RPSBLAST alignment for GI: 254780889 and conserved domain: cd04585

>gnl|CDD|73085 cd04585, CBS_pair_ACT_assoc2, 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 = 122
 Score = 86.8 bits (215), Expect = 1e-17
 Identities = 48/122 (39%), Positives = 73/122 (59%), Gaps = 17/122 (13%)

Query: 101 NPVTISPYATLADALALMKKYSISGIPVVESDVGKLVGILTNRDVRFASN---------- 150
           NP+T++P  +L +AL LMK+ SI  +PVV+   GKLVGI+T+RD++ AS           
Sbjct: 2   NPITVTPDTSLMEALKLMKENSIRRLPVVDR--GKLVGIVTDRDLKLASPSKATTLDIWE 59

Query: 151 -----AQQAVGELMTRNLITVKKTVNLENAKALLHQHRIEKLLVVDDDGCCIGLITVKDI 205
                ++  V ++MTR+ ITV    ++E A  L+ + +I  L VVDD G  +G+IT  D+
Sbjct: 60  LYYLLSKIKVSDIMTRDPITVSPDASVEEAAELMLERKISGLPVVDDQGRLVGIITESDL 119

Query: 206 ER 207
            R
Sbjct: 120 FR 121