>gnl|CDD|73402 cd04740, DHOD_1B_like, Dihydroorotate dehydrogenase (DHOD) class 1B 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.. Length = 296

Score = 109 bits (273), Expect = 1e-24 Identities = 78/320 (24%), Positives = 144/320 (45%), Gaps = 40/320 (12%) Query: 47 TKVAGISLSNPLGMAAG-YDKNAEVPIELLKLGFGFVEIGTVTPHPQAGNPRPRVFRLTK 105 ++AG+ L NP+ +A+G + E+ G + ++T P+ GNP PRV Sbjct: 2 VELAGLRLKNPVILASGTFGFGEELSRVADLGKLGAIVTKSITLEPREGNPPPRVVETP- 60 Query: 106 DRAIINKLGFNNAGYHTVFSRLS--KIQPTSPIGINLGANKDSKDFILDYVSGIRLFFTI 163 ++N +G N G L + +P+ ++ + + ++V Sbjct: 61 -GGMLNAIGLQNPGVEAFLEELLPWLREFGTPVIASIAG--STVE---EFVEVAEKLADA 114 Query: 164 -ASYFTINISSPNTP--GLRSLQKKKNLERLLIHVMQTREEEKIKTGKFVPIFLKISPDL 220 A +NIS PN G+ + + ++ + +K VP+ +K++P++ Sbjct: 115 GADAIELNISCPNVKGGGMAFGTDPEAVAEIV---------KAVKKATDVPVIVKLTPNV 165 Query: 221 SEEELDDIAVEVLSHKVEGIIVSNTTL-------SRKGVQCSDNHEQDGGLSGSPLFLKS 273 ++ + +IA +G+ + NT +RK + + GGLSG + Sbjct: 166 TD--IVEIARAAEEAGADGLTLINTLKGMAIDIETRKPILGNVT----GGLSGPAIK--- 216 Query: 274 TIALAKIRQ-RVGPKIAIIGTGGISSTKDALDKIMAGANLIQLYSAMIYEGISLPKRIIQ 332 IAL + Q +I IIG GGI+S +DAL+ +MAGA+ +Q+ +A + K II+ Sbjct: 217 PIALRMVYQVYKAVEIPIIGVGGIASGEDALEFLMAGASAVQVGTA-NFVDPEAFKEIIE 275 Query: 333 GLSDFLNKENEVNFENIRGS 352 GL +L++E + E + G Sbjct: 276 GLEAYLDEEGIKSIEELVGL 295

RPSBLAST alignment for GI: 254780434 and conserved domain: cd04740