| UniProtKB AC (Name) | UniProtKB Section | Organism | Description | |
|---|---|---|---|---|
| P75958 (LOLE_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Lipoprotein-releasing system transmembrane protein LolE; | |
| P0AFU8 (RISA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Riboflavin synthase; | |
| P0AAD2 (MTR_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Tryptophan-specific transport protein; Tryptophan permease; | |
| P0A7E3 (PYRE_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Orotate phosphoribosyltransferase; | |
| P0AB38 (LPOB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Penicillin-binding protein activator LpoB; Lipoprotein activator of PBP from the outer membrane B; | |
| P60720 (LIPB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Octanoyltransferase; Lipoate-protein ligase B; Lipoyl/octanoyl transferase; Octanoyl-[acyl-carrier-protein]-protein N-octanoyltransferase; | |
| P0A955 (ALKH_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | KHG/KDPG aldolase; (4S)-4-hydroxy-2-oxoglutarate aldolase; 2-dehydro-3-deoxy-phosphogluconate aldolase; 2-keto-3-deoxy-6-phosphogluconate aldolase; 2-keto-4-hydroxyglutarate aldolase; Entner-Douderoff aldolase; Oxaloacetate decarboxylase; Phospho-2-dehydro-3-deoxygluconate aldolase; Phospho-2-keto-3-deoxygluconate aldolase; | |
| P76543 (YFFL_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YffL; | |
| P04335 (FRSA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Esterase FrsA; Fermentation/respiration switch protein; | |
| P0ABG4 (FTSW_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Probable peptidoglycan glycosyltransferase FtsW; Cell division protein FtsW; Cell wall polymerase; Lipid II flippase FtsW; Peptidoglycan polymerase; | |
| P25746 (HFLD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | High frequency lysogenization protein HflD; | |
| P0A752 (NADD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Nicotinate-nucleotide adenylyltransferase; Deamido-NAD(+) diphosphorylase; Deamido-NAD(+) pyrophosphorylase; Nicotinate mononucleotide adenylyltransferase; | |
| P21369 (PNCA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Nicotinamidase; Nicotinamide deamidase; Pyrazinamidase; | |
| P0A720 (KTHY_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Thymidylate kinase; Thymidine monophosphate kinase; dTMP kinase; | |
| P18473 (TRBC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Periplasmic protein TrbC; | |
| P0AGE4 (SSTT_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Serine/threonine transporter SstT; Na(+)/serine-threonine symporter; | |
| P0A8F4 (URK_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uridine kinase; Cytidine monophosphokinase; Uridine monophosphokinase; | |
| P0AA84 (CLSB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Cardiolipin synthase B; | |
| P32140 (SQUS_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Sulfoquinovose isomerase; Sulfoquinovose-sulfofructose isomerase; | |
| P32053 (INTA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Prophage integrase IntA; Prophage CP4-57 integrase SlpA; | |
| P76397 (MDTA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Multidrug resistance protein MdtA; Multidrug transporter MdtA; | |
| P0ADA1 (TESA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Thioesterase 1/protease 1/lysophospholipase L1; Acyl-CoA thioesterase 1; Acyl-CoA thioesterase I; Arylesterase; Lysophospholipase L1; Oleoyl-[acyl-carrier-protein] hydrolase; Phospholipid degradation C; Protease 1; Protease I; Thioesterase I/protease I; | |
| P52125 (YFJJ_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YfjJ; | |
| P21367 (YCAC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Probable hydrolase YcaC; | |
| P77657 (YAGK_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YagK; | |
| P0AAL6 (YDHY_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized ferredoxin-like protein YdhY; | |
| P37660 (YHJV_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Inner membrane transport protein YhjV; | |
| Q46904 (YGCN_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Probable electron transfer flavoprotein-quinone oxidoreductase YgcN; | |
| P77689 (SUFD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Iron-sulfur cluster assembly protein SufD; | |
| P31545 (EFEB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Deferrochelatase; Peroxidase EfeB; | |
| P0A6H1 (CLPX_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | ATP-dependent Clp protease ATP-binding subunit ClpX; ATP-dependent unfoldase ClpX; | |
| P60906 (SYH_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Histidine--tRNA ligase; Histidyl-tRNA synthetase; | |
| P0DMC9 (RCSA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Transcriptional regulatory protein RcsA; Colanic acid capsular biosynthesis activation protein A; | |
| P0AEG4 (DSBA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Thiol:disulfide interchange protein DsbA; | |
| P04152 (UMUC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein UmuC; DNA polymerase V; | |
| P0A8F0 (UPP_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uracil phosphoribosyltransferase; UMP pyrophosphorylase; UPRTase; | |
| P0ADI9 (YHHN_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized membrane protein YhhN; | |
| P08192 (FOLC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Dihydrofolate synthase/folylpolyglutamate synthase; Folylpoly-gamma-glutamate synthetase-dihydrofolate synthetase; Folylpolyglutamate synthetase; Tetrahydrofolylpolyglutamate synthase; | |
