>TIGR01145 ATP_synt_delta ATP synthase F1, delta subunit; InterPro: IPR000711 ATPases (or ATP synthases) are membrane-bound enzyme complexes/ion transporters that combine ATP synthesis and/or hydrolysis with the transport of protons across a membrane. ATPases can harness the energy from a proton gradient, using the flux of ions across the membrane via the ATPase proton channel to drive the synthesis of ATP. Some ATPases work in reverse, using the energy from the hydrolysis of ATP to create a proton gradient. There are different types of ATPases, which can differ in function (ATP synthesis and/or hydrolysis), structure (F-, V- and A-ATPases contain rotary motors) and in the type of ions they transport , . F-ATPases (F1F0-ATPases) in mitochondria, chloroplasts and bacterial plasma membranes are the prime producers of ATP, using the proton gradient generated by oxidative phosphorylation (mitochondria) or photosynthesis (chloroplasts). V-ATPases (V1V0-ATPases) are primarily found in eukaryotic vacuoles, catalysing ATP hydrolysis to transport solutes and lower pH in organelles. A-ATPases (A1A0-ATPases) are found in Archaea and function like F-ATPases. P-ATPases (E1E2-ATPases) are found in bacteria and in eukaryotic plasma membranes and organelles, and function to transport a variety of different ions across membranes. E-ATPases are cell-surface enzymes that hydrolyse a range of NTPs, including extracellular ATP. F-ATPases (also known as F1F0-ATPase, or H(+)-transporting two-sector ATPase) (3.6.3.14 from EC) are composed of two linked complexes: the F1 ATPase complex is the catalytic core and is composed of 5 subunits (alpha, beta, gamma, delta, epsilon), while the F0 ATPase complex is the membrane-embedded proton channel that is composed of at least 3 subunits (A-C), nine in mitochondria (A-G, F6, F8). Both the F1 and F0 complexes are rotary motors that are coupled back-to-back. In the F1 complex, the central gamma subunit forms the rotor inside the cylinder made of the alpha(3)beta(3) subunits, while in the F0 complex, the ring-shaped C subunits forms the rotor. The two rotors rotate in opposite directions, but the F0 rotor is usually stronger, using the force from the proton gradient to push the F1 rotor in reverse in order to drive ATP synthesis . These ATPases can also work in reverse to hydrolyse ATP to create a proton gradient. This family represents subunits called delta in bacterial and chloroplast ATPase, or OSCP (oligomycin sensitivity conferral protein) in mitochondrial ATPase (note that in mitochondria there is a different delta subunit, IPR001469 from INTERPRO). The OSCP/delta subunit appears to be part of the peripheral stalk that holds the F1 complex alpha3beta3 catalytic core stationary against the torque of the rotating central stalk, and links subunit A of the F0 complex with the F1 complex. In mitochondria, the peripheral stalk consists of OSCP, as well as F0 components F6, B and D. In bacteria and chloroplasts the peripheral stalks have different subunit compositions: delta and two copies of F0 component B (bacteria), or delta and F0 components B and B (chloroplasts) , . More information about this protein can be found at Protein of the Month: ATP Synthases .; GO: 0046933 hydrogen ion transporting ATP synthase activity rotational mechanism, 0046961 hydrogen ion transporting ATPase activity rotational mechanism, 0015986 ATP synthesis coupled proton transport, 0016469 proton-transporting two-sector ATPase complex.

Probab=99.86  E-value=2.9e-21  Score=160.91  Aligned_cols=171  Identities=30%  Similarity=0.480  Sum_probs=165.5

Q ss_pred             HHHHHHHHHHHHHHHCCCHHHHHHHHHHHHHHHCCCHHHHHHHHCCCCCHHHHHHHHHHHHHCCCCCHHHHHHHHHHHHH
Q ss_conf             55799999999998639989999999999999506998999851845220456578899862046643468999998533
Q gi|254780618|r   11 VPGRYSHSLFGVSNEEGVLDIVSDDISRLEALLMESADLRFFIHNPLFSMKDRRSVIDDLVKDAHFCAITANFLRILVAN   90 (186)
Q Consensus        11 ia~~YA~AL~~~a~e~~~l~~v~~~l~~i~~~~~~~~~l~~~l~sp~i~~~~K~~ii~~i~~~~~~~~~~~~fl~~L~~~   90 (186)
T Consensus         1 ~~~~y~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~p~~~~~~~~~~~~~~~~~-~~~~~~~~~~~~~~~~   79 (172)
T TIGR01145         1 VARPYAEALFELANEKSSLEEWGEELNFVKEVLKNDKELKKLLSGPLLSAEKKKELIKNVFGE-QLDESGLNLLLLLVEN   79 (172)
T ss_pred             CCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCCCCHHHHHHHHHHHHHH-HHHHHHHHHHHHHHHC
T ss_conf             950578999998863668999999999999996222889987515453167889999998521-1024677888877622


Q ss_pred             HCCCHHHHHHHHHHHHHHHHHHHHHHHEEECCCCCHHHHHHHHHHHHHHHCC-EEEEEEEECCCHHCEEEEEECCEEEEH
Q ss_conf             2011014249999999888765553310105689989999999999997489-589999997414023899979978502
Q gi|254780618|r   91 GRLSVLPAIIKSFRAVCMYYRNEVMAFVRAFSGLSLLQQNKLGECLEKIVGK-TVILDVMEDSALMGGFIVEIGAHQIDA  169 (186)
Q Consensus        91 ~r~~~l~~I~~~f~~~~~~~~~~~~~~V~sa~~ls~~~~~~i~~~l~~~~~~-~i~l~~~vD~slIGG~~i~vg~~~iD~  169 (186)
T Consensus        80 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~g~~~~~g~~~~d~  159 (172)
T TIGR01145        80 GRLAALPDILDEFLKLSYEAEATADVEVISAVPLTEEQLAKLAEKLEKKTGAAKVKLNLKVDKDLLGGLIIKIGDRVIDG  159 (172)
T ss_pred             CHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCHHHHH
T ss_conf             32577799999999998875345566665421002778999999999876565555542210345500131002212202


Q ss_pred             HHHHHHHHHHHHH
Q ss_conf             7999999999985
Q gi|254780618|r  170 SLRTQLLKLGCIL  182 (186)
Q Consensus       170 Si~~kL~~l~~~l  182 (186)
T Consensus       160 ~~~~~l~~~~~~l  172 (172)
T TIGR01145       160 SVRGQLKRLSDLL  172 (172)
T ss_pred             HHHHHHHHHHHCC
T ss_conf             5667777654119