>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=94.38 E-value=0.033 Score=35.09 Aligned_cols=157 Identities=16% Similarity=0.223 Sum_probs=78.0 Q ss_pred CCCCCCCCCCCCCCCCCCCCCEEEECCCCCCCCE-EEEECCC-C-----CCCCCCEECCCC--EEEE---CCCC----CC Q ss_conf 2122222222222332332200011024457610-2431275-3-----222210000152--2200---1268----41 Q gi|254781055|r 210 DIRQGLTDVMISRGMQVFHNDTIESVVSESGQLK-SILKSGK-I-----VKTDQVILAVGR--TPRT---TGIG----LE 273 (461) Q Consensus 210 ~~~~~~~~~l~~~Gv~i~~~~~v~~i~~~~~~~~-~~~~~g~-~-----~~~D~vl~a~Gr--~Pn~---~~l~----L~ 273 (461) T Consensus 200 aaraYL~pA~kRpNle~~t~af~~ki~feg~ratGVe~~~ggst~~e~~~ankEVilsagainSPqlL~lSGiG~aehL~ 279 (540) T TIGR01810 200 AARAYLDPALKRPNLEVRTRAFVDKIVFEGKRATGVEFKKGGSTIKERVKANKEVILSAGAINSPQLLQLSGIGDAEHLK 279 (540) T ss_pred HHHHHHHHHHCCCCHHHHHHHHHEEEEECCCEEEEEEEECCCCCCCCEECCCCEEEEECCHHHHHHHHHHCCCCCHHHHH T ss_conf 44666446640787200142222000330883799888228973300001244578833412135899762897179998 Q ss_pred CCCCCCCCCCCCCCCCCCCCCEEEEEEECCCCCCCCCCCH--HHCCCCCCHHHHCCCC--------------CCCCCCCC Q ss_conf 1232112354334457430000355871254326431000--0001111012205887--------------54332333 Q gi|254781055|r 274 KVGVKMDENGFIITDCYSRTNVQSIFSLGDISGHIQLTPV--AIHAAACFVETVFKDN--------------PTIPDYDL 337 (461) Q Consensus 274 ~~gi~~~~~G~i~vd~~~~Ts~~~IyA~GDv~g~~~l~~~--A~~~g~~aa~~i~~~~--------------~~~~~~~~ 337 (461) T Consensus 280 e~gI~~~~~-lPGVGeNl~D-HlE~Y~Q~~ck~PVSlyp~L~w~~~p~iGaqWlfg~~G~gaSNhFE~ggF~RS~~~v~- 356 (540) T TIGR01810 280 ELGIELKVE-LPGVGENLQD-HLEVYLQYACKKPVSLYPALNWLKQPVIGAQWLFGKKGVGASNHFEAGGFVRSADDVK- 356 (540) T ss_pred HCCCCEEEC-CCCCCCCHHH-HHHHHHHHHCCCCEECCCHHHHHCCCCCCHHHHCCCCCCEEEECCCCCCEEECCCCCC- T ss_conf 558960652-7878763343-5642322422887435602565438722101110476520440202431101466788- Q ss_pred CCCCEEEHHHHH--HHCCCHHHHHHCCCCEEEEEEE Q ss_conf 333123068875--5168988998549947999983 Q gi|254781055|r 338 VPTAVFSKPEIA--SVGLTEEEAVQKFCRLEIYKTK 371 (461) Q Consensus 338 ip~~ift~peiA--~VG~te~~a~~~~~~~~v~~~~ 371 (461) T Consensus 357 ~Pni~yHFLPvAi~YdG--~~A~k~HGfQvHVG~~~ 390 (540) T TIGR01810 357 YPNIQYHFLPVAIRYDG--KKAAKEHGFQVHVGSML 390 (540) T ss_pred CCCCEEECCCEEEECCC--HHHHHCCCCEEEECCCC T ss_conf 88520101436872274--35666079758877777

HHsearch alignment for GI: 254781055 and conserved domain: TIGR01810