>cd06550 TM_ABC_iron-siderophores_like Transmembrane subunit (TM), of Periplasmic Binding Protein (PBP)-dependent ATP-Binding Cassette (ABC) transporters involved in the uptake of siderophores, heme, vitamin B12, or the divalent cations Mg2+ and Zn2+. PBP-dependent ABC transporters consist of a PBP, two TMs, and two cytoplasmic ABCs, and are mainly involved in importing solutes from the environment. The solute is captured by the PBP which delivers it to a gated translocation pathway formed by the two TMs. The TMs are bundles of alpha helices that transverse the cytoplasmic membrane multiple times. The two ABCs bind and hydrolyze ATP and drive the transport reaction. Each TM has a prominent cytoplasmic loop which contacts an ABC and represents a conserved motif. The two TMs form either a homodimer (e.g. in the case of the BtuC subunits of the Escherichia coli BtuCD vitamin B12 transporter), a heterodimer (e.g. the TroC and TroD subunits of the Treponema pallidum general transition metal

Probab=100.00 E-value=1.8e-35 Score=209.43 Aligned_cols=246 Identities=24% Similarity=0.385 Sum_probs=216.9 Q ss_pred HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCC-----HHHHHHHHHHHHHHHHHHCC--CCC Q ss_conf 99999999999998788999999768996445899999999999972211-----33458899999999997312--334 Q gi|254780540|r 18 QNSFIITVIVVIPMSVLSCFIILKNQSFAGEAISHSVLPGIVLSHMAGIP-----LEIGAFIAGMICTLSAGYLK--EKS 90 (277) Q Consensus 18 ~~all~~~l~~~~~~~lG~~vv~rr~~~~~~alsH~al~Gial~~l~g~~-----~~lga~~~~ll~a~li~~l~--~r~ 90 (277) T Consensus 2 l~a~l~G~~L~~aG~~~Q~~~rN~la~p~~lGis~gA~lg~~l~~ll~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 81 (261) T cd06550 2 LAALLVGAALAVSGAILQSLTRNRLASPSILGISHGALLGVVLALLLGIGLSNYALGAFAFAGALAIALLVLLLASRGGL 81 (261) T ss_pred HHHHHHHHHHHHHHHHHHHHCCCCCCCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCC T ss_conf 99999999999999999998089887960858999999999999999877778999999999999999999999973798 Q ss_pred CCCHHHHHHHHHHHHHHHHHHHHHHCC--CCCHHHHHHHHHHHHCCHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCCHHH Q ss_conf 430244789899999999998632102--441034577631753466552578998899999999863343113466889 Q gi|254780540|r 91 YFQEDLVLSIVFSGMFAIGIILILKVH--SSLHFSHILLGDMLGISKSDIITTAFFAFISISFLILKKNDLLLMIFDPMH 168 (277) Q Consensus 91 ~~~~d~~igiv~~~~~algill~s~~~--~~~~l~~~LfG~il~v~~~dv~~~~i~~~~~l~~~~~~~r~l~~~sfD~~~ 168 (277) T Consensus 82 ~~~~liL~Gi~is~~~~a~~~~l~~~~~~~~~~~~~wl~Gs~~~~~~~~~~~~~~~~~i~~~~~~~~~~~l~~l~~~~~~ 161 (261) T cd06550 82 SPSKLILIGIVLSAFFSAGVILISLLSDDSLQDLNIWLFGSILGVTWEDLLILLIILLLVLLLLLLLSRKLNLLTFDEDL 161 (261) T ss_pred CHHHHHHHHHHHHHHHHHHHHHHHHHCCHHHHHHHHHHHCCCCCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCHHH T ss_conf 73999999999999999999999874767689999998356457879999999999999999999999999999789899 Q ss_pred HHHHCCCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCHHHHHHHHHHHHHHHHHHHHHHHHHH-- Q ss_conf 976188742356699999999999999898999999999987789985308889999999999999999999999995-- Q gi|254780540|r 169 AHSMQIPIKLLHYNFLIVLSLIIVISLKSIGIILPPAVLVLPGATAFLLSKHHTTMILLSVIISVVCTLVGIYISFFI-- 246 (277) Q Consensus 169 A~~~Gi~v~~~~~~~~~lial~v~~~v~~vG~llv~alli~Paa~A~~~s~s~~~~i~~s~~ig~~~~~~G~~lS~~~-- 246 (277) T Consensus 162 A~~lGi~v~~~~~~~l~l~~~~~~~~v~~vG~i~fvGL-i~P~iar~l~~~~~~~~l~~s~l~G~~l~~~~d~i~r~~~~ 240 (261) T cd06550 162 AKSLGINVNLLRLLLLLLVALLVVAAVALVGVILFVGL-IAPHLARRLFGRSHRYLLPLSALLGAILLLLGDLLSRTLLP 240 (261) T ss_pred HHHCCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH-HHHHHHHHHHCCCCHHHHHHHHHHHHHHHHHHHHHHHHCCC T ss_conf 88769969999999999999999999998479999999-99999999848884439999999999999999999988366 Q ss_pred -CCCCHHHHHHHHHHHHHH Q ss_conf -788189999999999999 Q gi|254780540|r 247 -NSAAAPTVVILMAIFFVV 264 (277) Q Consensus 247 -~~p~g~~Iv~~~~~~~~~ 264 (277) T Consensus 241 ~~~p~g~v~~liG~p~fl~ 259 (261) T cd06550 241 SELPVGPVTALLGAPYFLY 259 (261) T ss_pred CCCCHHHHHHHHHHHHHHH T ss_conf 5640999999999999998

HHsearch alignment for GI: 254780540 and conserved domain: cd06550