>gnl|CDD|73403 cd04741, DHOD_1A_like, Dihydroorotate dehydrogenase (DHOD) class 1A 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 = 294

Score = 76.5 bits (188), Expect = 1e-14 Identities = 75/312 (24%), Positives = 120/312 (38%), Gaps = 42/312 (13%) Query: 47 TKVAGISLSNPLGMAAG-YDKNAEVPIELLKLGFGFVEIGTVTPHPQAGNPRPRVFRLTK 105 G+++S PL AAG + E +EL G V + T + GNP PR + Sbjct: 1 VTPPGLTISPPLMNAAGPWCTTLEDLLELAASSTGAVTTRSSTLAGRPGNPEPRYYAFPL 60 Query: 106 DRAIINKLGFNNAGYHTVFSRLSKIQPTSPIGINLGANKDSKDFIL-------DYVSGIR 158 IN LG N G + I G +K F + D + + Sbjct: 61 --GSINSLGLPNLGLDYYLEYIRTISD--------GLPGSAKPFFISVTGSAEDIAAMYK 110 Query: 159 LFFTIASYFT----INISSPNTPGLRSLQKKKNLERLLIHVMQTREEEKIKTGKFVPIFL 214 F +N+S PN PG + + L ++ +K +P+ + Sbjct: 111 KIAAHQKQFPLAMELNLSCPNVPG--KPPPAYDFDATLEYL------TAVKAAYSIPVGV 162 Query: 215 KISPDLSEEELDDIAVEVLSHKVEGI--IVSNTTLSRKGVQCSDNHEQD--------GGL 264 K P + D +A E L+ I I + TL G+ E GGL Sbjct: 163 KTPPYTDPAQFDTLA-EALNAFACPISFITATNTLG-NGLVLDPERETVVLKPKTGFGGL 220 Query: 265 SGSPLFLKSTIALAKIRQRVGPKIAIIGTGGISSTKDALDKIMAGANLIQLYSAMIYEGI 324 +G+ L + + R+ + +I IIG GG+ + A +AGA+ +Q+ +A+ EG Sbjct: 221 AGAYLHPLALGNVRTFRRLLPSEIQIIGVGGVLDGRGAFRMRLAGASAVQVGTALGKEGP 280 Query: 325 SLPKRIIQGLSD 336 + RI + L D Sbjct: 281 KVFARIEKELED 292

RPSBLAST alignment for GI: 254780434 and conserved domain: cd04741