TCDB is operated by the Saier Lab Bioinformatics Group
TCIDNameDomainKingdom/PhylumProtein(s)
*1.B.39.1.1









Outer membrane porin, OmpW.  Involved in paraquot efflux (Gil et al. 2007). OmpW also participates in the efflux of EmrE-specific substrates across the OM (Beketskaia et al. 2014). The 3-d structure is available (PDB#2F1C).

Bacteria
Proteobacteria
OmpW of Salmonella typhimurium
*1.B.39.1.2









OCT plasmid-encoded AlkL outer membrane cation-selective porin, (probably transports alkanes) (van Beilen et al., 1992).  Has been used for the uptake of dodecanoic acid methyl ester (DAME) in E. coli for the production of  12-aminododecanoic acid methyl ester (ADAME), a building block for the high-performance polymer Nylon 12 (Ladkau et al. 2016).

Bacteria
Proteobacteria
AlkL of Pseudomonas oleovorans (Q00595)
*1.B.39.1.3









The anaerobically induced outer membrance porin, OprG. Transports small neutral amino acids (Kucharska et al. 2015). The 3-d structure is available (Touw et al. 2010).  Essential for normal biofilm formation (Ritter et al. 2012). It is an eight-stranded β-barrel monomer that is too narrow to accommodate even the smallest transported amino acid, glycine, raising the question of how OprG facilitates amino acid uptake (Sanganna Gari et al. 2018). Pro-92 of OprG is important for amino acid transport, with a P92A substitution inhibiting transport and the NMR structure of this variant revealing that this substitution produces structural changes in the barrel rim and restricts loop motions. OprG assembles into oligomers in the OM whose subunit interfaces could form a transport channel, and conformational changes in the barrel-loop region may be crucial for its activity (Sanganna Gari et al. 2018).

Bacteria
Proteobacteria
OprG of Pseudomonas aeruginosa (Q9HWW1)
*1.B.39.1.4









The Naphthalene polycyclic aromatic hydrocarbon porin, OmpW (Neher and Lueking, 2009).
Bacteria
Proteobacteria
OmpW of Pseudomonas fluorescens (Q3K638)
*1.B.39.1.5









Porin of 230 aas; encoded within the  NifA-RpoN regulon and required for normal symbiosis. (Sullivan et al. 2013).

Bacteria
Proteobacteria
Porin of Mesorhizobium loti
*1.B.39.1.6









Outer membrane porin, OmpW, of 212 aas.  Mediates transport of quaternary cationic ammonium compounds (Beketskaia et al. 2014).  It is involved in anaerobic carbon and energy metabolism, mediating the transition from aerobic to anaerobic lifestyles (Xiao et al. 2016).

Bacteria
Proteobacteria
OmpW of E. coli
*1.B.39.1.7









Outer membrane porin selective for cations, OmpW of 226 aas (Benz et al. 2015).

Bacteria
Proteobacteria
OmpW of Caulobacter crescentus
*1.B.39.1.8









Outer membrane porin of 214 aas, OmpW, selective for cations (Benz et al. 2015).

Bacteria
Proteobacteria
OmpW of Caulobacter crescentus
*1.B.39.2.1









Putative outer membrane porin of 224 aas

Bacteria
Proteobacteria
OMP of Geobacter uraniireducens (Geobacter uraniumreducens)
*1.B.39.2.2









Uncharacterized protein of 200 aas

Bacteria
Proteobacteria
UP of Geobacter daltonii