>cd03526 SQR_QFR_TypeB_TM Succinate:quinone oxidoreductase (SQR) and Quinol:fumarate reductase (QFR) Type B subfamily, transmembrane subunit; SQR catalyzes the oxidation of succinate to fumarate coupled to the reduction of quinone to quinol, while QFR catalyzes the reverse reaction. SQR, also called succinate dehydrogenase or Complex II, is part of the citric acid cycle and the aerobic respiratory chain, while QFR is involved in anaerobic respiration with fumarate as the terminal electron acceptor. SQR and QFR share a common subunit arrangement, composed of a flavoprotein catalytic subunit, an iron-sulfur protein and one or two hydrophobic transmembrane subunits. Type B proteins contain one transmembrane subunit and two heme groups. The heme and quinone binding sites reside in the transmembrane subunits. The structural arrangement allows efficient electron transfer between the catalytic subunit, through iron-sulfur centers, and the transmembrane subunit containing the electron donor/acc

Probab=95.39  E-value=0.18  Score=27.40  Aligned_cols=67  Identities=15%  Similarity=0.054  Sum_probs=55.0

Q ss_pred             HHHHHHHHHHHHHHHHHHHHHHHHHCCCHHHHHHHHHCCCH--HHHHHHHHHHHHHHHHHHHHHHHHHH
Q ss_conf             99999999999999999999998516303554675306831--69999999999999999989999985
Q gi|254781041|r   28 VHRITGSVVYLGTPVVVFWFFCIANGEHTLSSLRCYMDGSV--FEVCLFLYTWAVIHHMLGGIRYLIWD   94 (129)
Q Consensus        28 ~HRitGi~l~~~~~~~~~~l~~~~~~~~~~~~~~~~~~~~~--~k~~~~~~~~~~~yH~~nGiRHL~wD   94 (129)
T Consensus         4 ~qSlTGl~L~lFl~~Hm~~N~~i~~g~e~fn~~a~~l~~~p~l~~~~~~~i~~~~l~H~~~a~~~~~~~   72 (199)
T cd03526           4 LQSATGLFLGLFMIGHLFFNSTILLGDNVMNWVAKKFELLPIVVSFLAAFIFAVFIAHAFLGVRKFPIY   72 (199)
T ss_pred             HHHHHHHHHHHHHHHHHHHHHHHHHCHHHHHHHHHHHHHCHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
T ss_conf             998999999999999999999999199999999999865759999999999999999999999998997