>TIGR02442 Cob-chelat-sub cobaltochelatase subunit; InterPro: IPR012804 Cobalamin (vitamin B12) can be complexed with metal via ATP-dependent reactions (aerobic pathway) (e.g., in Pseudomonas denitrificans) or via ATP-independent reactions (anaerobic pathway) (e.g., in Salmonella typhimurium) , . The corresponding cobalt chelatases are not homologous. Cobaltochelatase is responsible for the insertion of cobalt into the corrin ring of coenzyme B12 during its biosynthesis. Two versions have been well described. CbiK/CbiX is a monomeric, anaerobic version which acts early in the biosynthesis (IPR010388 from INTERPRO). CobNST is a trimeric, ATP-dependent, aerobic version which acts late in the biosynthesis, (IPR011953 from INTERPRO, IPR006537 from INTERPRO, IPR006538 from INTERPRO) . The two pathways differ in the point of cobalt insertion during corrin ring formation . There are apparently a number of variations on these two pathways, where the major differences seem to be concerned with the process of ring contraction . Cobaltochelatase shows similarities with magnesium chelatase, which is also a complex ATP-dependent enzyme made up of two separable components. However, unlike the situation in cobaltochelatase, one of these two components is membrane bound in magnesium chelatase . .

Probab=97.65 E-value=0.0054 Score=43.27 Aligned_cols=207 Identities=21% Similarity=0.350 Sum_probs=123.9 Q ss_pred CCCHHHHHHHHHHHHCCCCCCCEEEECCCCCCHHHHHHHHHHHH-----HCC---C----------------------CC Q ss_conf 33357899999996336777866895288740777999999987-----348---9----------------------98 Q gi|254780877|r 180 VIGRDDEMRRAIQVLSRRTKNNPVLIGDPGVGKTAIIEGLASRI-----ING---D----------------------IP 229 (853) Q Consensus 180 VIGRe~EI~~~~~iL~r~~k~n~~lvGe~GvGKtaive~la~~i-----~~~---~----------------------vp 229 (853) T Consensus 6 iVGQe~LK~ALLL~Av~P~iGGVLirG~KGTAKSTaaR~L~~LLP~i~~v~gC~f~cdP~~P~~~C~~C~~~~~~~G~~~ 85 (688) T TIGR02442 6 IVGQEDLKLALLLNAVNPRIGGVLIRGEKGTAKSTAARGLAALLPDIDVVAGCPFSCDPDDPEEWCEECRRKLEEQGTLP 85 (688) T ss_pred CCCHHHHHHHHHHEEECCCCCEEEEECCCCCHHHHHHHHHHHHCCHHHHHCCCCCCCCCCCCCCCCHHHHHHHHCCCCCC T ss_conf 21427986532100252663707887788862789888487616023664047888777887040067675552047753 Q ss_pred HHHCCCEEEEEEHHH---HHCCCCCCCHHHHHHH--------HHHHHHHHCCCCEEEEECCHHHHCCCCCCCCCCCHHHH Q ss_conf 444574378873135---4217454202454589--------99999860799769996362773026665543358888 Q gi|254780877|r 230 ESLKGKRLMALDMGA---LIAGAKFRGEFEERLK--------SLLCEIRSEDGEIILFIDELHVLVGAGKTDGAMDASNL 298 (853) Q Consensus 230 ~~l~~~~i~~ld~~~---l~ag~~~rg~~e~r~~--------~i~~~~~~~~~~~ilfide~h~~~gaG~~~g~~Daan~ 298 (853) T Consensus 86 ~~~~~~~~V~LPlgATEDRVvG~L---Di~~al~~G~~~FqPGLLA~A--hrG--iLYiDEVNLL-d-------DhlVD~ 150 (688) T TIGR02442 86 SEQRPVPFVNLPLGATEDRVVGSL---DIERALKEGEKAFQPGLLAEA--HRG--ILYIDEVNLL-D-------DHLVDV 150 (688) T ss_pred CCCCCCEEEECCCCCCHHHHCCHH---HHHHHHHHCHHHHCCCCHHHH--CCC--EEEEEEECCC-C-------CHHHHH T ss_conf 135873588658775233221305---489998718566078861754--687--1678520014-4-------147789 Q ss_pred HHHHHCCCCE---------------EEEEEECHHHHHHHHHCCHHHHHCCC-EEECCCCC-HHHHHHHHHHHHHHH---- Q ss_conf 7653124660---------------48997448999997300111320231-11115777-678999999978986---- Q gi|254780877|r 299 LKPSLARGEL---------------HCIGATTLDEYRKYIEKDPALARRFQ-SLLVGEPT-VTDTISILRGLKERY---- 357 (853) Q Consensus 299 LKP~LarG~l---------------~~IgaTT~~Eyrk~iEkD~Al~RRFq-~i~V~Eps-~~~t~~iL~gl~~~y---- 357 (853) T Consensus 151 lLDaaA~G~n~VEREG~S~~Hparf~L~GTMNPEEG----~LRPQLLDRFGL~V~v~~~~d~~~R~Ev~~Rrl-~~d~dP 225 (688) T TIGR02442 151 LLDAAAMGVNRVEREGLSVSHPARFVLIGTMNPEEG----DLRPQLLDRFGLCVDVAASRDPEERVEVIRRRL-AFDADP 225 (688) T ss_pred HHHHHHCCCEEEEECCCCHHCHHHHHHHCCCCCCHH----HHCHHHHHHHHCEEEECCCCCHHHHHHHHHHHH-HHCCCC T ss_conf 999876480067635743001145532203785221----102232424401155024358668999999997-540267 Q ss_pred HHH-CCCCCCHHHHHHHHHHHHHHCCCCCCHHHHHHHHHHHHHHHHHHHC Q ss_conf 541-4961015899999863332024576747789999999998754102 Q gi|254780877|r 358 EQH-HKVRISDSALVSAAVLSNRYITDRFLPDKAIDLMDEASARVRMQID 406 (853) Q Consensus 358 E~~-H~V~i~d~al~~av~ls~rYi~~r~lPDKAIDllDeA~A~~~i~~~ 406 (853) T Consensus 226 ~~F~~~~~~~~~~L~~~I~~AR~lLp~V~l~d~~~~~I~~lc~~~~V~Gh 275 (688) T TIGR02442 226 EAFAARWAAEQEELRERIAAARSLLPSVRLSDSLLRFISELCIEFGVDGH 275 (688) T ss_pred HHHHHHHHHHHHHHHHHHHHHHHHCCCCCCCHHHHHHHHHHHHHCCCCCC T ss_conf 78899999999999999999997547765888999999999997288852

HHsearch alignment for GI: 254780877 and conserved domain: TIGR02442