PDB ID or protein name

Beta-barrel transmembrane superfamilies

1.2.01. OMPA-like (n=8,S=10) (3 families) 1.B.6 (TCDB)
1.2.02. OMPT-like (n=10,S=12) (2 families) 1.B.1 (TCDB)
1.2.03. Autotransporter (AT) (n=12,S=14) (1 family) 1.B.12 (TCDB)
1.2.04. Trimeric autotransporter (n=12,S=12) (1 family) 1.B.40 (TCDB)
1.2.05. OM phospholipase (n=12,S=16) (1 family)
1.2.06. Nucleoside-specific channel-forming membrane porin (Tsx) (n=12,S=16) (1 family) 1.B.10 (TCDB)
1.2.07. FadL outer membrane protein (FadL) (n=14,S=14) (1 family) 1.B.9 (TCDB)
1.2.08. OmpG porin (n=14,S=16) (1 family) 1.B.21 (TCDB)
1.2.09. Trimeric porins (n=16,S=20) (3 families)
1.2.10. Sugar porins (n=18,S=22) (1 family) 1.B.3 (TCDB)
1.2.11. Outer membrane porin (Opr) family (n=18,S=22) (1 family) 1.B.25 (TCDB)
1.2.12. Omp85-TpsB transporters (n=16,S=20) (1 family) 1.B.20 (TCDB)
1.2.13. Ligand-gated protein channels (n=22,S=24) (2 families) 1.B.14 (TCDB)
1.2.14. Outer Membrane Factor (OMF) (n=12,S=18) trimeric (1 family) 1.B.17 (TCDB)
1.2.15. Leukocidin-like (2 families)
1.2.16. Fimbrial usher porin (n=24,S=26) (1 family) 1.B.11 (TCDB)
1.2.17. Mitochondrial and plastid porins (n=19,S=20) (1 family) 1.B.8 (TCDB)
1.2.18. Lipid A deacylase (n=12, S=14) (1 family)
1.2.19. Oligogalactoronate-specific porin (KdgM) (n=12,S=14) (1 family) 1.B.35 (TCDB)

Beta-barrel transmembrane (68 proteins)

Family Protein Name PDB ID Species Localization Num. Subunits Num. TM Sec. Structs. Hydrophobic Thickness or Depth (Å) Tilt Angle (°) ΔGtransfer (kcal/mol)
1.2.01.01. Outer membrane protein A (OMPA) 1qjp Escherichia coli Bact. gram-neg outer 1 8 24.9 ± 2.2 8 ± 6 -36.7
1.2.01.01. Outer membrane protein X (OMPX) 1qj8 Escherichia coli Bact. gram-neg outer 1 8 23.9 ± 1.9 9 ± 9 -36.7
1.2.01.01. Outer membrane protein A from Klebsiella 2k0l Klebsiella pneumoniae Bact. gram-neg outer 1 8 22.2 ± 2.8 14 ± 8 -32.4
1.2.01.01. Outer membrane protein NspA 1p4t Neisseria meningitidis Bact. gram-neg outer 1 8 24.3 ± 1.9 10 ± 5 -49.3
1.2.01.01. Transmembrane beta-barrel platform protein 2jmm Designed proteins Bact. gram-neg outer 8 8 22.6 ± 1.7 3 ± 5 -34.0
1.2.01.01. Outer membrane protein W 2f1v Escherichia coli Bact. gram-neg outer 1 8 25.0 ± 1.5 9 ± 6 -46.0
1.2.01.02. Lipid A deacylase PagL 2erv Pseudomonas aeruginosa Bact. gram-neg outer 1 8 23.0 ± 2.0 23 ± 4 -42.3
1.2.01.02. Lipid A acylase PagP 1thq Escherichia coli Bact. gram-neg outer 1 8 22.0 ± 2.0 26 ± 3 -38.7
1.2.01.03. Major outer membrane protein from Thermus thermophilus 3dzm Thermus thermophilus Bact. gram-neg outer 1 8 28.2 ± 1.7 4 ± 5 -59.2
1.2.02.01. Outer membrane protease OmpT 1i78 Escherichia coli Bact. gram-neg outer 1 10 25.8 ± 1.2 3 ± 4 -54.8
1.2.02.02. Outer membrane adhesin/invasin OpcA 1k24 Neisseria meningitidis Bact. gram-neg outer 1 10 25.2 ± 1.6 6 ± 4 -51.9
1.2.03.01. Autotransporter NalP, different conformation 1uyo Neisseria meningitidis Bact. gram-neg outer 1 12 23.2 ± 2.0 7 ± 4 -55.6
1.2.03.01. Serine protease EspP 2qom Escherichia coli Bact. gram-neg outer 1 12 26.1 ± 2.5 8 ± 5 -63.6
