of variegation (Su (var) 3-9), enhancer of zeste (E(z)), and the trithorax. Some of the SET-domain containing proteins have been known to elicit methylation of histone lysine residues. Based on a search for SET-domain containing proteins using bioinformatic tools, we identified and subsequently named a novel SET domain as WHISTLE, that has histone methyltransferase (HMTase) activity. To characterize WHISTLE, we performed an HMTase assay, mass spectrometric analysis, lysine specificity, and transfection assays. Mass spectrometric and immunoblot analysis revealed that WHISTLE di-methylates H3K4 and di-, and tri-methylates H3K27 of histones. Overexpression of WHISTLE repressed transcription of the SV40 promoter. Our results suggest that WHISTLE is a novel SET domain containing a protein with specific H3K4 and H3K27 HMTase activity.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Kim SM,Kee HJ,Eom GH,Choe NW,Kim JY,Kim YS,Kim SK,Kook H,Kook H,Seo SBdoi
10.1016/j.bbrc.2006.04.095subject
Has Abstractpub_date
2006-06-23 00:00:00pages
318-23issue
1eissn
0006-291Xissn
1090-2104pii
S0006-291X(06)00939-9journal_volume
345pub_type
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