>TIGR01129 secD protein-export membrane protein SecD; InterPro: IPR005791 Secretion across the inner membrane in some Gram-negative bacteria occurs via the preprotein translocase pathway. Proteins are produced in the cytoplasm as precursors, and require a chaperone subunit to direct them to the translocase component. . From there, the mature proteins are either targeted to the outer membrane, or remain as periplasmic proteins. The translocase protein subunits are encoded on the bacterial chromosome. The translocase itself comprises 7 proteins, including a chaperone protein (SecB), an ATPase (SecA), an integral membrane complex (SecCY, SecE and SecG), and two additional membrane proteins that promote the release of the mature peptide into the periplasm (SecD and SecF) . The chaperone protein SecB is a highly acidic homotetrameric protein that exists as a "dimer of dimers" in the bacterial cytoplasm. SecB maintains preproteins in an unfolded state after translation, and targets these to the peripheral membrane protein ATPase SecA for secretion . Together with SecY and SecG, SecE forms a multimeric channel through which preproteins are translocated, using both proton motive forces and ATP-driven secretion. The latter is mediated by SecA. The structure of the Escherichia coli SecYEG assembly revealed a sandwich of two membranes interacting through the extensive cytoplasmic domains . Each membrane is composed of dimers of SecYEG. The monomeric complex contains 15 transmembrane helices. This entry describes the SecD family of transport proteins. Members of this family are highly variable in length immediately after the well-conserved motif LGLGLXGG at the amino-terminal end of this model. Archaeal homologs are not included in the seed. SecD from Mycobacterium tuberculosis has a long Pro-rich insert. ; GO: 0015450 P-P-bond-hydrolysis-driven protein transmembrane transporter activity, 0006886 intracellular protein transport, 0009276 1-2nm peptidoglycan-based cell wall.

Probab=100.00 E-value=0 Score=469.35 Aligned_cols=455 Identities=42% Similarity=0.706 Sum_probs=414.6 Q ss_pred CCEECCCCEEEEEEECHHHHHHHHHHHHHHHHHHHHHHCCCEEEEEEEECCEEEEEECCCCCHHHHHHHHHHHHHHHHHH Q ss_conf 11012785499998433675189887899999998620591265898319979999669767899999999999987441 Q gi|254780925|r 46 LGLDLRGGSHLVLEVDEDDFVNGFLQMYSDELRSFLKKEGIGVFSMRQIQNKITLSFADSRFKENIADKVTLFLQGVNSK 125 (833) Q Consensus 46 lGLDL~GG~~v~~~~~~~~~~~~~v~~~~e~l~~~v~~~~~~~sts~~~~~~I~V~f~~~~d~~~a~~~v~~~v~~~~~~ 125 (833) T Consensus 1 LGLDLrGG~~~~~~v~~~~~~~~~~e~l~~~lR~~Lrk~~i~~~~~~~~~~~~~i~l~d~~~~~~a~~~~~~-------- 72 (522) T TIGR01129 1 LGLDLRGGARLLLEVDMSEALEKRYEQLADSLRKNLRKEKINYKAVRSTKNGLSIELLDAKEVKKAKKVLRK-------- 72 (522) T ss_pred CCCCCCCCEEEEEEECCCHHHHHHHHHHHHHHHHHHHHHCCCEEEEEECCCCEEEEECCHHHHHHHHHHHHC-------- T ss_conf 985021471899983262675457888789999999970783000012277138997288999999999860-------- Q ss_pred CCCCCCCCCEECCCCCCCEEEEEECCCCCCCHHHHHHHHHHHHHHHHHHCCCCCCCCCCC-CCCCCCCCCCC--CCHHHH Q ss_conf 765445773142367751168751345665126898778887631123103465421012-57301233346--898898 Q gi|254780925|r 126 LNVDPKKNLLVTTTEKEISIVLSQNNIDQVISHAIEQSMEIIRQRIDQIGISESTIQRLG-SHRILIQLPGE--QDPSRL 202 (833) Q Consensus 126 lp~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~l~~~~~~~~~~~-~~~~~~~~~~~--~~~~~~ 202 (833) T Consensus 73 ---~~p~~~i~~~g~~~~~~~ls~~~~~~~~~~~~~~~~~ilr~Rvn~lGv~EP~v~~~Gd~~rI~VelPG~T~~D~~ra 149 (522) T TIGR01129 73 ---IHPELEITEEGDKSVVLKLSEAEVNAARKDALEQVITILRNRVNALGVAEPVVQRQGDKDRIVVELPGVTLTDTSRA 149 (522) T ss_pred ---CCCCEEEEECCCCEEEEECCHHHHHHHHHHHHHHHHHHHHHHHHHHCCCCCEEEEECCCCEEEEEECCCCCCCHHHH T ss_conf ---49826985137727999748687534208999999999999998616777648872477468998478676548999 Q ss_pred HHHCCCHHHHHHHHHHCCCCC--------------------C-----CCCC---CCCCCCCCCCC------EEECCCCC- Q