>TIGR01810 betA choline dehydrogenase; InterPro: IPR011533 Choline dehydrogenase catalyzes the conversion of exogenously supplied choline into the intermediate glycine betaine aldehyde, as part of a two-step oxidative reaction leading to the formation of osmoprotectant betaine. This enzymatic system can be found in both Gram-positive and Gram-negative bacteria. As in Escherichia coli , Staphylococcus xylosus , and Sinorhizobium meliloti , this enzyme is found associated in a transcriptionally co-induced gene cluster with betaine aldehyde dehydrogenase, the second catalytic enzyme in this reaction. Other Gram-positive organisms have been shown to employ a different enzymatic system, utilising a soluble choline oxidase or type III alcohol dehydrogenase instead of choline dehydrogenase . This enzyme is a member of the GMC oxidoreductase family, sharing a common evolutionary origin and enzymatic reaction with alcohol dehydrogenase . Out grouping from this model, Caulobacter crescentus shares sequence homology with choline dehydrogenase, yet other genes participating in this enzymatic reaction have not currently been identified. ; GO: 0008812 choline dehydrogenase activity, 0019285 glycine betaine biosynthetic process from choline.

Probab=91.45  E-value=0.12  Score=30.88  Aligned_cols=30  Identities=37%  Similarity=0.423  Sum_probs=26.8

Q ss_pred             EEEEECCCHHHHHHHHHHHHCC-CEEEEEEC
Q ss_conf             2999979089999999999789-85999828
Q gi|254780842|r    5 DVIIIGSGLAGSVAAIGAAKKG-FLTALVSP   34 (384)
Q Consensus         5 DV~IvGaG~aGl~lA~~L~~~g-~~v~iiE~   34 (384)
T Consensus         1 DyiIIG~GSAGsvLa~RLsED~~nsVlvLEa   31 (540)
T TIGR01810         1 DYIIIGAGSAGSVLATRLSEDVSNSVLVLEA   31 (540)
T ss_pred             CEEEECCCCHHHHHCCCCCCCCCCCEEEEEC
T ss_conf             9588637714666130001358766799824