HHsearch alignment for GI: 254780861 and conserved domain: cd01916

>cd01916 ACS_1 Acetyl-CoA synthase (ACS), also known as acetyl-CoA decarbonylase, is found in acetogenic and methanogenic organisms and is responsible for the synthesis and breakdown of acetyl-CoA. ACS forms a heterotetramer with carbon monoxide dehydrogenase (CODH) consisting of two ACS and two CODH subunits. CODH reduces carbon dioxide to carbon monoxide and ACS then synthesizes acetyl-CoA from carbon monoxide, CoA, and a methyl group donated by another protein (CoFeSP). ACS has three structural domains, an N-terminal rossman fold domain with a helical region at its N-terminus which interacts with CODH, and two alpha + beta fold domains. A Ni-Fe-S center referred to as the A-cluster is located in the C-terminal domain. A large cavity exists between the three domains which may bind CoA.
Probab=97.77  E-value=2.1e-06  Score=59.00  Aligned_cols=63  Identities=24%  Similarity=0.518  Sum_probs=38.2

Q ss_pred             CCCEECCCCHHHHHHCCCCCCCCCCCCCCCEEEEEEEEEHHHCCCCCCCHHHCCCCEEECCCCCCC
Q ss_conf             422134522325330883210122454473357788850555586887233378310303677356
Q gi|254780861|r   61 ERCIACKLCEAICPAQAITIESGPRCHDGTRRTVRYDIDMIKCIYCGLCQEACPVDAIVEGPNFEF  126 (163)
Q Consensus        61 ekCi~C~~C~~~CP~~aI~i~~~~~~~~~~~~~~~~~id~~~Ci~Cg~Cv~vCP~~AI~~~~~~e~  126 (163)
T Consensus       365 ~~Ct~C~~C~~~CPn~l~I~eam~~a~~gdls--~l~~l~d~CvgCgrCE~~C~k~-ipI~~~i~~  427 (731)
T cd01916         365 AKCTDCGWCTRACPNSLRIKEAMEAAKEGDFS--GLADLFDQCVGCGRCEQECPKE-IPIINMIEK  427 (731)
T ss_pred             HHCCCCCHHHHHCCCCCCHHHHHHHHHCCCCH--HHHHHHHHHHHHHHHHHHCCCC-CCHHHHHHH
T ss_conf             86532322665498868638899987607807--8899988620020187754468-855889999