>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=97.52  E-value=0.0015  Score=45.44  Aligned_cols=135  Identities=20%  Similarity=0.366  Sum_probs=76.8

Q ss_pred             CCCCCCCHHHHHHHCCCCCCCCEEEEECCCCCCHHHHHHHHHHHHHCCCCCEEEEECCCCH----HHHHHHHHHCCCCCC
Q ss_conf             6323781248888659857870899954987518899999999985039819999864630----478888752015775
Q gi|254780334|r   70 SRIQTHIDELDRVTGGGFVRGSVILVGGDPGIGKSTLLMQTAASLAYKKHRITYVSGEEAI----GQIRLRAQRLNTINS  145 (479)
Q Consensus        70 ~Ri~TGi~eLDrvLGGGl~~Gs~~Li~G~PGvGKSTL~Lqia~~~a~~g~~vlYvS~EEs~----~Qi~~Ra~Rl~~~~~  145 (479)
T Consensus         9 ~~Y~~~~~aL~~v-~l~i~kG~F~FLtG~SGAGKttLLKLl~~~~~P~~-G~v~~~G~~~~~l~~~~~P~LRR~iGvvFQ   86 (215)
T TIGR02673         9 KSYPGGVEALHDV-SLHIRKGEFLFLTGPSGAGKTTLLKLLYGALTPSR-GQVRVAGEDVSRLRGRQLPLLRRRIGVVFQ   86 (215)
T ss_pred             EECCCCCHHHCCC-CEEECCCCEEEEECCCCCCHHHHHHHHHHHCCCCC-CEEEECCEECCCCCCCCCHHHHCCCCEEEE
T ss_conf             0078985113276-44752774078872778617899999985269875-808888740466775643122131543784


Q ss_pred             CHHEECCCC-HHHH-----------------------------------------------HHHHHHCCCCCEEEECHHH
Q ss_conf             100003478-8999-----------------------------------------------9999731698289972168
Q gi|254780334|r  146 SVYIAIETN-VEDI-----------------------------------------------IATLITNEKPDLVIIDSIQ  177 (479)
Q Consensus       146 ~i~~~~e~~-l~~i-----------------------------------------------l~~~i~~~~~~~vVIDSIQ  177 (479)
T Consensus        87 Df~LL~~rTv~eNVAl~L~V~G~~~~~I~~rV~~~L~~vGL~~K~~~~P~~LSGGEQQRvaIARAiv-~~P~lLLADEP-  164 (215)
T TIGR02673        87 DFRLLPDRTVYENVALPLEVRGKKKREIQRRVEAALRLVGLEHKADAFPEQLSGGEQQRVAIARAIV-NSPELLLADEP-  164 (215)
T ss_pred             CCCCCCCCCHHHHCCHHHHCCCCCCHHHHHHHHHHHHHCCCHHHHHCCCCCCCCCHHHHHHHHHHHH-CCCCEEEEECC-
T ss_conf             2211011661341121011138880336789999998528632542572100472578888876530-48967987788-


Q ss_pred             HHHHHHHCCCCCCHHHHHHHHHHHHHHHHHCCCEEEEEEE
Q ss_conf             7665420445563679999999999975307978999863
Q gi|254780334|r  178 TLWSQTAESSPGTVIQVRTSVQAMIQYAKKNGVAMVLVGH  217 (479)
Q Consensus       178 tl~~~~~~s~~GsvsQvre~~~~L~~~AK~~~i~viligh  217 (479)
T Consensus       165 ---TGNLD~------~~~~~iL~ll~~~n~~GtTV~vATH  195 (215)
T TIGR02673       165 ---TGNLDP------ALSERILDLLKELNKRGTTVIVATH  195 (215)
T ss_pred             ---CCCCCH------HHHHHHHHHHHHHHHCCCEEEEECC
T ss_conf             ---999687------6789999999998418987999807