>cd04739 DHOD_like Dihydroorotate dehydrogenase (DHOD) like proteins. 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. This subgroup has the conserved FMN binding site, but lacks some catalytic residues and may therefore be inactive.

Probab=99.23 E-value=2.2e-09 Score=86.67 Aligned_cols=174 Identities=21% Similarity=0.226 Sum_probs=117.2 Q ss_pred CCHHHHHHHHHHHCCCCEEEEECCCCH----------HHHHHHHHHHHHHHCCCCCEEC---CCCCC-HHHHHHHHHCCC Q ss_conf 701567899987313666998248411----------3889999999998579872451---46469-999999985487 Q gi|254780889|r 231 AKDIADRVGPLFDVNVDLVVVDTAHGH----------SQKVLDAVVQIKKNFPSLLVMA---GNIAT-AEGALALIDAGA 296 (493) Q Consensus 231 ~~d~~eRa~~LveaGvDviviD~ahGh----------~~~~~~~i~~~k~~~~~~~ii~---GNv~t-~~~~~~l~~~Ga 296 (493) T Consensus 111 ~ee~~~~a~~~~~~gad~lElNls~~~~~~~~~~~~~~~~~~~iv~~Vk~~~-~~Pv~vKLsP~~~di~~ia~aa~~~GA 189 (325) T cd04739 111 AGGWVDYARQIEEAGADALELNIYALPTDPDISGAEVEQRYLDILRAVKSAV-TIPVAVKLSPFFSALAHMAKQLDAAGA 189 (325) T ss_pred HHHHHHHHHHHHHCCCCEEEEECCCCCCCCCCCCCHHHHHHHHHHHHHHHCC-CCCEEEECCCCCCHHHHHHHHHHHCCC T ss_conf 8999999999976499879996566788855442106889999999998607-886699539983009999999997599 Q ss_pred CEEEE-EECCC---CCCCCCHHCCC--CCCCC--HHHHHHHHHHHCCCCEEEEECCCCCHHHHEEEEEECCCEEEECCHH Q ss_conf 58996-10278---76653100015--74310--0378899986226981997265437776213367148789932301 Q gi|254780889|r 297 DIIKV-GIGPG---SICTTRVVTGV--GCPQL--SAIMSVVEVAERAGVAIVADGGIRFSGDIAKAIAAGSACVMIGSLL 368 (493) Q Consensus 297 d~ikv-Gig~G---s~CtTr~~~g~--g~pq~--~av~~~~~~~~~~~~~iiadGGi~~~gdi~kAla~GA~~VM~G~~~ 368 (493) T Consensus 190 dgi~liNT~~~~~id~~~~~~~~~~~lSg~~~~~~alr~v~~~~~~~~ipIiG~GGI~s~~Da~e~ilAGAsaVQv~TA~ 269 (325) T cd04739 190 DGLVLFNRFYQPDIDLETLEVVPNLLLSSPAEIRLPLRWIAILSGRVKASLAASGGVHDAEDVVKYLLAGADVVMTTSAL 269 (325) T ss_pred CEEEEECCCCCCCCCCCCCEEECCCCCCCCCCCHHHHHHHHHHHCCCCCCEEEECCCCCHHHHHHHHHCCCCHHHEEHHH T ss_conf 88997357665642167641536877457530068899999996468989888889598999999998098876143234 Q ss_pred HCCCCCCCCEEEECCEEEEEEECCCCHHHHHHCCHHHHCCCCCCCCCCEECCCCEEEEECCCCHHHHHHHHHHHHHHHHH Q ss_conf 01216776448736805888733200688752212221012333433100454026621057589989999999998555 Q gi|254780889|r 369 AGTDESPGDIFLYQGRSFKSYRGMGSVAAMERGSSARYSQDGVTDVLKLVPEGIEGRVPYKGPIASVLHQMSGGLKSSMG 448 (493) Q Consensus 369 agt~Espg~~~~~~g~~~K~yrGm~S~~A~~~~~~~ry~~~~~~~~~k~v~eGv~~~v~~~G~~~~~~~~~~~glrs~~~ 448 (493) T Consensus 270 ~-------------------~~G~-----------------------------------------~i~~~i~~eL~~~m~ 289 (325) T cd04739 270 L-------------------RHGP-----------------------------------------DYIGTLLAGLEAWME 289 (325) T ss_pred H-------------------HHCC-----------------------------------------HHHHHHHHHHHHHHH T ss_conf 6-------------------4183-----------------------------------------799999999999999 Q ss_pred HCCCCCHHHHHHCCEEE Q ss_conf 15758776897375999 Q gi|254780889|r 449 YVGASNIEEFQKKANFI 465 (493) Q Consensus 449 y~G~~~i~e~~~~~~f~ 465 (493) T Consensus 290 ~~G~~si~e~~Gkl~~~ 306 (325) T cd04739 290 EHGYESVQQLRGSMSQK 306 (325) T ss_pred HCCCCCHHHHCCCCCCC T ss_conf 83999799962734545

HHsearch alignment for GI: 254780889 and conserved domain: cd04739