>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=96.70  E-value=0.0011  Score=44.48  Aligned_cols=36  Identities=39%  Similarity=0.500  Sum_probs=30.3

Q ss_pred             CEEEECCCHHHHHHHHHHHHCCCCCEEEEEECCC-CCC
Q ss_conf             7799989768999999999808997399997867-789
Q gi|254781024|r   16 DVVIIGAGPAGLAAAIRCKQINPHLSVVILEKSA-EVG   52 (554)
Q Consensus        16 DVvIVGaGPAG~saA~~La~~g~~l~VlvlEK~~-~pG   52 (554)
T Consensus         1 DyiIIG~GSAGsvLa~RLsED~~-nsVlvLEaGgsDy~   37 (540)
T TIGR01810         1 DYIIIGAGSAGSVLATRLSEDVS-NSVLVLEAGGSDYR   37 (540)
T ss_pred             CEEEECCCCHHHHHCCCCCCCCC-CCEEEEECCCCCCC
T ss_conf             95886377146661300013587-66799824788876