>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=91.22  E-value=0.14  Score=30.05  Aligned_cols=27  Identities=30%  Similarity=0.615  Sum_probs=22.4

Q ss_pred             CCCCCCCCHHHHCCCCCCHHHHHHHHH
Q ss_conf             767664734551899788899999999
Q gi|254781044|r  225 YRCHTIMNCTQSCPKGLNPAKAIAKIK  251 (259)
Q Consensus       225 ~~C~~C~~C~~vCPkgI~~~~~I~~LR  251 (259)
T Consensus       365 ~~Ct~C~~C~~~CPn~l~I~eam~~a~  391 (731)
T cd01916         365 AKCTDCGWCTRACPNSLRIKEAMEAAK  391 (731)
T ss_pred             HHCCCCCHHHHHCCCCCCHHHHHHHHH
T ss_conf             865323226654988686388999876