HHsearch alignment for GI: 254780781 and conserved domain: cd03354
>cd03354 LbH_SAT Serine acetyltransferase (SAT): SAT catalyzes the CoA-dependent acetylation of the side chain hydroxyl group of L-serine to form O-acetylserine, as the first step of a two-step biosynthetic pathway in bacteria and plants leading to the formation of L-cysteine. This reaction represents a key metabolic point of regulation for the cysteine biosynthetic pathway due to its feedback inhibition by cysteine. The enzyme is a 175 kDa homohexamer, composed of a dimer of homotrimers. Each subunit contains an N-terminal alpha helical region and a C-terminal left-handed beta-helix (LbH) subdomain with 5 turns, each containing a hexapeptide repeat motif characteristic of the acyltransferase superfamily of enzymes. The trimer interface mainly involves the C-terminal LbH subdomain while the dimer (of trimers) interface is mediated by the N-terminal alpha helical subdomain.
Probab=99.67 E-value=1.4e-16 Score=122.03 Aligned_cols=90 Identities=32% Similarity=0.437 Sum_probs=66.5
Q ss_pred CCCCCCCCCCCC--CCEECCEEEECCCCEEECCCEECCEECCCCCCCEEECCCCEEECCCEEECCEEECCCCEEEEEEEE
Q ss_conf 353367720156--612322047306868812321121005776564487258478218578468884588566300465
Q gi|254780781|r 137 GAYIGEGSMIDT--WSTVGSCAQIGKNVHISGGVGIGGVLEPIQTGPTIIEDNCFIGARSEIVEGCIIREGSVLGMGVFI 214 (285)
Q Consensus 137 GA~Ig~gt~I~~--~a~IG~~a~IG~~vhI~~g~~IGGvlep~~a~pviIeD~v~IGa~s~I~~Gv~Ig~gavIgaG~vi 214 (285)
T Consensus 8 ~~~IG~~~~I~~~~~v~Ig~~~~Ig~~~~I~~~~~ig~~~~~~~~~~~~Ig~~v~IG~~~~I~~gv~IG~~~vIgagsvV 87 (101)
T cd03354 8 GAKIGPGLFIDHGTGIVIGETAVIGDNCTIYQGVTLGGKGKGGGKRHPTIGDNVVIGAGAKILGNITIGDNVKIGANAVV 87 (101)
T ss_pred CCEECCCEEECCCCCEEECCCCEECCCCEECCCCEECCCCCCCCCCCCCCCCCEEECCCCEEECCCEECCCCEECCCCEE
T ss_conf 99999492991998779999989999989988878866311468777614875863589889298799998799879889
Q ss_pred CCCCEEEECCCCCEEEE
Q ss_conf 27833687158814644
Q gi|254780781|r 215 GKSTKIIDRNTGEITYG 231 (285)
Q Consensus 215 t~st~i~d~~~~~~~~g 231 (285)
T Consensus 88 ~~-----dv~~~si~~G 99 (101)
T cd03354 88 TK-----DVPANSTVVG 99 (101)
T ss_pred CC-----CCCCCCEEEE
T ss_conf 96-----8599989980