>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=99.61  E-value=8.6e-15  Score=106.48  Aligned_cols=129  Identities=26%  Similarity=0.404  Sum_probs=94.5

Q ss_pred             HHHHHHHHHHHCCCCC-CCCEEEEEECCCCCCCCEEEEEEECCEEEEEEEEEEE-EECCCCEEEEEEEEECCCCCCCCHH
Q ss_conf             8999999998538987-2100131103888876078999988989999998776-1188223899767885111389958
Q gi|254781162|r   41 DSSICAMHADSFGPGR-FVRAAVLLREQGMHDLSLSFLCAEGKRIVGSVRMTPI-SIEKITGHLLGPIVVHPLYQNKGIG  118 (192)
Q Consensus        41 ~~di~ai~~~~fgpgr-~~~~~~~lR~~~~~~~~lslVA~~~~~IVG~i~~~pv-~~~~~~~~~LgplaV~P~~rg~GiG  118 (192)
T Consensus         2 ~~~v~~ie~~af~~~~PW~~~~f~~~l~i~~~~~y-l~a~~g~~~~Gy~~~~r~~~~~~~Ea~i~~-iaV~pe~Qg~GiG   79 (140)
T TIGR01575         2 LKAVLEIEKAAFTVDSPWTEAAFAEELAINYYTCY-LLAEIGGKVVGYIGISRIVQIVLDEAHILN-IAVKPEYQGQGIG   79 (140)
T ss_pred             HHHHHHHHHHHHCCCCCCCHHHHHHHHCCCCCCEE-EEEEECCEEEEEEEEEEEEEEECCCCEEEE-EEECCCCCCCCHH
T ss_conf             47999998987169999887898865101333014-456628778987765678875437744899-9887120166378


Q ss_pred             HHHHHHHHHHHHHCCCCEEEEE---E---CHHHHHHCCCEECCCCCEECCCCC--CHHHEE
Q ss_conf             9999999999961388479984---0---865787429487463653668999--956669
Q gi|254781162|r  119 RKLISMSVDAAEKKGSQVIVLV---G---DIAYYSKLGFQAVPWKSLILPAPV--DPNRVL  171 (192)
Q Consensus       119 ~~Li~~~l~~a~~~g~~~v~l~---g---~~~yY~rfGF~~~~~~~l~~p~pv--~~~~~l  171 (192)
T Consensus        80 ~~LL~~L~~~~~~~~~~~~~LEVR~SN~~A~~LY~k~GF~~~~~r~~YY~~~~GrEDA~~M  140 (140)
T TIGR01575        80 RALLRELIKEAKGRGVNEIFLEVRVSNVAAQALYKKLGFNEIAIRKNYYPDPEGREDAIVM  140 (140)
T ss_pred             HHHHHHHHHHHHCCCCEEEEEEECCHHHHHHHHHHHHCCEEECCCCCCCCCCCCCCCCCCC
T ss_conf             8999999999851898389984614068999987771850101043568887962223039