>TIGR00327 secE_euk_arch protein translocase SEC61 complex gamma subunit, archaeal and eukaryotic; InterPro: IPR008158 This family is the protein translocase SEC61 complex gamma subunit of the archaeal and eukaryotic type. It does not hit bacterial SecE proteins. Sec61 is required for protein translocation in the endoplasmic reticulum. The Sec61 complex (eukaryotes) or SecY complex (prokaryotes) forms a conserved heterotrimeric integral membrane protein complex and forms a protein-conducting channel that allows polypeptides to be transferred across (or integrated into) the endoplasmic reticulum (eukaryotes) or across the cytoplasmic membrane (prokaryotes) , . This complex is itself a part of a larger translocase heterotrimeric complex composed of alpha, beta and gamma subunits. The channel is a passive conduit for polypeptides. It therefore has to associate with other components that provide a driving force. The partner proteins in bacteria and eukaryotes differ. In bacteria, the translocase complex comprises 7 proteins , including a chaperone protein (SecB) an ATPase (SecA), an integral membrane complex (SecY, SecE and SecG), and two additional membrane proteins that promote the release of the mature peptide into the periplasm (SecD) and SecF. The SecA ATPase interacts dynamically with the SecYEG integral membrane components to drive the transmembrane movement of newly synthesized preproteins . In yeast (and probably in all eukaryotes), the full translocase comprises another membrane protein subcomplex (the tetrameric Sec62/63p complex), and the lumenal protein BiP, a member of the Hsp70 family of ATPases. BiP promotes translocation by acting as a molecular ratchet, preventing the polypeptide chain from sliding back into the cytosol .; GO: 0015450 P-P-bond-hydrolysis-driven protein transmembrane transporter activity, 0015031 protein transport, 0016020 membrane.

Probab=92.13  E-value=0.81  Score=25.36  Aligned_cols=55  Identities=20%  Similarity=0.199  Sum_probs=42.0

Q ss_pred             HHHHHHHHHHHHHHHHHHCCCCCHHH---HHHHHHHHHHHHHHHHHHHHHHHHHHHHH
Q ss_conf             56559999999999998734898899---99999999999999999999999999999
Q gi|254780149|r    4 NRLAVLNFFKQVRDESKKIFWPSRSE---VLVSVIVVIIMLSISSVFFLVIDQSIGWL   58 (67)
Q Consensus         4 ~~~~i~~f~~ev~~ElkkV~WPt~~e---~~~~T~~Vi~~~~i~~~~i~~~D~~~~~~   58 (67)
T Consensus         2 ~~e~~~~f~~e~~~vL~~~kKP~~~EY~~v~Kv~~~g~~~vG~iGf~I~i~~~~l~G~   59 (61)
T TIGR00327         2 KIEEVKEFIKESKRVLKVAKKPDKEEYLKVAKVTGIGIIIVGIIGFIIKIIAELLKGV   59 (61)
T ss_pred             CHHHHHHHHHHHHHHHHHCCCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCC
T ss_conf             2357899999999999970699878899999999999999989999999999980311