HHsearch alignment for GI: 254781042 and conserved domain: cd03494

>cd03494 SQR_TypeC_SdhD Succinate:quinone oxidoreductase (SQR) Type C subfamily, Succinate dehydrogenase D (SdhD) subunit; SQR catalyzes the oxidation of succinate to fumarate coupled to the reduction of quinone to quinol. E. coli SQR, a member of this subfamily, reduces the high potential quinine, 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. SdhD and SdhC are the two transmembrane proteins of bacterial SQRs. They contain heme and quinone binding sites. The two-electron oxidation of succinate in the flavoprotein active site is coupled to the two-electron reduction of quinone in the membrane anchor subunits via electron transport through FAD an
Probab=99.91  E-value=7.2e-24  Score=158.50  Aligned_cols=98  Identities=19%  Similarity=0.356  Sum_probs=93.7

Q ss_pred             HHHHHHHHHHHHHHHHHHHHHHHHHCCCCCHHHHHHHHHCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCHHHHHHHH
Q ss_conf             99999999999999999999999962899989999999462599999999999999998404889985127731899999
Q gi|254781042|r   24 HFIKQRFTAIANIPFIIFFIAFFIKYGDAPYEQIVSVLSNVAVASIMGLGTISISVHMQLGMQVIIEDYIHYRLLKIMFL  103 (130)
Q Consensus        24 hW~~QRiSAi~L~~l~i~~i~~~~~~~~~~y~~~~~~~~~~~~~il~~l~~~~~~~Ha~lGl~~IieDYI~~~~~k~~~~  103 (130)
T Consensus         1 DWl~QRvTAvil~~Y~~~l~~~~~~~~~~~y~~W~~~f~~~~~ki~t~l~~~sl~~HAWIGlw~V~tDYi~~~~lR~~l~   80 (99)
T cd03494           1 DWLVQRVTAVIMALYTIFLVGFLLASPPLTYEAWSGLFSSLWMKIFTLLALLALLLHAWIGLWDILTDYVKPAGLRLLLQ   80 (99)
T ss_pred             CHHHHHHHHHHHHHHHHHHHHHHHHCCCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCHHHHHHHHH
T ss_conf             91999999999999999999999986999999999999748999999999999999999968876787258099999999


Q ss_pred             HHHHHHHHHHHHHHHHHH
Q ss_conf             999999999999999999
Q gi|254781042|r  104 FMNSCFVLLLIIFCLFSL  121 (130)
Q Consensus       104 ~~~~~~~~~~~~~~i~~i  121 (130)
T Consensus        81 ~~~~l~l~~y~~w~~~il   98 (99)
T cd03494          81 VLIILVLFGYLIWGIQIL   98 (99)
T ss_pred             HHHHHHHHHHHHHHHHEE
T ss_conf             999999999999998401