RPSBLAST alignment for GI: 254780889 and conserved domain: cd04584

>gnl|CDD|73084 cd04584, CBS_pair_ACT_assoc, This cd contains two tandem repeats of the cystathionine beta-synthase (CBS pair) domains in the acetoin utilization proteins in bacteria. Acetoin is a product of fermentative metabolism in many prokaryotic and eukaryotic microorganisms. They produce acetoin as an external carbon storage compound and then later reuse it as a carbon and energy source during their stationary phase and sporulation. In addition these CBS domains are associated with a downstream ACT domain, which is linked to a wide range of metabolic enzymes that are regulated by amino acid concentration. Pairs of ACT domains bind specifically to a particular amino acid leading to regulation of the linked enzyme. CBS is a small domain originally identified in cystathionine beta-synthase and subsequently found in a wide range of different proteins. CBS domains usually come in tandem repeats, which associate to form a so-called Bateman domain or a CBS pair which is reflected in this model. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains. It has been proposed that the CBS domain may play a regulatory role, although its exact function is unknown.. Length = 121
 Score = 44.4 bits (105), Expect = 7e-05
 Identities = 15/47 (31%), Positives = 30/47 (63%)

Query: 161 RNLITVKKTVNLENAKALLHQHRIEKLLVVDDDGCCIGLITVKDIER 207
           R+++T+  T  +  A  L+ +H+I  L VVD++G  +G++T +D+  
Sbjct: 1   RDVVTITPTTTIAEALELMREHKIRHLPVVDEEGRLVGIVTDRDLRD 47