>cd03349 LbH_XAT Xenobiotic acyltransferase (XAT): The XAT class of hexapeptide acyltransferases is composed of a large number of microbial enzymes that catalyze the CoA-dependent acetylation of a variety of hydroxyl-bearing acceptors such as chloramphenicol and streptogramin, among others. Members of this class of enzymes include Enterococcus faecium streptogramin A acetyltransferase and Pseudomonas aeruginosa chloramphenicol acetyltransferase. They contain repeated copies of a six-residue hexapeptide repeat sequence motif (X-[STAV]-X-[LIV]-[GAED]-X) and adopt a left-handed parallel beta helix (LbH) structure. The active enzyme is a trimer with CoA and substrate binding sites at the interface of two separate LbH subunits. XATs are implicated in inactivating xenobiotics leading to xenobiotic resistance in patients.

Probab=98.41  E-value=1.2e-06  Score=44.24  Aligned_cols=35  Identities=20%  Similarity=0.317  Sum_probs=25.7

Q ss_pred             CCCCCCCCCCCCCCEEECCCEEECCCCEECCCEEE
Q ss_conf             11111112432201397498499888899698097
Q gi|254781223|r   75 GDAFVIGFTVISGNARVRGNAVVGGDTVVEGDTVL  109 (110)
Q Consensus        75 ~~~~i~~~~~I~~~~~I~~~~~I~~~~~I~~~~~i  109 (110)
T Consensus        72 ~~i~Ig~~vwIG~n~~Il~GV~IG~gavIgAgSvV  106 (145)
T cd03349          72 GDVIIGNDVWIGHGATILPGVTIGDGAVIAAGAVV  106 (145)
T ss_pred             CCEEECCCEEECCCCEEECCCEECCCCEEECCCEE
T ss_conf             99798899699998889588096788689289789