HHsearch alignment for GI: 254780628 and conserved domain: TIGR00433

>TIGR00433 bioB biotin synthase; InterPro: IPR002684 Biotin synthase 2.8.1.6 from EC works with flavodoxin, S-adenosylmethionine, and possibly cysteine to catalyze the last step of the biotin biosynthetic pathway. The reaction consists of the introduction of a sulphur atom into dethiobiotin, thus requiring activation of C-H bonds . Biotin (vitamin H) is a prosthetic group in enzymes catalysing carboxylation and transcarboxylation reactions . Biotin synthase from Escherichia coli is a homodimer of 76 kDa, with each polypeptide chain carrying an oxygen-sensitive (4Fe-4S) cluster, probably ligated by three cysteines of a CXXXCXXC box conserved among all known BioB sequences and a fourth still not identified ligand. BioB displays a pyridoxal phosphate-dependent cysteine desulphurase activity, which allows mobilization of the sulphur atom from free cysteine . ; GO: 0004076 biotin synthase activity, 0009102 biotin biosynthetic process.
Probab=98.64  E-value=1.3e-06  Score=64.03  Aligned_cols=243  Identities=16%  Similarity=0.179  Sum_probs=148.9

Q ss_pred             CCCCCCCCCCEEEE--------CCC-CCCHHHHH--H--------------HHHHHHHHHHHHHC---CCE--EEEEEEC
Q ss_conf             11837657730245--------788-66288999--9--------------99999999987618---950--5899962
Q gi|254780628|r   28 CVKKCPYCDFNSHV--------RRY-KVGQENFI--Q--------------SFLTEMQWMRQLTG---PRS--ISSIFFG   77 (395)
Q Consensus        28 C~~~C~yC~f~~~~--------~~~-~~~~~~y~--~--------------~l~~Ei~~~~~~~~---~~~--~~~iy~G   77 (395)
T Consensus        42 C~EDC~YCsQSs~~~CniPiYPlk~~~~~~~~~~~~~DeCskisssier~k~~l~eA~~a~~~G~PnrGfPlWv~rFClv  121 (350)
T TIGR00433        42 CPEDCGYCSQSSRSKCNIPIYPLKDTGLPIERLKKVDDECSKISSSIEREKEILEEARAAKAAGAPNRGFPLWVTRFCLV  121 (350)
T ss_pred             CCCCCCCCCCCCCCCCCCCCCCCCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCCCCCCCEEECCEEEE
T ss_conf             76677678855526688622456674178998876765432222111111378999999997087888853035014655


Q ss_pred             --CCCCCCCC--HHHHHHHHHHHHHC-----CCCCCCCCCCCCCCCCCCHHHHHHHHHHCCCCCEEEECCCCCCHHHHHH
Q ss_conf             --88888789--99999999766404-----7644433211332104100234776630345411432343320134554
Q gi|254780628|r   78 --GGTPSLIE--PQNIALILDGIAKN-----WTVSSNVEITIEANPSSVEVNNFQGYRKAGVNRISLGVQSLEEQSLRFL  148 (395)
Q Consensus        78 --GGTPs~l~--~~~l~~ll~~i~~~-----~~~~~~~e~t~E~~P~~~~~~~l~~l~~~Gv~RiS~GvQs~~~~~l~~~  148 (395)
T Consensus       122 asGR~~~~~~~~dref~~~v~~~~~~~~~ee~GL~~C------~~LG~l~~eqa~~LKdAGld~YNHNl~~TS~~~y~~I  195 (350)
T TIGR00433       122 ASGRGPKDRESKDREFIEIVEAVVKIVEEEELGLKTC------ATLGLLDPEQAKQLKDAGLDRYNHNLDETSQEYYSKI  195 (350)
T ss_pred             ECCCCCCCCCCCCCHHHHHHHHHHHHHHHCCCCCHHH------HCCCCCCHHHHHHHHHCCCCCCCCCHHHHHHHHCCCC
T ss_conf             4178888777422028899999999975200371223------2037768899998886388611167367878766873


Q ss_pred             HCCCCCHHHHHHHHHHHCCCCCCCCCCCCCCCCCCCCCCCCCHHHHHHC--CCCCEEEEEEEEECCCEEHHHHHCCCCCC
Q ss_conf             2244313478999986302444333210002585432211127887531--80012346468825960001454498021
Q gi|254780628|r  149 GRNHNASEAIAAIHLARNIFPRMSFDLIYALPKQTMTQWEMELQRALSY--AVDHLSLYQLTIEKGTLFYKMHKDGDLVL  226 (395)
Q Consensus       149 ~R~~~~~~~~~~~~~~~~~~~~v~iDli~GlPgqt~e~~~~~l~~~~~l--~p~~is~Y~l~i~~~t~l~~~~~~~~~~~  226 (395)
T Consensus       196 ~sThty~DR~~T~~~~k~aGl~~CsGGI~Gl-gEt~~DrI~l~~~L~~L~p~peSvPiN~L~~~~GTP~~E~L~~~~~~~  274 (350)
T TIGR00433       196 ISTHTYDDRVDTVKNAKEAGLKVCSGGILGL-GETWEDRIGLALALANLSPEPESVPINFLVKIEGTPAYEKLADGEVKK  274 (350)
T ss_pred             EECCCHHHHHHHHHHHHHCCCCCCCCCEECC-CCCHHHHHHHHHHHHCCCCCCCEECCCCEECCCCCCCHHHHCCCCCCC
T ss_conf             4323077679999999973887244623458-988899999999975277678701113202688885344315888673


Q ss_pred             CHHHHHHHHHHHHHHHHHHCCCCCCCCCCHHHHHHHHCCCCCCCCCCC--EEECCCCCCCCCCC
Q ss_conf             103567889998655788709624236743431011013321124441--23204320011578
Q gi|254780628|r  227 PSENVAVDLYNLTQSITSAHGLHAYEISNHSFLGAESLHNLNYWRYGD--YIGIGPGAHSRVKV  288 (395)
Q Consensus       227 p~~~~~~~~~~~a~e~L~~~GY~~Yeis~fak~~~~s~hn~~Yw~~~d--~iG~G~GA~S~l~~  288 (395)
T Consensus       275 L~~~~~Lk~iA~ari~mP~~-~iRl--a----gGR~~--~m~--e~~~kea~~~~ag~Nsif~G  327 (350)
T TIGR00433       275 LSADDALKTIALARIIMPKA-EIRL--A----GGREV--NMK--ELQQKEAMCFMAGANSIFVG  327 (350)
T ss_pred             CCHHHHHHHHHHHHHHCCCC-EEEE--E----CCEEE--ECC--CCCHHHHHHHHHHHHHHEEC
T ss_conf             38899999999988654311-0010--0----25145--047--67548999999842123046