HHsearch alignment for GI: 254780451 and conserved domain: TIGR00170

>TIGR00170 leuC 3-isopropylmalate dehydratase, large subunit; InterPro: IPR004430 3-isopropylmalate dehydratase (or isopropylmalate isomerase; 4.2.1.33 from EC) catalyses the stereo-specific isomerisation of 2-isopropylmalate and 3-isopropylmalate, via the formation of 2-isopropylmaleate. This enzyme performs the second step in the biosynthesis of leucine, and is present in most prokaryotes and many fungal species. The prokaryotic enzyme is a heterodimer composed of a large (LeuC) and small (LeuD) subunit, while the fungal form is a monomeric enzyme. Both forms of isopropylmalate are related and are part of the larger aconitase family . Aconitases are mostly monomeric proteins which share four domains in common and contain a single, labile [4Fe-4S] cluster. Three structural domains (1, 2 and 3) are tightly packed around the iron-sulphur cluster, while a fourth domain (4) forms a deep active-site cleft. The prokaryotic enzyme is encoded by two adjacent genes, leuC and leuD, corresponding to aconitase domains 1-3 and 4 respectively , . LeuC does not bind an iron-sulphur cluster. It is thought that some prokaryotic isopropylamalate dehydrogenases can also function as homoaconitase 4.2.1.36 from EC, converting cis-homoaconitate to homoisocitric acid in lysine biosynthesis . Homoaconitase has been identified in higher fungi (mitochondria) and several archaea and one thermophilic species of bacteria, Thermus thermophilus . Members of this entry are 3-isopropylmalate dehydratase, large subunit, or the large subunit domain of single-chain forms. Homoaconitase, aconitase, and 3-isopropylmalate dehydratase have similar overall structures. All are dehydratases (4.2.1 from EC) and bind a [4Fe-4S]-cluster. 3-isopropylmalate dehydratase is split into large (leuC) and small (leuD) chains in eubacteria. Several pairs of archaeal proteins resemble the leuC and leuD pair in length and sequence but even more closely resemble the respective domains of homoaconitase, and their identity is uncertain. The archaeal leuC-like proteins are not included in group.; GO: 0003861 3-isopropylmalate dehydratase activity, 0051539 4 iron 4 sulfur cluster binding, 0009098 leucine biosynthetic process, 0009316 3-isopropylmalate dehydratase complex.
Probab=100.00  E-value=0  Score=737.16  Aligned_cols=452  Identities=26%  Similarity=0.376  Sum_probs=374.3

Q ss_pred             CCCHHHHHHHHHCCCCCCCCCCCCCCCCCHHHEECCCCHHHHHHHHHHHHHHHHCCCCHHHCCCCCCEEEEEECCCHHHC
Q ss_conf             57999999986123554577766364532522000003579999999999999719999992878981399868321100
Q gi|254780451|r   59 TVTKEQIHAFVKWLDNKGTVESEVSYRFSRVLMQDFTGVPAVVDLAAMRDAIVVLGGDPQNINPLVPVDLVIDHSLIVDY  138 (896)
Q Consensus        59 ~~~~~~~~~~~~w~~~~~~~~~ei~f~p~Rv~~qD~Tg~pa~vdlaamR~~~~~~g~dp~~inp~vp~dlviDHsv~vd~  138 (896)
T Consensus         4 TlyeK~fD~HvV~---~~E-~~~~LLYIdrHLvHEVTSPQAF---eGLr~----~gR~VR~~~~Tf---ATmDHni~T~~   69 (472)
T TIGR00170         4 TLYEKLFDAHVVY---EAE-GETPLLYIDRHLVHEVTSPQAF---EGLRQ----AGRKVRRVDKTF---ATMDHNIPTQS   69 (472)
T ss_pred             CHHHHHCCCEEEE---CCC-CCCCCEEEECEEEEECCCCHHH---HHHHH----CCCCCCCCCCCE---EEECCCCCCCC
T ss_conf             2111213530577---267-8885145406155401670324---79986----778015468703---23126557554


