Protein-export membrane protein; Part of the Sec protein translocase complex. Interacts with the SecYEG preprotein conducting channel. SecDF uses the proton motive force (PMF) to complete protein translocation after the ATP-dependent function of SecA.

Ribonuclease P protein component; RNaseP catalyzes the removal of the 5'-leader sequence from pre-tRNA to produce the mature 5'-terminus. It can also cleave other RNA substrates such as 4.5S RNA. The protein component plays an auxiliary but essential role in vivo by binding to the 5'-leader sequence and broadening the substrate specificity of the ribozyme.

Preprotein translocase subunit; The central subunit of the protein translocation channel SecYEG. Consists of two halves formed by TMs 1-5 and 6-10. These two domains form a lateral gate at the front which open onto the bilayer between TMs 2 and 7, and are clamped together by SecE at the back. The channel is closed by both a pore ring composed of hydrophobic SecY resides and a short helix (helix 2A) on the extracellular side of the membrane which forms a plug. The plug probably moves laterally to allow the channel to open. The ring and the pore may move independently.

Putative protein-export membrane protein; Involved in protein export. Participates in an early event of protein translocation; Belongs to the SecG family.

Preprotein translocase SecE subunit; Essential subunit of the Sec protein translocation channel SecYEG. Clamps together the 2 halves of SecY. May contact the channel plug during translocation.

Conserved hypothetical protein Cj0959c; Could be involved in insertion of integral membrane proteins into the membrane; Belongs to the UPF0161 family.

Hypothetical protein Cj0957c; Original (2000) note: Cj0957c, unknown, len: 272 aa; 42.5% identity to HP1451. Functional classification -Conserved hypothetical proteins.

ATP synthase F0 sector C subunit; F(1)F(0) ATP synthase produces ATP from ADP in the presence of a proton or sodium gradient. F-type ATPases consist of two structural domains, F(1) containing the extramembraneous catalytic core and F(0) containing the membrane proton channel, linked together by a central stalk and a peripheral stalk. During catalysis, ATP synthesis in the catalytic domain of F(1) is coupled via a rotary mechanism of the central stalk subunits to proton translocation.

Original (2000) note: Cj0961c, rpmH, 50S ribosomal protein L34, len: 44 aa; highly similar to many e.g. RL34_ECOLI 50S ribosomal protein L34 (46 aa), fasta scores; opt: 196 z-score: 321.0 E(): 1.4e-10, 65.9% identity in 44 aa overlap. 90.9% identity to HP1447. Contains PS00784 Ribosomal protein L34 signature, and Pfam match to entry PF00468 L34, Ribosomal protein L34; Updated (2006) note: Characterised in Escherichia coli with acceptable identity score, so putative not added to product function. Functional classification - Ribosomal protein synthesis and modification; PMID:6329723.