HHsearch alignment for GI: 254781042 and conserved domain: cd03496
>cd03496 SQR_TypeC_CybS SQR catalyzes the oxidation of succinate to fumarate coupled to the reduction of quinone to quinol. Eukaryotic SQRs reduce high potential quinones such as ubiquinone. SQR is also called succinate dehydrogenase or Complex II, and is part of the citric acid cycle and the aerobic respiratory chain. SQR is composed of a flavoprotein catalytic subunit, an iron-sulfur protein and one or two hydrophobic transmembrane subunits. Members of this subfamily are classified as Type C SQRs because they contain two transmembrane subunits and one heme group. CybS and CybL are the two transmembrane proteins of eukaryotic SQRs. They contain heme and quinone binding sites. CybS is the eukaryotic homolog of the bacterial SdhD subunit. The two-electron oxidation of succinate in the flavoprotein active site is coupled to the two-electron reduction of quinone in the transmembrane subunits via electron transport through FAD and three iron-sulfur centers. The reversible reduction of
Probab=98.68 E-value=6.7e-08 Score=65.87 Aligned_cols=62 Identities=18% Similarity=0.272 Sum_probs=49.8
Q ss_pred CCHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCCCHHHHHHHHHCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCHH
Q ss_conf 2108999999999999999999999999962899989999999462599999999999999998404889985127731
Q gi|254781042|r 19 KDGTGHFIKQRFTAIANIPFIIFFIAFFIKYGDAPYEQIVSVLSNVAVASIMGLGTISISVHMQLGMQVIIEDYIHYRL 97 (130)
Q Consensus 19 ~~G~~hW~~QRiSAi~L~~l~i~~i~~~~~~~~~~y~~~~~~~~~~~~~il~~l~~~~~~~Ha~lGl~~IieDYI~~~~ 97 (130)
T Consensus 1 ~~gSyHW~~ER~~sv~LlpL~~~~~-----------------~~~~~~pv~D~~La~~l~~H~h~Gf~s~I~DYip~r~ 62 (104)
T cd03496 1 LHGSYHWTFERILAVSLLPLTPAAF-----------------FAPGLSPVMDAALAAALLLHSHWGFESCIIDYVPKRV 62 (104)
T ss_pred CCCCCHHHHHHHHHHHHHHHHHHHH-----------------HCCCCCHHHHHHHHHHHHHHHHHCCCEEEEEECCHHH
T ss_conf 9974010999999999998889999-----------------7488648799999999999988540446761047221