HHsearch alignment for GI: 254780276 and conserved domain: cd02810

>cd02810 DHOD_DHPD_FMN Dihydroorotate dehydrogenase (DHOD) and Dihydropyrimidine dehydrogenase (DHPD) FMN-binding domain. DHOD catalyzes the oxidation of (S)-dihydroorotate to orotate. This is the fourth step and the only redox reaction in the de novo biosynthesis of UMP, the precursor of all pyrimidine nucleotides. DHOD requires FMN as co-factor. DHOD divides into class 1 and class 2 based on their amino acid sequences and cellular location. Members of class 1 are cytosolic enzymes and multimers while class 2 enzymes are membrane associated and monomeric. The class 1 enzymes can be further divided into subtypes 1A and 1B which are homodimers and heterotetrameric proteins, respectively. DHPD catalyzes the first step in pyrimidine degradation: the NADPH-dependent reduction of uracil and thymine to the corresponding 5,6-dihydropyrimidines. DHPD contains two FAD, two FMN and eight [4Fe-4S] clusters, arranged in two electron transfer chains that pass its homodimeric interface twice. Two of
Probab=96.10  E-value=0.1  Score=33.15  Aligned_cols=111  Identities=22%  Similarity=0.283  Sum_probs=76.6

Q ss_pred             HHHHHHHHCCCCEEEECCCCCCHH-------------------------------CCCHHHHHHHHHHHHHCCCCCCCCC
Q ss_conf             999999976998999867232501-------------------------------0899999998654311012344300
Q gi|254780276|r   26 EHIEWQITEGSGGLVPAGTTGESS-------------------------------TLSHEEHCRIIELCVKTVASRVPVM   74 (292)
Q Consensus        26 ~~i~~l~~~gv~gi~~~G~tGE~~-------------------------------~Ls~~Er~~~~~~~~~~~~~r~pii   74 (292)
T Consensus        24 ~~~~~~~~~G~G~vv~ktit~~~~~gn~~Pr~~~~~~~~~~~~~~~~~~N~~g~~n~g~~~~~~~l~~~~~~~-~~~pli  102 (289)
T cd02810          24 ELIARAAAAGFGAVVYKTVTLHPRPGNPLPRVARLPPEGESYPEQLGILNSFGLPNLGLDVWLQDIAKAKKEF-PGQPLI  102 (289)
T ss_pred             HHHHHHHHCCCCEEEECCCCCCCCCCCCCCEEEEECCCCCCCCCCCCEECCCCCCCCCHHHHHHHHHHHHHCC-CCCEEE
T ss_conf             9999999769878992735722015898751887036665675510362155467878899999999998617-995399


Q ss_pred             CCCCCCHHHHHHHHHHHHHHCCCCCCCE--ECCCCC-----CCCHHHHHHHHHHHHHHHCCCCEEEECHH
Q ss_conf             3674102789999753432102443200--123433-----43178899999998753023301210011
Q gi|254780276|r   75 AGIGSNNTRESVELAQYAHSIGADALLV--VIPYYN-----KPNRRGLLAHFGEIATTVSSPIYIYNNPS  137 (292)
Q Consensus        75 ~gv~~~~~~~~i~~a~~a~~~Gad~i~v--~~P~~~-----~~~~~~i~~~~~~i~~~~~~pi~iYn~P~  137 (292)
T Consensus       103 ~Si~~~~~~~~~~~a~~~~~~gad~lElNiScPn~~~~~~~~~~~~~~~~i~~~v~~~~~~Pv~vKLsp~  172 (289)
T cd02810         103 ASVGGSSKEDYVELARKIERAGAKALELNLSCPNVGGGRQLGQDPEAVANLLKAVKAAVDIPLLVKLSPY  172 (289)
T ss_pred             EECCCCCHHHHHHHHHHHHHHCCCEEEEEEECCCCCCCCCCCCCHHHHHHHHHHHHHCCCCCEEEECCCC
T ss_conf             9788898789999999999847984899840367565532014999999999999860268748842788