ss_conf 541269899988874001234--------------------4-----4555---65334666651------00026750- Q gi|254780925|r 203 RQLLGTTAKMSFHKVLPNNSK--------------------K-----GFMF---GVRFLRDSDGN------QYLVEDKV- 247 (833) Q Consensus 203 ~~~~~~~~~~~~~~~~~~~~~--------------------~-----~~~~---~~~~~~~~~~~------~~~~~~~~- 247 (833) T Consensus 150 k~Ilg~tA~L~F~~V~~~~~~~~l~hy~~~~ag~f~a~~~~~~~~~~~~~~~~L~~~~~~~~~~~~~~~~~~~l~~k~~e 229 (522) T TIGR01129 150 KDILGGTATLEFRLVDDEATSKDLDHYKQLEAGSFQAIEKEAEDALKGNVPAKLGSELLKSRSGDPEDRLTYYLLKKEPE 229 (522) T ss_pred HHHCCCCCEEEEEEECCCCCCCHHHHHHHHCCCCCCCHHHHHHHHCCCCCHHHCCCEEECCCCCCCCCEEEEEEEECCCC T ss_conf 98606561578997067866523688752002474203677886147875013881673588998753156678731436 Q ss_pred -----EEECCEECCCCCCCCCCCCCC-CEECCCCCCCCCHHHCCCHHHCC---CCCCCCCCCC---------------CC Q ss_conf -----120211101111223333221-00001233221011001000001---2322110000---------------00 Q gi|254780925|r 248 -----EISGIHLNGATANFDPKTHKP-VVDISFDEMGARRFFEVTRDNIG---KPLAVVLDGR---------------VL 303 (833) Q Consensus 248 -----~~~g~~~~~~~~~~~~~~~~~-~~~~~~~~~~~~~~~~~~~~~~~---~~~~~~~~~~---------------~~ 303 (833) T Consensus 230 ~~~~~~ltG~~i~dA~~s~d~~~G~py~V~f~Ld~~G~~iF~~~T~~~~gt~~krlAiVlD~~KDGK~dNG~~LK~E~v~ 309 (522) T TIGR01129 230 SFKDLVLTGDHITDATVSVDQRSGQPYVVSFSLDSEGAKIFGDFTQANIGTETKRLAIVLDNKKDGKKDNGKVLKQEEVV 309 (522) T ss_pred CCCCEEEEHHHCCCCCCCCCCCCCCCEEEEEEECHHHHHHHHHHHHHCCCCCCCEEEEEEECCCCCCCCCCEEEECEEEE T ss_conf 76661661101245545316889965489998855688999987521128997235789704436842037143010357 Q ss_pred CCCCEEECCCCCCCCCCH--HHHHHHHHHHHHHHHHHCCCCCCCCCCCCEEEEECCCHHHHHHHHHHHHHHHHHHHHHHH Q ss_conf 133200012333443210--135788765444321100001223333320110011024578888889999999999997 Q gi|254780925|r 304 TAPVINQAIPSGKAQISG--NFTIETAGILAAMLRAGSLPIKLNIVEERNVGADLGSDSIYKGTCAIVAGLVLIVLFMIV 381 (833) Q Consensus 304 ~~~~~~~~~~~~~~~~~~--~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~lvvvvv~l~l 381 (833) T Consensus 310 SaP~I~~~i~~g~~~I~G~P~Ft~~eA~dLA~~LR~GaLP~~~~~~e~r~iGP~LG~d~i~~G~~A~~~Gl~lV~~FM~~ 389 (522) T TIGR01129 310 SAPVIREAITGGSGQITGDPNFTAEEANDLALLLRSGALPAPLQILEERTIGPSLGADSIEAGIKAGLIGLVLVLVFMIV 389 (522) T ss_pred ECCEEEEEECCCCEEEECCCCCCHHHHHHHHHHHHHHHCCCCCEEEEEEEECHHHHHHHHHHHHHHHHHHHHHHHHHHHH T ss_conf 42210013158855884488998899999999987751254607851022045643899999999999999999999999 Q ss_pred HCCCCHHHHHHHHHHH--HHHHHHHHHHHH-HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCCHHHHHHHHHHH Q ss_conf 3032035666677777--788999999998-7665578999999865335789999999876310255579999999999 Q gi|254780925|r 382 LYGKWGLVADFSIFLN--VILTLALLSLLG-ATLTLPSIAGIVLGIGLAVDSNILVNERIREENRKNQSVFCSLDMGFSR 458 (833) Q Consensus 382 ~~~r~~li~~iaIpis--ii~tl~~l~~~G-~tLn~~sl~gl~~~~g~~vd~~i~~~e~~~~~~~~~~~~~~a~~~~~~~ 458 (833) T Consensus 390 yY~~~G~~A~~aL~~n~m~~~ila~ls~~~gaTLTLPGIAGliLTiG~AVDaNVlIyERIkEElr~G~s~~~Ai~~Gf~r 469 (522) T TIGR01129 390 YYRLFGLIAAIALVINGMIVLILAVLSAFGGATLTLPGIAGLILTIGMAVDANVLIYERIKEELRLGKSVQQAIEAGFER 469 (522) T ss_pred HHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCEECHHHHHHHHHHHHHHHHEEEEEEECHHHHHHCCCCHHHHHHHHHHH T ss_conf 97678899999999999999999999852675034056899998886551001367402388774789578999888888 Q ss_pred HHHHHHHHHHHHHHHHHHHHHCCCCCCCHHHHHHHHHHHHHHHHHHHHHHHHH Q ss_conf 99999976556899988876145544311478877888998777751139999 Q gi|254780925|r 459 AYSTIFDSNITALIATVVLFFFGGGAVRGFAITMGLSILISMFTAISIVRAMM 511 (833) Q Consensus 459 ~~~~i~~~~~t~~~~~~~l~~~~~~~~~~f~~~~~~~~~~~~~~~~~~~~~~~ 511 (833) T Consensus 470 A~~~I~DaN~Ttliaa~~Ly~~GtG~vKGFA~tl~iGi~~S~fta~~~~R~l~ 522 (522) T TIGR01129 470 AFSTILDANITTLIAALILYVFGTGPVKGFAVTLAIGIIASLFTALVVTRLLL 522 (522) T ss_pred HHHHHHHHHHHHHHHHHHHHHHHCCCHHHHHHHHHHHHHHHHHHHHHHHHHCC T ss_conf 99999997399999999998860252257889899999999999989875409

HHsearch alignment for GI: 254780925 and conserved domain: TIGR01129