HHsearch alignment for GI: 254781042 and conserved domain: cd00546

>cd00546 QFR_TypeD_subunitC Quinol:fumarate reductase (QFR) Type D subfamily, 15kD hydrophobic subunit C; QFR couples the reduction of fumarate to succinate to the oxidation of quinol to quinone, the opposite reaction to that catalyzed by the related protein, succinate:quinine oxidoreductase (SQR). QFRs oxidize low potential quinols such as menaquinol and are 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. Members of this subfamily are classified as Type D as they contain two transmembrane subunits (C and D) and no heme groups. The structural arrangement allows efficient electron transfer between the catalytic subunit, through iron-sulfur centers, and the transmembrane subunit containing the electron donor (quinol). The quinone binding site resides in the transmembrane subunits.
Probab=95.55  E-value=0.12  Score=29.54  Aligned_cols=65  Identities=17%  Similarity=0.210  Sum_probs=52.0

Q ss_pred             CCHHHH-HHHHHHHHHHHHHHHHHHHHHHHHCCC--CCHHHHHHHHHCCHHHHHHHHHHHHHHHHHHH
Q ss_conf             210899-999999999999999999999996289--99899999994625999999999999999984
Q gi|254781042|r   19 KDGTGH-FIKQRFTAIANIPFIIFFIAFFIKYGD--APYEQIVSVLSNVAVASIMGLGTISISVHMQL   83 (130)
Q Consensus        19 ~~G~~h-W~~QRiSAi~L~~l~i~~i~~~~~~~~--~~y~~~~~~~~~~~~~il~~l~~~~~~~Ha~l   83 (130)
T Consensus        15 k~~FYr~YMlRE~T~v~~~~f~lvLl~Gl~~L~~g~~aw~~f~~flqnP~vv~lniiaL~a~L~Ha~T   82 (124)
T cd00546          15 KLDFYRFYMLREATAVPTVWFSLVLLYGLFALGSGPESWAGFVSFLQNPIVVLLNIIALAAALLHAKT   82 (124)
T ss_pred             CCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCHHHHHHHHHHHHCCHHHHHHHHHHHHHHHHHHH
T ss_conf             58489999998883799999999999999998069899999999983859999999999999999999