>cd06183 cyt_b5_reduct_like Cytochrome b5 reductase catalyzes the reduction of 2 molecules of cytochrome b5 using NADH as an electron donor. Like ferredoxin reductases, these proteins have an N-terminal FAD binding subdomain and a C-terminal NADH binding subdomain, separated by a cleft, which accepts FAD. The NADH-binding moiety interacts with part of the FAD and resembles a Rossmann fold. However, NAD is bound differently than in canonical Rossmann fold proteins. Nitrate reductases, flavoproteins similar to pyridine nucleotide cytochrome reductases, catalyze the reduction of nitrate to nitrite. The enzyme can be divided into three functional fragments that bind the cofactors molybdopterin, heme-iron, and FAD/NADH.

Probab=100.00 E-value=6.2e-39 Score=258.02 Aligned_cols=180 Identities=17% Similarity=0.257 Sum_probs=154.4 Q ss_pred EEEEEEECCCCEEEEEEECCCC---CCCCCCCEEEECCCCCCCCEEEEEEECCCCCCC-CCEEEEEEECCCCCCCCCCCC Q ss_conf 8989984799869999807899---973898578803145861105564320566777-601799961576765310000 Q gi|254780364|r 16 SVISVKHYTDRLFRFCITRPKS---FRFRSGEFVMLGLIVNGRPIFRAYSIASPCRDD-KLEFCSIKVDKGFFTTYLQNI 91 (224) Q Consensus 16 ~V~~~~~~T~~~~~l~l~~p~~---~~f~aGQ~~~l~~~~~g~~~~R~ySiaS~p~~~-~~~~~i~~~~~g~~s~~l~~~ 91 (224) T Consensus 2 ~lv~~~~~t~d~~~~~f~~~~~~~~~~~~~GQ~v~l~~~~~g~~~~R~YS~~s~~~~~~~~~~~Vk~~~~G~~s~~L~~~ 81 (234) T cd06183 2 KLVSKEDISHDTRIFRFELPSPDQVLGLPVGQHVELKAPDDGEQVVRPYTPISPDDDKGYFDLLIKIYPGGKMSQYLHSL 81 (234) T ss_pred EEEEEEECCCCCEEEEEECCCCCCCCCCCCCEEEEEEEEECCEEEEEEEEECCCCCCCCEEEEEEEEEECCCCCHHHHCC T ss_conf 87899985899289999818986467989997899983419948997678897799999899999998099972235328 Q ss_pred CCCCCCEECCCCCCCCCCCCCCCCCCEEEEECCCCHHHHHHHHHHHHHCC-CCCEEEEEEECCCHHHHHHHHHHHHHHHH Q ss_conf 22222100168875335644676881799965868088999999865308-86338999940586454304888998875 Q gi|254780364|r 92 QPGDTILLHKKSTGDLILDSLIPGNRLYLFSMGTGIAPFASMIRDPETYK-KFDEVIITHTCGRVAELQYGIDVMHEISQ 170 (224) Q Consensus 92 ~~gd~~~~~~~p~g~f~~~~~~~~~~lvlIAgGtGiaP~~silr~~~~~~-~~~~i~l~~g~R~~~dl~~~~el~~l~~~ 170 (224) T Consensus 82 ~~Gd~l~v-~gP~G~f~~~~~~~~~~lvliagG~GItP~~s~l~~~~~~~~~~~~v~l~~~~r~~~~~~~~~el~~~~~~ 160 (234) T cd06183 82 KPGDTVEI-RGPFGKFEYKPNGKVKHIGMIAGGTGITPMLQLIRAILKDPEDKTKISLLYANRTEEDILLREELDELAKK 160 (234) T ss_pred CCCCEEEE-ECCCCCEEECCCCCCCEEEEEECCCCHHHHHHHHHHHHHCCCCCCCEEEEEECCCHHHHHHHHHHHHHHHH T ss_conf 99999998-77805367677777865999974605628999999998678878738999933877887789999999976 Q ss_pred HHHHCCCCCCCEEEEEEECCCCCCC---CCCCHHHH Q ss_conf 3321012468759998105788776---67216878 Q gi|254780364|r 171 DEILKDLIGQKLKFYRTVTQEDYLY---KGRITNHI 203 (224) Q Consensus 171 ~~~~~~~~~~~~~~~~~isre~~~~---~GrIt~~i 203 (224) T Consensus 161 ~~-------~~~~~~~~~s~~~~~~~~~~g~v~~~~ 189 (234) T cd06183 161 HP-------DRFKVHYVLSRPPEGWKGGVGFITKEM 189 (234) T ss_pred CC-------CCEEEEEEECCCCCCCCCCCCCCCHHH T ss_conf 88-------988999998678877676456247999

HHsearch alignment for GI: 254780364 and conserved domain: cd06183