Table 15.

Classification of cellular macromolecular export systems (excluding porins)

SubstrateTC no.Family(ies)Energy sourceOrganismal group
VII.A. Carbohydrates
 Capsular polysaccharide3.A.1.101.1ABCATPB
 Exopolysaccharide9.A.1.2.1–2PSTATP/PMF?B
 β-Glucan3.A.1.108.1ABCATPG− B
 Lipooligosaccharide2.A.6.3.1RNDPMFG− B
 Lipooligosaccharide3.A.1.102.1ABCATPG− B
 Lipopolysaccharide3.A.1.103.1ABCATPG− B
 Lipopolysaccharide9.A.1.1.1PSTPMF?G− B
 Teichoic acid3.A.1.104.1ABCATPG+ B
VII.B. Proteins
 Autolysins, nucleases1.A.28–1.A.43HolinsNoneB, phage
 Proteins (bacterial)1.A.22.1.1MscLNoneB
 Proteins (mitochondrial)9.A.5.1.1Oxa1?Y (mito)
 Proteins (mitochondrial)1.A.21.1.1Bcl-2NoneAn (mito)
 Protein toxins1.C.7; 1.C.8DT; BTTNoneB
 Proteins (redox)2.A.64TatPMFB
 Proteins and peptides (bacteriocidin, bacteriocins, colicin V, competence factors, cyclolysin, α-hemolysin, nisin, pediosin PA-1, proteases, S-layer proteins, subtilin, etc.)3.A.1.109–112ABCATPB
 Proteins3.A.5.1–8IISPATP + PMFB, A, Y, An, chloroplasts
 Proteins, flagellar constituents3.A.6.1.1–2IIISPATPB
 Proteins3.A.7.1.1IVSPATPB
 Proteins3.A.8MPTATP/PMFMitochondria
 Proteins3.A.9CEPTATP/PMFChloroplast envelope
VII.C. Nucleic acids
 DNA (single stranded)3.A.11DNA-TATPB
 DNA-protein complexes3.A.7.1.1IVSPATPB
VII.D. Lipids
 Aminophospholipids3.A.3.8.1–2P-ATPaseATPAn, Y, F
 Glycolipids3.A.1.114.1ABCATPB
 Lipids (general)3.A.1.201.1ABCATPAn, Y, F, B
 Lipids3.A.6.4.2RNDPMFB
 Lipid A3.A.1.106.1ABCATPB
 Phospholipids2.A.31.1.1AENoneAn
 Phospholipids3.A.1.201.1ABCATPAn, Y, F, B