HHsearch alignment for GI: 254780283 and conserved domain: TIGR01812

>TIGR01812 sdhA_frdA_Gneg succinate dehydrogenase or fumarate reductase, flavoprotein subunit; InterPro: IPR014006 Succinate:quinone oxidoreductase (1.3.5.1 from EC) refers collectively to succinate:quinone reductase (SQR, or Complex II) and quinol:fumarate reductase (QFR) . SQR is found in aerobic organisms, and catalyses the oxidation of succinate to fumarate in the citric acid cycle and donates the electrons to quinone in the membrane. QFR can be found in anaerobic cells respiring with fumarate as terminal electron acceptor. SQR and QFR are very similar in composition and structure, despite catalysing opposite reactions in vivo. They are thought to have evolved from a common ancestor, and in Escherichia coli they are capable of functionally replacing each other . Succinate:quinone oxidoreductases consist of a peripheral domain, exposed to the cytoplasm in bacteria and to the matrix in mitochondria, and a membrane-integral anchor domain that spans the membrane (Fig. 1). The peripheral part, which contains the dicarboxylate binding site, is composed of a flavoprotein subunit, with one covalently bound FAD, and an iron-sulphur protein subunit containing three iron-sulphur clusters. The membrane-integral domain functions to anchor the peripheral domain to the membrane and is required for quinone reduction and oxidation. The anchor domain shows the largest variability in composition and primary sequence, being composed either of one large subunit, or two smaller subunits, which may, or may not, contain protoheme groups. This entry represents the flavoprotein subunit found in both the SQR and QFR enzymes. This subunit contains an N-terminal domain which binds the FAD cofactor, a central catalytic domain with an unsual fold, and a C-terminal domain whose role is unclear , , . The dicarboxylate binding site is located between the FAD and catalytic domains..
Probab=99.14  E-value=7.2e-10  Score=76.20  Aligned_cols=300  Identities=20%  Similarity=0.255  Sum_probs=142.9

Q ss_pred             EEEEECCCHHHHHHHHHHHHCC---CCEEEEECCC---------CCCE---EE-E-------------------------
Q ss_conf             1999989777999999999869---9599996788---------7756---87-5-------------------------
Q gi|254780283|r    7 KILIIGSGPAGYTAAIYAARAM---LKPVIIAGSD---------LGGQ---LM-I-------------------------   45 (321)
Q Consensus         7 dVvIIG~GpAGl~aA~~l~r~g---~~v~iie~~~---------~GG~---l~-~-------------------------   45 (321)
T Consensus         1 D~vIVGaGgAGlRAA~e~a~~gPp~~~~AvisKvyP~RSHtvAAQGG~~Aal~~n~d~~D~~e~H~yDTVKGsDyLaDQD   80 (636)
T TIGR01812         1 DVVIVGAGGAGLRAAVEAAKAGPPNLNVAVISKVYPTRSHTVAAQGGIAAALANNVDPDDSWEWHAYDTVKGSDYLADQD   80 (636)
T ss_pred             CEEEECCCHHHHHHHHHHHHCCCCCCEEEEEECCCCCCCCCHHHHHHHHHHHCCCCCCCCCCCCCEEEEECCCCCCHHHH
T ss_conf             97888186689999999973577961079995569885201535678999957786432072123041101442132589


Q ss_pred             ----------------------ECCCC---------------------C-------CCC--CC------------CCCCH
Q ss_conf             ----------------------01007---------------------8-------774--77------------77897
Q gi|254780283|r   46 ----------------------TESIE---------------------N-------YPG--FA------------TSIRG   61 (321)
Q Consensus        46 ----------------------~~~i~---------------------n-------~~g--~~------------~~~~~   61 (321)
T Consensus        81 Ave~~~~~AP~~v~eLe~wG~PfSR~~kGDRmaiinaqkttiteeDfRDG~IaQR~FGG~~~~~Gg~~a~RTcyAADkTG  160 (636)
T TIGR01812        81 AVEYMCKEAPKAVLELERWGVPFSRLPKGDRMAIINAQKTTITEEDFRDGRIAQRPFGGASFDYGGAAARRTCYAADKTG  160 (636)
T ss_pred             HHHHHHHHCCHHHHHHHHCCCCCCCCCCCCEEEEEECCCCEECCCCCCCCCEEECCCCCCCCCCCCCHHHHHHHHHCCCC
T ss_conf             99999851517899997378985678677647776245420020115588353437888886556622213420012113