Q ss_pred             CCCHHHHHHH--------HHHHHHHHHHHHHHHHHHHHHCCCEEEECCCCCCHHHHHHHHHCCCEEEECCCCCEEEEEE-
Q ss_conf             5998899989--------9988754267899998774214880786088762167789863351131036886179830-
Q gi|254780451|r  139 SGNKDAVTRN--------KDLEYQRNEERYRFLKWGQKSFKNFRVVPPGTGICHQINLEYLGQSVWTKNENGENIAYPD-  209 (896)
Q Consensus       139 ~g~~~a~~~n--------~~~e~~rN~Ery~Flkwa~~~f~~~~v~pPG~GI~HQvnlE~la~vv~~~~~~~~~~a~Pd-  209 (896)
T Consensus        70 rknfkslD~~~~~~~a~~Qv~~L~~N~k~f-----Gv~---l~dl~~~~QGIVHv~-------------GPE~GlTLPG~  128 (472)
T TIGR00170        70 RKNFKSLDVNIKDEVAKIQVKELEKNCKEF-----GVK---LFDLSSAEQGIVHVV-------------GPEQGLTLPGM  128 (472)
T ss_pred             CCCHHHHHHHHHHHHHHHHHHHHHHHHHHH-----CCE---EECCCCCCCCEEEEE-------------CCCCCCCCCCC
T ss_conf             310112001331135789999987557871-----932---105778887469986-------------78888538887


Q ss_pred             EEEECCCCCCCCCCCHHHHCCCCHHHHHHHHCCCCCEECCCCEEEEEEECCCCCCCCHHHHHHHHHHHHCCCCCCCEEEE
Q ss_conf             13206887644452012320343489999970775141167289999976778644368899999998410221212799
Q gi|254780451|r  210 TCVGTDSHTTMINALGILGWGVGGIEAEAAMLGCPISMLLPEVVGFEVTGSLQEGVTATDLVLTITQMLRKEGVVSKFVE  289 (896)
Q Consensus       210 tlVGtDSHT~~~galG~la~GVGg~eaea~mlGqp~~~~vPevigv~L~G~L~~gVtakDiiL~i~~~Lr~~Gvvgk~vE  289 (896)
T Consensus       129 TiVCGDSHTsTHGAFGaLAFGIGTSEVEHVLaTQTl~Q~r~K~m~i~V~Gk~~~GiTaKD~iLaiIGk~g~agGTG~ViE  208 (472)
T TIGR00170       129 TIVCGDSHTSTHGAFGALAFGIGTSEVEHVLATQTLKQARAKTMKIEVDGKLAPGITAKDIILAIIGKTGVAGGTGHVIE  208 (472)
T ss_pred             EEEECCCCCHHHHHHHHHHHCCCCCHHHHHHHHHHHHHCCCCEEEEEEEEEECCCCCHHHHHHHHHHHHCCCCCCEEEEE
T ss_conf             58858876302345566651576203233234435642688505899855766888456666654333125887506884


Q ss_pred             EEECCCCCCCHHHHHHHHCCCCCCCCCEEEECCCHHHHHHHHHCCCCHHHHHHHHHHHHHHHCCCCCCCCCCCCCCEEEE
Q ss_conf             96155001787563212000100372037751998999999863999889999998746410236767667886306999
Q gi|254780451|r  290 FFGSGFESMVLADRATIANMAPEYGATCGFFPVDRGTIDYLRLSGRSNSRVDLVEAYTKVQGMWREDIDYEKVAFTKKMK  369 (896)
Q Consensus       290 f~G~gi~~LS~~dRaTIaNMa~E~GAt~gifp~De~T~~YL~~tGR~~~~v~lve~Y~ka~~l~~~~~~d~~a~Y~~vie  369 (896)
T Consensus       209 f~GEai~~lsMe~RMt~CNMaIE~GArAGliaPDEtTF~Y~K--~R~~--aPKG~ef~~AVayWKtL~tD~gA~fD~~i~  284 (472)
T TIGR00170       209 FCGEAIRDLSMEGRMTVCNMAIEAGARAGLIAPDETTFEYVK--GRPH--APKGKEFDKAVAYWKTLKTDEGAKFDTVIT  284 (472)
T ss_pred             CCCHHHHHCCCCCHHHHHHHHHHHHHHCCCCCCCCHHHHHCC--CCCC--CCCCCCHHHHHHHHHHCCCCCCCCCCCEEE
T ss_conf             010686413702100144577886322276288402466207--6888--888776789999875336988872363688