1.2.03.01. Autotransporter NalP 1uyn Neisseria meningitidis Bact. gram-neg outer 1 12 25.5 ± 2.2 5 ± 3 -62.2
1.2.04.01. Autotransporter Hia 2gr7 Haemophilus influenzae Bact. gram-neg outer 3 15 21.5 ± 1.5 0 ± 2 -53.8
1.2.04.01. Autotransporter Hia, a different conformation 3emo Haemophilus influenzae Bact. gram-neg outer 3 12 20.9 ± 1.5 1 ± 4 -50.2
1.2.05.01. Outer membrane phospholipase A, monomer 1qd6C Escherichia coli Bact. gram-neg outer 1 12 23.2 ± 1.5 3 ± 3 -52.8
1.2.05.01. Outer membrane phospholipase A 1qd6 Escherichia coli Bact. gram-neg outer 1 12 22.2 ± 1.1 0 ± 1 -91.6
1.2.06.01. Bacterial Nucleoside Transporter Ts 1tly Escherichia coli Bact. gram-neg outer 1 12 23.3 ± 2.2 5 ± 5 -49.1
1.2.07.01. Fatty Acid Transporter FadL 1t16 Escherichia coli Bact. gram-neg outer 1 14 24.5 ± 1.5 4 ± 3 -60.0
1.2.07.01. Toluene transporter TbuX 3bry Ralstonia pickettii Bact. gram-neg outer 1 14 24.7 ± 1.8 4 ± 4 -65.0
1.2.07.01. Toluene transporter TodX 3bs0 Pseudomonas putida Bact. gram-neg outer 14 14 22.2 ± 1.4 5 ± 3 -65.6
1.2.07.01. FadL homologue 3dwo Pseudomonas aeruginosa Bact. gram-neg outer 1 14 24.5 ± 1.7 2 ± 3 -63.2
1.2.08.01. Outer membrane protein G (OMPG), closed state 2iww Escherichia coli Bact. gram-neg outer 1 14 23.4 ± 1.5 1 ± 2 -67.0
1.2.08.01. Outer membrane protein G (OMPG) 2f1c Escherichia coli Bact. gram-neg outer 1 14 23.0 ± 1.3 1 ± 2 -60.3
1.2.08.01. Outer membrane protein G (OMPG), open state 2iwv Escherichia coli Bact. gram-neg outer 1 14 23.7 ± 1.4 2 ± 4 -64.2
1.2.09.01. Porin OmpF 1hxx Escherichia coli Bact. gram-neg outer 3 48 24.2 ± 0.8 0 ± 1 -147.6
1.2.09.01. Osmoporin OMPC 2j1n Escherichia coli Bact. gram-neg outer 3 48 24.4 ± 0.8 0 ± 1 -144.4
1.2.09.01. Porin 1osm Klebsiella pneumoniae Bact. gram-neg outer 3 48 23.5 ± 0.6 0 ± 1 -152.4
1.2.09.01. Anion-selective porin 1e54 Comamonas acidovorans Bact. gram-neg outer 3 48 24.5 ± 1.1 1 ± 1 -161.9
1.2.09.01. Phosphoporin (PhoE) 1pho Escherichia coli Bact. gram-neg outer 3 48 23.3 ± 0.8 0 ± 1 -148.9
1.2.09.01. Osmoporin OMPC, isoform 1 2ixx Escherichia coli Bact. gram-neg outer 3 48 24.9 ± 1.0 0 ± 1 -154.7
1.2.09.01. Osmoporin OMPC, isoform 2 2ixw Escherichia coli Bact. gram-neg outer 3 48 24.5 ± 1.0 0 ± 1 -141.4
1.2.09.02. Porin 2por Rhodobacter capsulatus Bact. gram-neg outer 3 48 22.5 ± 0.9 0 ± 1 -131.3
1.2.09.02. Porin 3prn Rhodopseudomonas blastica Bact. gram-neg outer 3 48 22.2 ± 0.9 0 ± 0 -147.6
1.2.09.03. Porin OprP 2o4v Pseudomonas aeruginosa Bact. gram-neg outer 3 48 23.0 ± 1.4 0 ± 1 -144.4
1.2.10.01. Sucrose-specific porin 1a0s Salmonella typhimurium Bact. gram-neg outer 3 54 22.5 ± 0.6 0 ± 1 -124.0
1.2.10.01. Maltoporin 1af6 Escherichia coli Bact. gram-neg outer 3 54 25.0 ± 0.7 0 ± 0 -151.2
1.2.10.01. Maltoporin 2mpr Salmonella typhimurium Bact. gram-neg outer 3 54 24.0 ± 0.7 0 ± 0 -139.4
1.2.11.01. Outer membrane porin OprD 2odj Pseudomonas aeruginosa Bact. gram-neg outer 1 18 21.3 ± 1.5 6 ± 2 -68.6
1.2.11.01. Protein OpdK 2qtk Pseudomonas aeruginosa Bact. gram-neg outer 1 18 21.8 ± 2.0 5 ± 4 -70.1
1.2.11.01. BenF-like porin 3jty Pseudomonas fluorescens Bact. gram-neg outer 1 18 23.3 ± 2.5 4 ± 3 -66.5
