>TIGR02485 CobZ_N-term precorrin 3B synthase CobZ; InterPro: IPR012831 Cobalamin (vitamin B12) is a structurally complex cofactor, consisting of a modified tetrapyrrole with a centrally chelated cobalt. Cobalamin is usually found in one of two biologically active forms: methylcobalamin and adocobalamin. Most prokaryotes, as well as animals, have cobalamin-dependent enzymes, whereas plants and fungi do not appear to use it. In bacteria and archaea, these include methionine synthase, ribonucleotide reductase, glutamate and methylmalonyl-CoA mutases, ethanolamine ammonia lyase, and diol dehydratase . In mammals, cobalamin is obtained through the diet, and is required for methionine synthase and methylmalonyl-CoA mutase . There are at least two distinct cobalamin biosynthetic pathways in bacteria : Aerobic pathway that requires oxygen and in which cobalt is inserted late in the pathway ; found in Pseudomonas denitrificans and Rhodobacter capsulatus. Anaerobic pathway in which cobalt insertion is the first committed step towards cobalamin synthesis ; found in Salmonella typhimurium, Bacillus megaterium, and Propionibacterium freudenreichii shermanii. Either pathway can be divided into two parts: (1) corrin ring synthesis (differs in aerobic and anaerobic pathways) and (2) adenosylation of corrin ring, attachment of aminopropanol arm, and assembly of the nucleotide loop (common to both pathways) . There are about 30 enzymes involved in either pathway, where those involved in the aerobic pathway are prefixed Cob and those of the anaerobic pathway Cbi. Several of these enzymes are pathway-specific: CbiD, CbiG, and CbiK are specific to the anaerobic route of S. typhimurium, whereas CobE, CobF, CobG, CobN, CobS, CobT, and CobW are unique to the aerobic pathway of P. denitrificans. This entry represents CobZ, which is essential for cobalamin biosynthesis and is complemented by precorrin 3B synthase CobG (1.3.99.1 from EC). The enzyme has been shown to contain flavin, haem and Fe-S cluster cofactors, and is believed to require dioxygen as a substrate. In Rhodobacter capsulatus, CobZ is found as a N-terminal domain, whereas in other species it exists as a separate protein. The C-terminal portion is homologous to the 2-component signal transduction system protein CitB (IPR012830 from INTERPRO)..

Probab=96.82 E-value=0.0013 Score=45.28 Aligned_cols=369 Identities=18% Similarity=0.167 Sum_probs=175.5 Q ss_pred CCEEEECCCHHHHHHHHHHHHCCCCEEEEECCHHH-----------C---------------------CCCCCCCCCCCC Q ss_conf 57889889426899999998589989999807626-----------0---------------------124667002211 Q gi|254780808|r 6 YDVIVIGGGHAGCEAAAVAAKLGASTALITHKTST-----------I---------------------GSMSCNPAIGGL 53 (626) Q Consensus 6 ~dViVIGaG~AG~EAA~~~Ar~G~~v~L~~~~~~~-----------~---------------------ael~Cnps~gg~ 53 (626) T Consensus 2 V~VLvIGgG~AgLCAAi~ArraGAsVllLeaAPr~~rGGNarHgRN~R~~hd~p~d~~~D~YpaEEf~~dL~--~vtgg~ 79 (467) T TIGR02485 2 VDVLVIGGGLAGLCAAIEARRAGASVLLLEAAPRDLRGGNARHGRNLRVAHDIPLDFLRDAYPAEEFRRDLL--KVTGGR 79 (467) T ss_pred CEEEEECCCHHHHHHHHHHHHCCCEEEEECCCCCCCCCCCCCCCCCCEEECCCCCCCCCCCCCHHHHHHHHH--HHCCCC T ss_conf 237887642588999999863796798402478532578653334511101578886457873789998754--312787 Q ss_pred CHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCCCCCCCCHHHHHHHHHHH----HHHHHHHHCC---CCCEEE-HHHHC Q ss_conf 224899999863039999998863148873078785553467878499999----9999999708---996898-00101 Q gi|254780808|r 54 GKGHLVREIDALDGLMGRVADAAGIQFRVLNVKKGPAVRGPRTQADRELYR----LAMQREILSQ---ENLDVI-QGEVA 125 (626) Q Consensus 54 akg~L~~Ei~aLgg~m~~~aD~~~i~~r~ln~skGpAv~alraqvDR~~fs----~~vt~~l~~~---pni~i~-~~eV~ 125 (626) T Consensus 80 t~~~l~~L~i~r~s~~~~w~~~~GVhl~P------~~aG~lpy-sRrtaF~~GGGkAl~NAly~sAerLGv~Iry~~~V~ 152 (467) T TIGR02485 80 