>TIGR01575 rimI ribosomal-protein-alanine acetyltransferase; InterPro: IPR006464 Histone acetylation is carried out by a class of enzymes known as histone acetyltransferases (HATs), which catalyse the transfer of an acetyl group from acetyl-CoA to the lysine E-amino groups on the N-terminal tails of histones. Early indication that HATs were involved in transcription came from the observation that in actively transcribed regions of chromatin, histones tend to be hyperacetylated, whereas in transcriptionally silent regions histones are hypoacetylated. The histone acetyltransferases are divided into five families. These include the Gcn5-related acetyltransferases (GNATs); the MYST (for 'MOZ, Ybf2/Sas3, Sas2 and Tip60)-related HATs; p300/CBP HATs; the general transcription factor HATs, which include the TFIID subunit TAF250; and the nuclear hormone-related HATs SRC1 and ACTR (SRC3). The GCN5-related N-acetyltransferase superfamily includes such enzymes as the histone acetyltransferases GCN5 and Hat1, the elongator complex subunit Elp3, the mediator-complex subunit Nut1, and Hpa2 . Many GNATs share several functional domains, including an N-terminal region of variable length, an acetyltransferase domain that encompasses the conserved sequence motifs described above, a region that interacts with the coactivator Ada2, and a C-terminal bromodomain that is believed to interact with acetyl-lysine residues. Members of the GNAT family are important for the regulation of cell growth and development. In mice, knockouts of Gcn5L are embryonic lethal. Yeast Gcn5 is needed for normal progression through the G2M boundary and mitotic gene expression. The importance of GNATs is probably related to their role in transcription and DNA repair. Members of this entry belong to the GCN5-related N-acetyltransferase (GNAT) superfamily. This entry covers prokaryotes and the archaea. It contains rimI, which catalyses the acetylation of the N-terminal alanine of ribosomal protein S18 .; GO: 0016407 acetyltransferase activity, 0006474 N-terminal protein amino acid acetylation.

Probab=99.73  E-value=5.6e-17  Score=122.56  Aligned_cols=133  Identities=20%  Similarity=0.187  Sum_probs=94.0

Q ss_pred             HHHHHHHHHHHHCCCCCCCCCCCEEHHHHHCHHCCCCCCCEEEEEEEECCEEEEEEEEEEEEECCCCEEEEEEEEECHHH
Q ss_conf             78999999999727876667561520254120002576654899998987864799999988606784899867752546
Q gi|254780989|r   23 DQVAVDEVMVKAFLSTQEITDDVLHKYVRNNVEEPLSFVRLMSFVCRDGDRIVGAIRATPIQIGKYKGFLRGPLGVLSEY  102 (185)
Q Consensus        23 D~~aI~~L~~~aF~~~~~~~~~~~~~~~~~~~~~~~~~~~~l~~Vae~d~~iVG~i~~~~~~~~~~~~~~l~~laV~P~~  102 (185)
T Consensus         1 d~~~v~~ie~~af~~~~PW~~~----~f~~~l~i---~~~~~yl~a~~g~~~~Gy~~~~r~~~~~~~Ea~i~~iaV~pe~   73 (140)
T TIGR01575         1 DLKAVLEIEKAAFTVDSPWTEA----AFAEELAI---NYYTCYLLAEIGGKVVGYIGISRIVQIVLDEAHILNIAVKPEY   73 (140)
T ss_pred             CHHHHHHHHHHHHCCCCCCCHH----HHHHHHCC---CCCCEEEEEEECCEEEEEEEEEEEEEEECCCCEEEEEEECCCC
T ss_conf             9479999989871699998878----98865101---3330144566287789877656788754377448999887120


Q ss_pred             HCCCHHHHHHHHHHHHHHHCCCCEEEEECCHH------HHHHCCCEEHHHCCCCCCCCC-CCHHHEE
Q ss_conf             15998999999999999988997999950832------543138587052782677988-8823226
Q gi|254780989|r  103 RKRGIGSRLAYMSFMAIKNSGAEFVLIDAKHD------WHKHLGFKKPHQHQIRYAHGG-GAATDWL  162 (185)
Q Consensus       103 qg~GiG~~Li~~~l~~a~~~G~~~v~l~~~~~------~Y~r~GF~~~~~~~i~~~~~~-~~~~~~~  162 (185)
T Consensus        74 Qg~GiG~~LL~~L~~~~~~~~~~~~~LEVR~SN~~A~~LY~k~GF~~~~~r~~YY~~~~GrEDA~~M  140 (140)
T TIGR01575        74 QGQGIGRALLRELIKEAKGRGVNEIFLEVRVSNVAAQALYKKLGFNEIAIRKNYYPDPEGREDAIVM  140 (140)
T ss_pred             CCCCHHHHHHHHHHHHHHCCCCEEEEEEECCHHHHHHHHHHHHCCEEECCCCCCCCCCCCCCCCCCC
T ss_conf             1663788999999999851898389984614068999987771850101043568887962223039