>TIGR02673 FtsE cell division ATP-binding protein FtsE; InterPro: IPR005286 ABC transporters belong to the ATP-Binding Cassette (ABC) superfamily, which uses the hydrolysis of ATP to energize diverse biological systems. ABC transporters are minimally constituted of two conserved regions: a highly conserved ATP binding cassette (ABC) and a less conserved transmembrane domain (TMD). These regions can be found on the same protein or on two different ones. Most ABC transporters function as a dimer and therefore are constituted of four domains, two ABC modules and two TMDs. ABC transporters are involved in the export or import of a wide variety of substrates ranging from small ions to macromolecules. The major function of ABC import systems is to provide essential nutrients to bacteria. They are found only in prokaryotes and their four constitutive domains are usually encoded by independent polypeptides (two ABC proteins and two TMD proteins). Prokaryotic importers require additional extracytoplasmic binding proteins (one or more per systems) for function. In contrast, export systems are involved in the extrusion of noxious substances, the export of extracellular toxins and the targeting of membrane components. They are found in all living organisms and in general the TMD is fused to the ABC module in a variety of combinations. Some eukaryotic exporters encode the four domains on the same polypeptide chain . The ABC module (approximately two hundred amino acid residues) is known to bind and hydrolyze ATP, thereby coupling transport to ATP hydrolysis in a large number of biological processes. The cassette is duplicated in several subfamilies. Its primary sequence is highly conserved, displaying a typical phosphate-binding loop: Walker A, and a magnesium binding site: Walker B. Besides these two regions, three other conserved motifs are present in the ABC cassette: the switch region which contains a histidine loop, postulated to polarize the attaching water molecule for hydrolysis, the signature conserved motif (LSGGQ) specific to the ABC transporter, and the Q-motif (between Walker A and the signature), which interacts with the gamma phosphate through a water bond. The Walker A, Walker B, Q-loop and switch region form the nucleotide binding site , , . The 3D structure of a monomeric ABC module adopts a stubby L-shape with two distinct arms. ArmI (mainly beta-strand) contains Walker A and Walker B. The important residues for ATP hydrolysis and/or binding are located in the P-loop. The ATP-binding pocket is located at the extremity of armI. The perpendicular armII contains mostly the alpha helical subdomain with the signature motif. It only seems to be required for structural integrity of the ABC module. ArmII is in direct contact with the TMD. The hinge between armI and armII contains both the histidine loop and the Q-loop, making contact with the gamma phosphate of the ATP molecule. ATP hydrolysis leads to a conformational change that could facilitate ADP release. In the dimer the two ABC cassettes contact each other through hydrophobic interactions at the antiparallel beta-sheet of armI by a two-fold axis , , , , , . Proteins known to belong to this family are classified in several functional subfamilies depending on the substrate used (for further information see http://www.tcdb.org/tcdb/index.php?tc=3.A.1). FtsE is an ABC transporter ATP-binding protein. This protein and its permease partner FtsX, localize to the cell division site. In a number of species, the ftsEX gene pair is located next to ftsY, which encodes the signal recognition particle-docki ng protein.; GO: 0005524 ATP binding, 0051301 cell division.

Probab=96.13  E-value=0.037  Score=33.77  Aligned_cols=164  Identities=16%  Similarity=0.202  Sum_probs=94.1

Q ss_pred             EECCHHHCCCEEEEECCCCCHHHHHHHHHHHHHHHCCHHHEEEEEECCC--------------CCEECCCCCCCCEEEEE
Q ss_conf             2112011484699707875344799999999998568011079997234--------------21000125775200004
Q gi|254780606|r  405 VIADLANMPHILVAGTTGSGKSVAINTMIMSLLYRLRPDECRMIMVDPK--------------MLELSVYDGIPHLLTPV  470 (744)
Q Consensus       405 ~~~dl~~~PH~lvaG~TgsGKS~~l~~~i~sl~~~~~p~~~~~~liD~k--------------~~~~~~~~~~ph~~~~v  470 (744)
T Consensus        21 v~l~i~kG~F~FLtG~SGAGKttLLK-Ll~~~~-~P~~G~v~~~G~~~~~l~~~~~P~LRR~iGvvFQDf~LL~~r-T-v   96 (215)
T TIGR02673        21 VSLHIRKGEFLFLTGPSGAGKTTLLK-LLYGAL-TPSRGQVRVAGEDVSRLRGRQLPLLRRRIGVVFQDFRLLPDR-T-V   96 (215)
T ss_pred             CCEEECCCCEEEEECCCCCCHHHHHH-HHHHHC-CCCCCEEEECCEECCCCCCCCCHHHHCCCCEEEECCCCCCCC-C-H
T ss_conf             64475277407887277861789999-998526-987580888874046677564312213154378422110116-6-1


Q ss_pred             EECHHHHHHHHHHHHHHHHHH-HHHHHHCCCCCHHHHH---------HHHHHHHCCCCCCCCCCCCCCCEEEEEHHHHHH
Q ss_conf             444178768999999866769-9999980778679999---------988642026776665432338679998445687
Q gi|254780606|r  471 VTNPKKAVMALKWAVREMEER-YRKMSHLSVRNIKSYN---------ERISTMYGEKPQGCGDDMRPMPYIVIIVDEMAD  540 (744)
Q Consensus       471 ~~~~~~~~~~l~~~~~em~~r-~~~~~~~~~~~i~~~n---------~~~~~~~~~~~~~~~~~~~~~p~ivvviDE~a~  540 (744)
T Consensus        97 ~eNVAl~L~V~G~~~~~I~~rV~~~L~~vGL~~K~~~~P~~LSGGEQQRvaIARAiv~---------~P~lL-LADEPT-  165 (215)
T TIGR02673        97 YENVALPLEVRGKKKREIQRRVEAALRLVGLEHKADAFPEQLSGGEQQRVAIARAIVN---------SPELL-LADEPT-  165 (215)
T ss_pred             HHHCCHHHHCCCCCCHHHHHHHHHHHHHCCCHHHHHCCCCCCCCCHHHHHHHHHHHHC---------CCCEE-EEECCC-
T ss_conf             3411210111388803367899999985286325425721004725788888765304---------89679-877889-


Q ss_pred             HHHHCCHHHHHHHHHHHHHHHCCEEEEEEEECCCCCCCCHHHHHHCC-CCEEE
Q ss_conf             67531035899999999964201358999851654444146788505-63057
Q gi|254780606|r  541 LMMVAGKEIEGAIQRLAQMARAAGIHLIMATQRPSVDVITGTIKANF-PIRIS  592 (744)
Q Consensus       541 l~~~~~~~~e~~~~~la~~~ra~GihlilatQrp~~~vi~~~ik~n~-~~ri~  592 (744)
T Consensus       166 --GNLD~~~~~~iL~ll~~~n~~GtTV~vATHD~~-------L~~~~P~~R~~  209 (215)
T TIGR02673       166 --GNLDPALSERILDLLKELNKRGTTVIVATHDLE-------LVERVPAHRVL  209 (215)
T ss_pred             --CCCCHHHHHHHHHHHHHHHHCCCEEEEECCCHH-------HHHCCCCCCEE
T ss_conf             --996876789999999998418987999807879-------98437899778