HHsearch alignment for GI: 254781120 and conserved domain: TIGR02666
>TIGR02666 moaA molybdenum cofactor biosynthesis protein A; InterPro: IPR013483 The majority of molybdenum-containing enzymes utilise a molybdenum cofactor (MoCF or Moco) consisting of a Mo atom coordinated via a cisdithiolene moiety to molybdopterin (MPT). MoCF is ubiquitous in nature, and the pathway for MoCF biosynthesis is conserved in all three domains of life. MoCF-containing enzymes function as oxidoreductases in carbon, nitrogen, and sulphur metabolism , . In Escherichia coli, biosynthesis of MoCF is a three stage process. It begins with the MoaA and MoaC conversion of GTP to the meta-stable pterin intermediate precursor Z. The second stage involves MPT synthase (MoaD and MoaE), which coverts precursor Z to MPT; MoeB is involved in the recycling of MPT synthase. The final step in MoCF synthesis is the attachment of mononuclear Mo to MPT, a process that requires MoeA and which is enhanced by MogA in an Mg2 ATP-dependent manner . MoCF is the active co-factor in eukaryotic and some prokaryotic molybdoenzymes, but the majority of bacterial enzymes requiring MoCF, need a modification of MTP for it to be active; MobA is involved in the attachment of a nucleotide monophosphate to MPT resulting in the MGD co-factor, the active co-factor for most prokaryotic molybdoenzymes. Bacterial two-hybrid studies have revealed the close interactions between MoeA, MogA, and MobA in the synthesis of MoCF . Moreover the close functional association of MoeA and MogA in the synthesis of MoCF is supported by fact that the known eukaryotic homologues to MoeA and MogA exist as fusion proteins: CNX1 () of Arabidopsis thaliana (Mouse-ear cress), mammalian Gephryin (e.g. Q9NQX3 from SWISSPROT) and Drosophila melanogaster (Fruit fly) Cinnamon (P39205 from SWISSPROT) . This entry represents the bacterial form of MoaA (molybdenum cofactor biosynthesis protein A). The MoaA protein is a member of the wider S-adenosylmethionine(SAM)-dependent enzyme family which catalyze the formation of protein and/or substrate radicals by reductive cleavage of SAM via a [4Fe-4S] cluster. Monomeric and homodimeric forms of MoaA have been observed in vivo, and it is not clear what the physiologically relevant form of the enzyme is . The core of each monomer consists of an incomplete TIM barrel, formed by the N-terminal region of the protein, containing a [4Fe-4S] cluster. The C-terminal region of the protein, which also contains a [4Fe-4S] cluster consists of a beta-sheet covering the lateral opening of the barrel, an extended loop and three alpha helices. The N-terminal [4Fe-4S] cluster is coordinated with 3 cysteines and an exchangeable SAM molecule, while the C-terminal [4Fe-4S], also coordinated with 3 cysteines, is the binding and activation site for GTP .; GO: 0046872 metal ion binding, 0006777 Mo-molybdopterin cofactor biosynthetic process.