| P0A7A5 (PIMT_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein-L-isoaspartate O-methyltransferase; L-isoaspartyl protein carboxyl methyltransferase; Protein L-isoaspartyl methyltransferase; Protein-beta-aspartate methyltransferase; | |
| P37339 (LHGD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | L-2-hydroxyglutarate dehydrogenase; L2HG:quinone oxidoreductase; | |
| P0ACA7 (GSTB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Glutathione S-transferase GstB; | |
| P0A6U5 (RSMG_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Ribosomal RNA small subunit methyltransferase G; 16S rRNA 7-methylguanosine methyltransferase; Glucose-inhibited division protein B; | |
| P61320 (LOLB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Outer-membrane lipoprotein LolB; | |
| P0AAP5 (IPRA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Inhibitor of hydrogen peroxide resistance; | |
| P76466 (YFAT_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YfaT; | |
| P0AFP0 (YADS_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | UPF0126 inner membrane protein YadS; | |
| P64588 (YQJI_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Transcriptional regulator YqjI; | |
| P33024 (PSUT_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putative pseudouridine transporter; | |
| P24077 (ENTS_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Enterobactin exporter EntS; Protein p43; | |
| P33021 (NUPX_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putative nucleoside permease NupX; |
Escherichia coli is a Gram negative gammaproteobacterium commonly found in the lower intestine of warm-blooded organisms (endotherms). Most E. coli strains are harmless and are part of the normal flora of the gut.
Since E. coli can survive outside the body for a limited amount of time, it is an indicator organism for fecal contamination of the environment. The descendants of two isolates, K-12 and B strain, are used routinely in molecular biology as both a tool and a model organism. It is the most widely studied prokaryotic model organism due to its ease of culturing and short generation time.
The first E. coli genome was sequenced in 1997 (K12 strain).
From left to right: i) The number of proteins in the reference proteome of Escherichia coli, ii) the number of unique protein sequences for which at least one model is available, iii) the total number of models and iv) a coverage bar plot is shown.
The bar plot shows the coverage for every protein in the reference proteome of Escherichia coli for which there is at least one model. Different colours (dark green to red boxes) represent the coverage of the targets. Targets with high coverage are represented in dark green (more than 80% of the target's length is covered by models), whereas low coverage is shown in red. The size of each box is proportional to the number of target sequences with a given coverage.
For information on the latest proteome for Escherichia coli, please visit UniProtKB.
You can easily download the latest protein sequences for Escherichia coli proteome here. Please note this download is for the current UniProtKB release, which may be different to release 2026_01 that was used for the most up to date SWISS-MODEL Repository.
| Proteins in proteome | Sequences modelled | Models |
| 4,403 | 3,758 | 6,310 |
Detailed coverage numbers are obtained by hovering the mouse over one of the boxes.
The plot shows the evolution over years (x-axis) of the fraction of Escherichia coli reference proteome residues (y-axis) for which structural information is available. Different colors (light blue to dark blue) in the plot represent the quality of the sequence alignment between the reference proteome sequences (targets) and the sequences of the proteins in the structure database (templates). Alignments with low sequence identity are displayed in light blue, whereas alignments with high sequence identity are depicted in dark blue. The SWISS-MODEL Template Library is used as database of templates. Only target-template alignments found by HHblits and only residues with atom coordinates are considered.
This chart shows the percentage of residues in the Escherichia coli proteome which are covered by experimental structures and the enhancement of coverage by homology modelling by the SWISS-MODEL pipeline. Experimental residue coverage is determined using SIFTS mapping. For residues which are not covered by experimental structures (including where there are no atom records in SIFTS mapping) the model coverage bars are coloured by QMEANDisCo local quality score.
Many proteins form oligomeric structures either by self-assembly (homo-oligomeric) or by assembly with other proteins (hetero-oligomeric) to accomplish their function. In SWISS-MODEL Repository, the quaternary structure annotation of the template is used to model the target sequence in its oligomeric form. Currently our method is limited to the modelling of homo-oligomeric assemblies. The oligomeric state of the template is only considered if the interface is conserved.
| Single Chain | 2-mer | 3-mer | 4-mer | 5-mer | 6-mer | 7-mer | 8-mer | 9-mer | 10-mer | 11-mer | 12-mer | 14-mer | 15-mer | 16-mer | 20-mer | 22-mer | 24-mer | 25-mer | 26-mer | 30-mer | 34-mer | 40-mer | 44-mer | 48-mer | 60-mer |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3,734 | 1,658 | 130 | 485 | 19 | 144 | 9 | 57 | 4 | 19 | 2 | 16 | 6 | 1 | 1 | 2 | 1 | 11 | 1 | 3 | 1 | 1 | 1 | 1 | 1 | 2 |
