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GNAT family N-acetyltransferase
This family contains proteins with N-acetyltransferase functions such as Elp3-related proteins. [1]. 9175471. GCN5-related histone N-acetyltransferases belong to a diverse superfamily that includes the yeast SPT10 protein. Neuwald AF, Landsman D;. Trends Biochem Sci 1997;22:154-155. [2]. 11893502. A second catalytic domain in the Elp3 histone acetyltransferases: a candidate for histone demethylase activity?. Chinenov Y;. Trends Biochem Sci 2002;27:115-117. (from Pfam)
This domain catalyses N-acetyltransferase reactions. (from Pfam)
MarR family transcriptional regulator
The Mar proteins are involved in the multiple antibiotic resistance, a non-specific resistance system. The expression of the mar operon is controlled by a repressor, MarR. A large number of compounds induce transcription of the mar operon. This is thought to be due to the compound binding to MarR, and the resulting complex stops MarR binding to the DNA. With the MarR repression lost, transcription of the operon proceeds [1]. The structure of MarR is known [2] and shows MarR as a dimer with each subunit containing a winged-helix DNA binding motif. [1]. 9068629. The Salmonella typhimurium mar locus: molecular and genetic analyses and assessment of its role in virulence. Sulavik MC, Dazer M, Miller PF;. J Bacteriol 1997;179:1857-1866. [2]. 11473263. The crystal structure of MarR, a regulator of multiple antibiotic resistance, at 2.3 A resolution. Alekshun MN, Levy SB, Mealy TR, Seaton BA, Head JF;. Nat Struct Biol 2001;8:710-714. (from Pfam)
helix-turn-helix domain-containing GNAT family N-acetyltransferase
helix-turn-helix (HTH) domain-containing GNAT family N-acetyltransferase containing a MarR family HTH domain, binds DNA and may act as a transcriptional regulator, and may also catalyze the transfer of an acetyl group from acetyl-CoA to a substrate
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