Q ss_pred             HHHHHHHHHHHHHC-CCCCCCEE-EEECCCC-CC--CC----CCCCCCCC--CCCCCEECCCCCCCCEEEE-E-CCCCCC
Q ss_conf             89998664323200-23222113-3201122-22--22----22222222--2210000147766420246-5-277433
Q gi|254780283|r   62 DWLMEQMRQQAENF-GTKIIQDL-VVSVDLD-RH--PF----LVETQSGD--LWHADAVVIATGSEVKWLR-L-ESEKKF  128 (321)
Q Consensus        62 ~~l~~~~~~~~~~~-~v~~~~~~-V~~i~~~-~~--~~----~v~~~~g~--~~~a~~lIiAtG~~~~~~~-i-pG~~~~  128 (321)
T Consensus       161 h~~LHTLye~~l~~~~V~ff~E~fa~~L~~~~~~GP~~~Gvva~~l~~G~~~~~~AKaVv~ATGG~GR~Y~~~tTNa~~~  240 (636)
T TIGR01812       161 HALLHTLYEQCLKLDGVEFFNEYFALDLILDQDGGPRVRGVVAYDLKTGEIVFFRAKAVVLATGGYGRVYKFTTTNAHIN  240 (636)
T ss_pred             HHHHHHHHHHHHCCCCCEEEHHHHHHHHHHHCCCCCEEEEEEEEEECCCEEEEEEECCEEEEECCCHHHHCCCCCCCEEE
T ss_conf             14789899998537994275388887788745898679999999805880899960748983065102103044544223


Q ss_pred             CEEECC-----CCC-CCCCCC--CCCCCEEEEECCCCCCCCEEEEECCCCCCCCCC-CCCCCCCC-CCC---CCCCCCCC
Q ss_conf             202101-----211-111111--122100001025565431012101333222344-34332211-112---11223554
Q gi|254780283|r  129 QGFGVS-----ACA-TCDGFF--YKNKDVIVVGGGNTAAEEALHLAKIARRVTIVH-RRSSLRSE-KIL---QEKLFLQS  195 (321)
Q Consensus       129 ~~~~v~-----~~~-~~d~~~--~~~k~v~ViGgG~~g~e~A~~L~~~~~~Vtli~-r~~~l~~~-~~~---~~~~~~~~  195 (321)
T Consensus       241 TGDG~A~AlraG~PqL~DMEFvQFH--PTGL~~sGiL~tEgc----R-GEGGyL~N~~GeRFM~ryGYAPetP~k~eL-A  312 (636)
T TIGR01812       241 TGDGLAMALRAGVPQLKDMEFVQFH--PTGLAPSGILITEGC----R-GEGGYLINKEGERFMERYGYAPETPEKMEL-A  312 (636)
T ss_pred             CCCHHHHHHHHCCCCCCCCCCEECC--CCCCCCCCEEEEEEE----E-CCCCEEECCCCCCCCCCCCCCCCCCCCCCC-C
T ss_conf             5406888887346431684405036--745566771774013----3-276168678753103446888788750004-7


Q ss_pred             CCCCCCCCCEEECCCCCCCCC-CCCCCCCEEECCCCCCCC--------------CCCCCCCCCCC-CCCCCCHHHHHCCC
Q ss_conf             433222231121148643334-444433314203210000--------------01122221112-32235656774256
Q gi|254780283|r  196 NIDFLFDTEVVDVIGSIPEPP-LFPSVSGVRLHNKKEGNF--------------FERNVDGIFIA-IGYKPNTKIFRHQL  259 (321)
Q Consensus       196 ~i~~~~~~~v~~i~g~~~~~~-~~~~~~~v~~~~~~~g~~--------------~~i~~D~vi~a-~G~~pn~~~~~~~~  259 (321)
T Consensus       313 pRDvVSRa~~~EireGRGv~~~~~k~~v~LDLrH--LGee~i~~RLP~i~E~A~~f~GVDPv~~pWiPVrPt~HY~MGGI  390 (636)
T TIGR01812       313 PRDVVSRAMVTEIREGRGVGSGPGKDYVYLDLRH--LGEEKIEERLPQIRELAKTFAGVDPVKEPWIPVRPTAHYSMGGI  390 (636)
T ss_pred             CCCHHHHHHHHHHHHCCCCCCCCCCCEEEEEHHH--CCHHHHHHCCHHHHHHHHHHCCCCCCCCCCCCCCCCCCCCCCCE
T ss_conf             8769999999999844888988788778876401--34788852075689999970488830057626456444118278


Q ss_pred             CEECCCCEEEECCCCCCC-CCCEEEECCCCCC--------CHHHHHHHHHHHHHHHHHHHHHHHHH
Q ss_conf             180699799008885547-8982897012688--------44567899997999999999999742
Q gi|254780283|r  260 KMTNTNYIWTMPDSTATS-IPGIFAAGDVADE--------RYRQAITAAAMGCMAALEVEHYLSIH  316 (321)
Q Consensus       260 ~~~~~g~i~~~~~~~~Ts-~p~Iya~GDv~~~--------~~~~~~~A~~~G~~Aa~~i~~yl~~~  316 (321)
T Consensus       391 ~T~~~G~~~~~D~~~~~~iv~GLfAaGE~ACVSVHGANRLGsNSLle~vVFGr~aG~~~ae~~~~~  456 (636)
T TIGR01812       391 DTNYRGQVIGEDAKNNDSIVKGLFAAGECACVSVHGANRLGSNSLLELVVFGRIAGEAAAEYLAKT  456 (636)
T ss_pred             EECCCCEEECCCCCCCCCCCCCEEEEEEEEECCCCCCCCCCHHHHHHHHHHHHHHHHHHHHHHHCC
T ss_conf             445842487016788886210102201022203412130605679999999799999999998606