>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=99.73 E-value=2.3e-17 Score=125.70 Aligned_cols=215 Identities=25% Similarity=0.306 Sum_probs=149.5 Q ss_pred HHHHCCHHHHHHHHHHHHHHHHHCCCCCCCEEEECCCCCCHHHHHHHHHHHC-------CCCCCC--------------- Q ss_conf 7782397999999999999866146776707997378855778999999861-------898531--------------- Q gi|254780552|r 27 LEEFTGQVEACSNLKVFIEAAKARAEALDHVLFVGPPGLGKTTLAQVVAREL-------GVNFRS--------------- 84 (334) Q Consensus 27 l~dviGQ~~~~~~l~~~i~a~~~~~~~~~h~Lf~GPpG~GKTtlA~iiA~~l-------~~~~~~--------------- 84 (334) T Consensus 3 F~AiVGQe~LK~ALL--L~Av~---P~iGGVLirG~KGTAKSTaaR~L~~LLP~i~~v~gC~f~cdP~~P~~~C~~C~~~ 77 (688) T TIGR02442 3 FTAIVGQEDLKLALL--LNAVN---PRIGGVLIRGEKGTAKSTAARGLAALLPDIDVVAGCPFSCDPDDPEEWCEECRRK 77 (688) T ss_pred CCCCCCHHHHHHHHH--HEEEC---CCCCEEEEECCCCCHHHHHHHHHHHHCCHHHHHCCCCCCCCCCCCCCCCHHHHHH T ss_conf 742214279865321--00252---6637078877888627898884876160236640478887778870400676755 Q ss_pred CC--CC---------CC--------CC---HHHHHH------------HHHHHHCCCHHHHHHHHHCCHHHHHHHHHHHH Q ss_conf 25--76---------44--------33---467666------------66641016378887576169899999999863 Q gi|254780552|r 85 TS--GP---------VI--------AK---AGDLAA------------LLTNLEDRDVLFIDEIHRLSIIVEEILYPAME 130 (334) Q Consensus 85 ~s--~~---------~~--------~~---~~dl~~------------~~~~~~~~~vlfiDEihrl~~~~q~~Ll~~mE 130 (334) T Consensus 78 ~~~~G~~~~~~~~~~~V~LPlgATEDRVvG~LDi~~al~~G~~~FqPGLLA~Ah-rGiLYiDEVNLLdDhlVD~lLDaaA 156 (688) T TIGR02442 78 LEEQGTLPSEQRPVPFVNLPLGATEDRVVGSLDIERALKEGEKAFQPGLLAEAH-RGILYIDEVNLLDDHLVDVLLDAAA 156 (688) T ss_pred HHCCCCCCCCCCCCEEEECCCCCCHHHHCCHHHHHHHHHHCHHHHCCCCHHHHC-CCEEEEEEECCCCCHHHHHHHHHHH T ss_conf 520477531358735886587752332213054899987185660788617546-8716785200144147789999876 Q ss_pred CCCCCCCCCCCCCCCEEECCCCCCEEEECCC-CCCCCCHHHHHCCCCEEECCC-CCHHHHHHHHHHHHHH---------- Q ss_conf 4751002567876520004667400552045-543355454420120673264-5479999987776541---------- Q gi|254780552|r 131 DFQLDLMVGEGPSARSVKINLSRFTLIAATT-RVGLLTNPLQDRFGIPIRLNF-YEIEDLKTIVQRGAKL---------- 198 (334) Q Consensus 131 ~~~i~i~~~~~~~a~~~~~~~~~f~lI~ATt-~~~~l~~~l~sR~~~~~~~~~-~~~~el~~il~~~~~~---------- 198 (334) T Consensus 157 ~G~n~VER-EG~---S~~-Hparf~L~GTMNPEEG~LRPQLLDRFGL~V~v~~~~d~~~R~Ev~~Rrl~~d~dP~~F~~~ 231 (688) T TIGR02442 157 MGVNRVER-EGL---SVS-HPARFVLIGTMNPEEGDLRPQLLDRFGLCVDVAASRDPEERVEVIRRRLAFDADPEAFAAR 231 (688) T ss_pred CCCEEEEE-CCC---CHH-CHHHHHHHCCCCCCHHHHCHHHHHHHHCEEEECCCCCHHHHHHHHHHHHHHCCCCHHHHHH T ss_conf 48006763-574---300-1145532203785221102232424401155024358668999999997540267788999 Q ss_pred -------------------CCCHHHHHHHHHHHCCCC----CCHHHHHHHHHHHHHHHHHHCCCCCCHHHHHHHHHH Q ss_conf -------------------210111111123320221----015678877754333455415886427787876542 Q gi|254780552|r 199 -------------------TGLAVTDEAACEIAMRSR----GTPRIAGRLLRRVRDFAEVAHAKTITREIADAALLR 252 (334) Q Consensus 199 -------------------~~i~~~~~al~~ia~~s~----Gd~R~AlnlLe~v~d~a~~~~~~~i~~~~~~~~l~~ 252 (334) T Consensus 232 ~~~~~~~L~~~I~~AR~lLp~V~l~d~~~~~I~~lc~~~~V~GhRAdi~~~raArAlAAl~GR~~V~~eDv~~Aa~L 308 (688) T TIGR02442 232 WAAEQEELRERIAAARSLLPSVRLSDSLLRFISELCIEFGVDGHRADIVMARAARALAALDGRRRVTAEDVREAAEL 308 (688) T ss_pred HHHHHHHHHHHHHHHHHHCCCCCCCHHHHHHHHHHHHHCCCCCCHHHHHHHHHHHHHHHHCCCCEECHHHHHHHHHH T ss_conf 99999999999999997547765888999999999997288852599999999999987728853537789999987

HHsearch alignment for GI: 254780552 and conserved domain: TIGR02442