TDERLARLLIERASSILRWLIAHGVHLQP------AAAGVLPY-SRRTAFLLGGGKALVNALYASAERLGVEIRYDAEVE 152 (467) T ss_pred CCHHHHHHHHHHCCHHHHHHHHCCCEECC------CCCCCCCH-HHCCCCCCCCHHHHHHHHHHHHHHCCEEEECCCCCC T ss_conf 41157899887200236899967943366------32565760-111112357618999999998855572541477300 Q ss_pred CCCC--CCCCEEEEEE--CCCCCCCCCCCCCCCCCCCHHHHHHHHCCCCCCCCCCCCCC-------------CCCCHHH- Q ss_conf 1202--5881132220--35863344543334664310134443202332224751113-------------3100001- Q gi|254780808|r 126 GFNT--EKNIISSIVM--QDNSMIRCSTVVLTTGTFLRGVIHIGKLKIPAGRMGDSPSN-------------SLFNSFM- 187 (626) Q Consensus 126 ~l~~--~~~~~~~v~~--~~g~~~~~~~viiatGtfl~g~~~~g~~~~~~gr~~~~~s~-------------~ls~~l~- 187 (626) T Consensus 153 ri~~~~~g~~~i~~~~v~~~~~rI~t~a~VlaaGG~ganr~WLr~~~G~~a~-geWPadn~~~RGTpy~~G~LL~~ll~d 231 (467) T TIGR02485 153 RIEREEDGRAFIAARLVAAADERIATKAVVLAAGGLGANREWLRKAFGSRAE-GEWPADNFLVRGTPYAKGRLLKLLLDD 231 (467) T ss_pred CCCCCCCCCCCCCCEEEECCCCCEEEEEEEEEECCCCCCHHHHHHHCCCCCC-CCCCHHCEEECCCCHHCCHHHHHHHHH T ss_conf 0264567862012146622688122468888617888897999983688757-788511001258802102689999854 Q ss_pred HHHHHCCC---------------CCCCCCCHHHHCHH----HHH--HHHHCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC Q ss_conf 01120054---------------44454410110000----134--4321147876687774356578000000001232 Q gi|254780808|r 188 KFDFDTGR---------------LKTGTPARLDGKTI----IWD--KTEKQFADERLIPFSFMTDKITNRQIECGITRTN 246 (626) Q Consensus 188 ~~~~~~~r---------------~ktgtppri~~~si----df~--~~e~q~~d~~~~~~s~~~~~~~~~q~~~~~~~t~ 246 (626) T Consensus 232 ~Ga~aiGdPt~~HvVavDaRaP~~DgGIvtRid~~~lG~VV~r~G~Rf~deGa~~~P~rya~Wgr~~--a~~Pgq~ay~l 309 (467) T TIGR02485 232 EGADAIGDPTDAHVVAVDARAPLYDGGIVTRIDSVSLGVVVDRDGERFADEGADSQPKRYAVWGRRV--ADRPGQLAYLL 309 (467) T ss_pred CCCCCCCCCCCCCEEEECCCCCCCCCCEEEEECEEECCEEECCCCCCHHHCCCCCCCCEEECHHHHH--HCCCCCEEEEE T ss_conf 1643037798730676568888457835744121211317889776124136677884130013676--35898515324 Q ss_pred CCHHHHHHHCCCCCCCCCCCCCCCCCCCCCCCC----CCCCCCCCCCCCCCEEEECCCCCCE-EEECCCCCCCCHHHH-- Q ss_conf 001477764024575414432356422255321----2335676433452013015787764-543477666898899-- Q gi|254780808|r 247 LETHRIIMENIKHSAIYSGDIKSYGPRYCPSIE----DKIVRFGERNGHQIFLEPEGLNTDV-VYPNGISTALPEEIQ-- 319 (626) Q Consensus 247 ~~~~~~~~~~~~~~~~~~g~~~~~gprycPsie----~k~~~~~~~p~h~VqLrpE~~~~~~-~n~vGFqTsL~~~~Q-- 319 (626) T Consensus 310 ld~~a~~r~~P~a~pp~~Adtl~eLA~~lgidp~~l~~tld~~naapr-vGqfdhttlddChteGvvPak~~~ar~i~v~ 388 (467) T TIGR02485 310 LDAKALKRLAPSALPPVKADTLEELAAKLGIDPDALAETLDAYNAAPR-VGQFDHTTLDDCHTEGVVPAKATAARTIAVV 388 (467) T ss_pred ECCHHHHHCCCCCCCCCCCCCHHHHHHHHCCCHHHHHHHHHCCCCCCC-CCCCCCCCHHCCCCCCCCCCCCCCCCCCCCC T ss_conf 320578635874569788888799999858888899986506787876-6655553100001356644423456565337 Q ss_pred -HHHHHHHHHHHHCCEEEECCHHHHCCCCHHHHHHHHHHHCCCEEEEEEEEEC----------CCHHHHHHHHHHHHHHH Q ss_conf -9999875434001001100012110235456567765403341566213304----------33466666677899999 Q gi|254780808|r 320 -HQFIRTIPGLEKVNIIRPGYAIEYDYINPKELFPTLETKKISGLFLAGQING----------TTGYEEAAAQGLVAGIN 388 (626) Q Consensus 320 -~rv~r~IPGLEnAef~R~Gy~ieyd~~~P~~L~~tLe~k~~~~LffAGQI~G----------teGYeEAAAqGl~AGiN 388 (626) T Consensus 389 Pf~aypm~PG~---tFt~yG--l~vDatarVr~nd---~~~~~~LFaAG~~MagnvLg~GYlaG~G~T~~AVFG~IAG~~ 460 (467) T TIGR02485 389 PFYAYPMKPGV---TFTRYG--LKVDATARVRLND---ARASDDLFAAGEIMAGNVLGKGYLAGAGLTLAAVFGRIAGRE 460 (467) T ss_pred CCCCCCCCCCC---CEEECC--EEECHHHHHHHHC---CCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH T ss_conf 73220356785---146505--0211224445425---889724788988999987310232211567778863567889 Q ss_pred HHHHCCC Q ss_conf 8742033 Q gi|254780808|r 389 SARKSNK 395 (626) Q Consensus 389 a~~~~~~ 395 (626) T Consensus 461 AAR~~~~ 467 (467) T TIGR02485 461 AARLVRK 467 (467) T ss_pred HHHCCCC T ss_conf 8520589

HHsearch alignment for GI: 254780808 and conserved domain: TIGR02485