HHsearch alignment for GI: 254781223 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=99.04 E-value=2.1e-10 Score=59.86 Aligned_cols=83 Identities=8% Similarity=0.091 Sum_probs=39.8
Q ss_pred CCCCEEECCCEEEC--CCCEECCCCEECCCCCCCCCCCCCCCCCEEEEEEEECCCCCCCCCCCCCCCCCCCCCCCCCCCC
Q ss_conf 96876988970992--8839979815457543231122222221001135520221111222110112222211011111
Q gi|254781223|r 1 MYDNAVVRDCATVI--DDARVSGNASVSRFAQVKSNAEVSDNTYVRDNAKVGGYAKVSGNASVGGNAIVRDTAEVGGDAF 78 (110)
Q Consensus 1 i~~n~~I~~~a~I~--~~~~I~~n~~I~~~~~i~~~~~i~~~~~i~~~~~i~~~~~i~~~~~i~~~~~~~~~~~i~~~~~ 78 (110)
T Consensus 5 I~~~~~IG~~~~I~~~~~v~Ig~~~~Ig~~~~I~~~~~ig~~~~~~~----~~~~~Ig~~v~IG~~~~I~~gv~IG~~~v 80 (101)
T cd03354 5 IHPGAKIGPGLFIDHGTGIVIGETAVIGDNCTIYQGVTLGGKGKGGG----KRHPTIGDNVVIGAGAKILGNITIGDNVK 80 (101)
T ss_pred ECCCCEECCCEEECCCCCEEECCCCEECCCCEECCCCEECCCCCCCC----CCCCCCCCCEEECCCCEEECCCEECCCCE
T ss_conf 89999999492991998779999989999989988878866311468----77761487586358988929879999879
Q ss_pred CCCCCCCCC
Q ss_conf 111243220
Q gi|254781223|r 79 VIGFTVISG 87 (110)
Q Consensus 79 i~~~~~I~~ 87 (110)
T Consensus 81 IgagsvV~~ 89 (101)
T cd03354 81 IGANAVVTK 89 (101)
T ss_pred ECCCCEECC
T ss_conf 987988996