Probab=98.65 E-value=1.4e-06 Score=69.79 Aligned_cols=207 Identities=21% Similarity=0.343 Sum_probs=139.4
Q ss_pred EEECCCCHHCCCCCCCCC-----C-HHHC--CCCHHHHHHHH-HHHHHHHHHCCCCCCCCCCCCCCCCCCCCEEEEECCC
Q ss_conf 884065100486132244-----1-1102--78989999999-9999972220344443434445458611014410145
Q gi|254781120|r 118 VSSQVGCSLTCSFCYTGT-----Q-KLVR--NLTAEEILLQV-LLARSLLGDFPGCEDIEGMVIPSVGRKISNIVMMGMG 188 (384)
Q Consensus 118 vSSQvGC~m~C~FCaTg~-----~-G~~R--NLt~~EIv~Qv-~~~~~~l~~~~~~~~~~~~~~~~~~~~i~NiVfMGmG 188 (384)
T Consensus 14 iSvTDRCNlRC~YCMP~~~FG~~~~f~~~~~~Lt~eEi~rl~~~~v~~Gv~----------------KvRlT------GG 71 (346)
T TIGR02666 14 ISVTDRCNLRCVYCMPEEGFGEGLDFLPKEELLTFEEIERLVRAFVGLGVR----------------KVRLT------GG 71 (346)
T ss_pred EEECCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCHHHHHHHHHHHHHCCCE----------------EEEEE------CC
T ss_conf 876164787246668865678876678755668989999999999974971----------------68752------77
Q ss_pred CHHHHHHHHHHHHHCCCCCCCCCCCCCEEEEEECCCCHHHHHHHCCC---C-CCEEEEEECCCCHHHHHHCCCCCCCCHH
Q ss_conf 44542899999960376845778775368885138741478860125---6-5179984045511344412331257899
Q gi|254781120|r 189 EPLCNFDNVKKSLSIASDSMGLSFSKRRITLSTSGFVPNIARVGEEI---G-VMLAISLHAVSNDLRNILVPINRKYPLE 264 (384)
Q Consensus 189 EPl~N~d~v~~ai~~l~~~~g~~~~~r~ITvST~Gi~p~I~~la~~~---~-~~LAiSLha~~~~~R~~lmPi~~~~~l~ 264 (384)
T Consensus 72 EPLlR-~~l~~lv~~~~~~~g~~--~~di~lTTNG~~--L~~~a~~L~eAGL~rvNvSLDsLd~~~F~~It~--~~~~l~ 144 (346)
T TIGR02666 72 EPLLR-KDLVELVARLAALPGIE--IEDIALTTNGLL--LERHAKDLKEAGLKRVNVSLDSLDPERFAKITR--RGGRLE 144 (346)
T ss_pred CCCCC-CCHHHHHHHHHHCCCCC--CCEEEECCCHHH--HHHHHHHHHHCCCCCEEEEEECCCHHHHHHHHC--CCCCHH
T ss_conf 74413-67589999998427854--335541005223--588999999718880365401488899999857--899888
Q ss_pred HHHHHHHHHHHHCCCCEEEEEEEEECCCCCCHHHHHHHHHHHCCCCCEEEEEECCCCCCC-C-CCCCCHHHHHHHHHHHH
Q ss_conf 999999999862589459999987269998889999999983254531667512778879-8-86889899999999999
Q gi|254781120|r 265 MLIDACRHYPGLSNARRITFEYVMLKGINDSPRDALNLIKILKGIPAKINLIPFNPWPGC-E-YLCSDQKDIVTFSECIK 342 (384)
Q Consensus 265 ~l~~a~~~y~~~~~~rrit~EYvli~gvNDs~e~a~~L~~ll~~~~~~vNLIp~N~~~~~-~-~~~~~~~~i~~F~~~L~ 342 (384)
T Consensus 145 ~Vl~Gi~aA~~-~Gl~~vKlN~V~~~G~Nd--~Ei~~l~~~~~~~~~~lRFIE~MP~G~~~~~~~~~~~~~~~~~l~~~~ 221 (346)
T TIGR02666 145 QVLAGIDAALE-AGLKPVKLNTVVLRGVND--DEIVDLAEFAKERGVTLRFIELMPLGEGGNGWRGKEFVSADEILERLE 221 (346)
T ss_pred HHHHHHHHHHH-CCCCCEEEEEEECCCCCH--HHHHHHHHHHHHCCCEEEEEEECCCCCCCCCCCCCCCCCHHHHHHHHH
T ss_conf 99999999996-599831476676278897--789999999975796078875154676300000034535899999999
Q ss_pred HC-CCEEEECCCCCC
Q ss_conf 87-987854158777
Q gi|254781120|r 343 RS-GYSSPIRTPRGL 356 (384)
Q Consensus 343 ~~-Gi~~tiR~srG~ 356 (384)
T Consensus 222 ~~~~~l~p~~~~~~~ 236 (346)
T TIGR02666 222 QAFGPLEPVPSPRGN 236 (346)
T ss_pred HHCCCCCCCCCCCCC
T ss_conf 743863445678888