Q ss_pred             EECCCCCCHHCCCCCCCCEEEHHHHHHHHHHHHHHHCCCHHHHHHHCCCCCCCCCCCCCCEEEEEEECCCCCCCHHHHHH
Q ss_conf             98031430122656656413677730116687664001100232102457888887555445753104676545999877
Q gi|254780451|r  370 LDLGNVSPSVAGPRRPESRLSLSEVPSSFVTEMNEYYKKSHTLDEKYPVKGCDFHLKHGDVAIASITSCTNTFNPSVMIG  449 (896)
Q Consensus       370 iDLs~ieP~VAgP~~P~d~v~l~~v~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~l~~g~VvIAaIgSCTNtSnp~~mia  449 (896)
T Consensus       285 l~a~~i~P~vTWGtnPg~vl~v~~~vP~P~~~~dp~~k~~aerAl~YmGL~p~~~l~~ikvd~VFIGSCTNsRieDLR~A  364 (472)
T TIGR00170       285 LEAEDISPQVTWGTNPGQVLPVNEEVPDPKSFADPVKKASAERALAYMGLEPGTPLKDIKVDKVFIGSCTNSRIEDLRAA  364 (472)
T ss_pred             ECCEEECCEEECCCCCCCEEECCCCCCCCCCCCCHHHHHHHHHHHHHHCCCCCCCCEEEEEEEEEEECCCCCHHHHHHHH
T ss_conf             52513155465378998267337888775123784457789999997088988861037750568724556057899999


Q ss_pred             HHHHHHHHHHCCCCCCCCCE-EEEECCCHHHHHHHHHCCCHHHHHHHCCEECCCCCCCCCCCCCCCCCHHHHHCCCCCEE
Q ss_conf             88999889864987586730-79701618999999985885777750530205532242127776883022101136635
Q gi|254780451|r  450 AGLLARNAVRAGLKSKPWVK-TSCAPGSQVSYEYLVQAGLVEYLEALGFSLVGFGCTTCIGNSGALKKEISEVIHQKSLV  528 (896)
Q Consensus       450 AgllAkkAv~~Glkv~p~Vk-t~l~PGS~~V~~~L~~~Gll~~L~~aGf~i~~~GCg~CiGnsG~l~~~i~~~i~~~~l~  528 (896)
T Consensus       365 A~~------~kG~K~A~~v~~alVVPGSg~VK~QAE~EGLDkIF~eAGfEWR~~GCSmCL~MN~D~l~~-------~E-R  430 (472)
T TIGR00170       365 AAV------VKGRKVADNVKLALVVPGSGLVKKQAEKEGLDKIFIEAGFEWREPGCSMCLGMNNDVLDE-------GE-R  430 (472)
T ss_pred             HHH------HCCCCCCCCCCEEEEECCCCHHHHHHHHCCCCHHHHHCCCCCCCCCCCEECCCCCCCCCC-------CC-C
T ss_conf             998------478101543758989578823678873316217888717000146772430577675865-------55-4


Q ss_pred             EEEEECCCCCCCCCCCCCCCCEEECCHHHHHHHHHHCC
Q ss_conf             87863367666654685433100059789999985161
Q gi|254780451|r  529 VAGVLSGNRNFEGRISPDVEANYLLSPPLVVAYALAGN  566 (896)
Q Consensus       529 ~~sV~SgNRNFeGR~~p~~~~~yLaSP~lVvA~AiaG~  566 (896)
T Consensus       431 CAS--TSNRNFEGRQG~~~RT-HLvSPAMAAaAai~Gh  465 (472)
T TIGR00170       431 CAS--TSNRNFEGRQGRGGRT-HLVSPAMAAAAAIAGH  465 (472)
T ss_pred             CCC--CCCCCCCCCCCCCCCC-CCCCHHHHHHHHHCCC
T ss_conf             214--5677765536888663-5440899989861576