1.2.12.01. Filamentous hemagglutinin transporter FhaC 2qdz Bordetella pertussis Bact. gram-neg outer 1 16 22.3 ± 1.1 6 ± 2 -74.5
1.2.13.01. Outer membrane cobalamin transporter BtuB, meso form 2guf Escherichia coli Bact. gram-neg outer 22 22 21.5 ± 1.2 2 ± 2 -80.9
1.2.13.01. Outer membrane receptor FauA 3efm Bordetella pertussis Bact. gram-neg outer 1 22 23.0 ± 1.3 4 ± 2 -85.2
1.2.13.01. Outer membrane cobalamin transporter BtuB 1nqe Escherichia coli Bact. gram-neg outer 1 22 21.1 ± 1.3 1 ± 1 -79.5
1.2.13.01. Outer membrane cobalamin transporter BtuB, complex with TonB 2gsk Escherichia coli Bact. gram-neg outer 1 22 21.7 ± 1.2 2 ± 2 -84.1
1.2.13.02. Ferric hydroxamate uptake receptor FhuA 1qfg Escherichia coli Bact. gram-neg outer 1 22 23.5 ± 1.0 0 ± 1 -86.9
1.2.13.02. Ferric enterobactin receptor FepA 1fep Escherichia coli Bact. gram-neg outer 1 22 24.5 ± 1.2 1 ± 2 -93.1
1.2.13.02. Hemophore receptor HasR 3csl Serratia marcescens Bact. gram-neg outer 1 22 23.0 ± 1.3 1 ± 3 -80.6
1.2.13.02. Outer membrane transporter FecA 1kmo Escherichia coli Bact. gram-neg outer 1 22 22.9 ± 1.2 4 ± 1 -81.3
1.2.13.02. Fe(III)-pyochelin receptor FptA 1xkw Pseudomonas aeruginosa Bact. gram-neg outer 1 22 23.0 ± 1.3 4 ± 2 -92.7
1.2.13.02. Colicin I receptor complex with binding domain of Colicin Ia 2hdi Escherichia coli Bact. gram-neg outer 1 22 22.5 ± 1.3 1 ± 2 -81.2
1.2.13.02. Ferric hydroxamate uptake receptor FhuA, complex with TonB 2grx Escherichia coli Bact. gram-neg outer 1 22 24.5 ± 0.7 2 ± 2 -88.9
1.2.13.02. Colicin I receptor 2hdf Escherichia coli Bact. gram-neg outer 1 22 22.0 ± 1.4 2 ± 2 -81.1
1.2.13.02. Outer membrane heme transporter ShuA 3fhh Shigella dysenteriae Bact. gram-neg outer 1 22 23.0 ± 1.3 2 ± 2 -75.4
1.2.13.02. Pyoverdine Outer Membrane Receptor FpvA 2iah Pseudomonas aeruginosa Bact. gram-neg outer 1 22 22.5 ± 1.2 3 ± 2 -85.8
1.2.13.02. Outer membrane transporter FecA, different conformation 1kmp Escherichia coli Bact. gram-neg outer 1 22 24.6 ± 1.2 3 ± 2 -85.4
1.2.14.01. Drug-Discharge Outer Membrane Protein, OprM 1wp1 Pseudomonas aeruginosa Bact. gram-neg outer 3 12 25.0 ± 2.8 0 ± 2 -63.3
1.2.14.01. Outer membrane protein TolC 1ek9 Escherichia coli Bact. gram-neg outer 3 12 25.0 ± 1.5 0 ± 4 -61.7
1.2.14.01. Multidrug Resistance (VceC) protein 1yc9 Vibrio cholerae Bact. gram-neg outer 3 12 23.5 ± 1.2 0 ± 1 -60.8
1.2.15.01. Alpha-hemolysin 7ahl Staphylococcus aureus Secreted 7 14 24.5 ± 1.3 0 ± 1 -65.1
1.2.15.02. Porin MspA 1uun Mycobacterium smegmatis Bact. gram-pos cell wall 8 16 43.8 ± 0.9 0 ± 2 -137.1
1.2.16.01. P pilus usher PapC translocation domain 2vqi Escherichia coli Bact. gram-neg outer 1 24 18.4 ± 1.3 5 ± 2 -63.8
1.2.17.01. VDAC-1 channel 2jk4 Homo sapiens Mitochon. outer 1 19 20.4 ± 2.1 5 ± 5 -51.9
1.2.17.01. VDAC-1 channel 3emn Mus musculus Mitochon. outer 1 19 22.5 ± 1.3 2 ± 2 -62.6
1.2.17.01. VDAC-1 channel 2k4t Homo sapiens Mitochon. outer 1 19 20.6 ± 1.1 1 ± 2 -40.6
1.2.19.01. Acidic sugar-specific porin NanC 2wjr Escherichia coli Bact. gram-neg outer 1 12 19.0 ± 1.5 9 ± 5 -45.6