HHsearch alignment for GI: 254780202 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=99.14  E-value=6.9e-10  Score=87.84  Aligned_cols=161  Identities=26%  Similarity=0.370  Sum_probs=99.3

Q ss_pred             CCCEEEEEC---CCCCCCCCCCCCCCCCCCCCCC---C---CCCCCCCCCCCCCCHHHHHHHHHHHHHCCCCCCCEEEEE
Q ss_conf             731599976---8988875553333236888877---5---752325888660789999999998752166787389980
Q gi|254780202|r   21 GRVAVFCRF---SGCNLWSGREQDRLSAQCRFCD---T---DFVGIQGTKGGRYNVDQLADLIEEQWITGEKEGRYCVLT   91 (211)
Q Consensus        21 G~p~vFiRl---~GCnL~c~~~~~~~~~~C~~CD---T---~y~~~~~~~~~~~~~~~i~~~i~~~~~~~~~~~~~VviT   91 (211)
T Consensus         6 GR~~~YLRiSvTDRCNl-----------RC~YCMP~~~FG~~~~f~--~~~~~Lt~eEi~rl~~~~v~~---Gv~KvRlT   69 (346)
T TIGR02666         6 GRRIDYLRISVTDRCNL-----------RCVYCMPEEGFGEGLDFL--PKEELLTFEEIERLVRAFVGL---GVRKVRLT   69 (346)
T ss_pred             CCEEEEEEEEECCCCCC-----------CCCCCCCCCCCCCCCCCC--CCCCCCCHHHHHHHHHHHHHC---CCEEEEEE
T ss_conf             77323577876164787-----------246668865678876678--755668989999999999974---97168752


Q ss_pred             CCCCCCCC-CCHHHHHHHH-CCC---EEEEECCCCCC-------CCCCCEEEEECCCCCCCC---CCC-CHHHHHHHHHH
Q ss_conf             77200003-5178999986-898---79997278886-------678850798416777410---012-12356665301
Q gi|254780202|r   92 GGEPLLQV-DVPLIQALNK-RGF---EIAVETNGTIE-------PPQGIDWICVSPKAGCDL---KIK-GGQELKLVFPQ  155 (211)
Q Consensus        92 GGEPllq~-l~~L~~~l~~-~g~---~v~IETnGt~~-------~~~~~d~it~SPK~~~~~---~~~-~~~ElK~V~~~  155 (211)
T Consensus        70 GGEPLlR~~l~~lv~~~~~~~g~~~~di~lTTNG~~L~~~a~~L~eAGL~rvNvSLDsLd~~~F~~It~~~~~l~~Vl~G  149 (346)
T TIGR02666        70 GGEPLLRKDLVELVARLAALPGIEIEDIALTTNGLLLERHAKDLKEAGLKRVNVSLDSLDPERFAKITRRGGRLEQVLAG  149 (346)
T ss_pred             CCCCCCCCCHHHHHHHHHHCCCCCCCEEEECCCHHHHHHHHHHHHHCCCCCEEEEEECCCHHHHHHHHCCCCCHHHHHHH
T ss_conf             77744136758999999842785433554100522358899999971888036540148889999985789988899999


Q ss_pred             CCCCHHHHCC-CCCCEEEECCCCCCCCHHHHHHHHHHHHHCC-CCEEE
Q ss_conf             2768578537-7857799824884246888999999999678-97797
Q gi|254780202|r  156 VNVSPENYIG-FDFERFSLQPMDGPFLEENTNLAISYCFQNP-KWRLS  201 (211)
Q Consensus       156 ~~~~~~~~~~-~~~~~~~LqP~~~~~~~~~~~~~i~~~~~~~-~~Rls  201 (211)
T Consensus       150 i~aA~~~Gl~~vKlN~V~~---~G~Nd~Ei~~l-~~~~~~~~~~lRFI  193 (346)
T TIGR02666       150 IDAALEAGLKPVKLNTVVL---RGVNDDEIVDL-AEFAKERGVTLRFI  193 (346)
T ss_pred             HHHHHHCCCCCEEEEEEEC---CCCCHHHHHHH-HHHHHHCCCEEEEE
T ss_conf             9999965998314766762---78897789999-99997579607887