| UniProtKB AC (Name) | UniProtKB Section | Organism | Description | |
|---|---|---|---|---|
| P37766 (YDIF_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Acetate CoA-transferase YdiF; Short-chain acyl-CoA:acetate CoA-transferase; | |
| P33916 (YEJF_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Oligopeptide transport ATP-binding protein YejF; | |
| P69828 (PTKA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | PTS system galactitol-specific EIIA component; EIIB-Gat; Galactitol-specific phosphotransferase enzyme IIA component; | |
| P16685 (PHNG_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Alpha-D-ribose 1-methylphosphonate 5-triphosphate synthase subunit PhnG; | |
| P30749 (MOAE_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Molybdopterin synthase catalytic subunit; MPT synthase subunit 2; Molybdenum cofactor biosynthesis protein E; Molybdopterin-converting factor large subunit; Molybdopterin-converting factor subunit 2; | |
| P0AF96 (TABA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Toxin-antitoxin biofilm protein TabA; | |
| P00904 (TRPGD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Bifunctional protein TrpGD; Anthranilate synthase component 2; AS; ASII; 4.1.3.27; Anthranilate synthase, glutamine amidotransferase component; Anthranilate phosphoribosyltransferase; 2.4.2.18; | |
| P0AFC0 (NUDB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Dihydroneopterin triphosphate diphosphatase; Dihydroneopterin triphosphate pyrophosphatase; dATP pyrophosphohydrolase; | |
| P0A8N0 (MATP_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Macrodomain Ter protein; | |
| P76261 (PDED_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Probable cyclic di-GMP phosphodiesterase PdeD; | |
| P0A8A8 (RIMP_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Ribosome maturation factor RimP; | |
| Q47158 (YAFP_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized N-acetyltransferase YafP; | |
| P0ADL3 (YICN_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YicN; | |
| P0A9U3 (YBIT_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Probable ATP-binding protein YbiT; | |
| P08997 (MASY_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Malate synthase A; | |
| P04079 (GUAA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | GMP synthase [glutamine-hydrolyzing]; GMP synthetase; Glutamine amidotransferase; | |
| P37052 (YCHJ_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | UPF0225 protein YchJ; | |
| P52139 (YFJX_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YfjX; | |
| P75676 (YAFX_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YafX; | |
| P67601 (YOBD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | UPF0266 membrane protein YobD; | |
| P0A731 (MGSA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Methylglyoxal synthase; | |
| P75785 (OPGE_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Phosphoethanolamine transferase OpgE; | |
| P0A7I4 (RF3_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Peptide chain release factor RF3; | |
| P19642 (PTOCB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | PTS system maltose-specific EIICB component; Maltose permease IIC component; PTS system maltose-specific EIIC component; Maltose-specific phosphotransferase enzyme IIB component; 2.7.1.208; PTS system maltose-specific EIIB component; | |
| P77432 (LSRK_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Autoinducer-2 kinase; | |
| P07018 (MCP4_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Methyl-accepting chemotaxis protein IV; Dipeptide chemoreceptor protein; | |
| P39391 (YJIT_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein YjiT; | |
| P35340 (AHPF_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Alkyl hydroperoxide reductase subunit F; Alkyl hydroperoxide reductase F52A protein; | |
| P0ABJ9 (CYDA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Cytochrome bd-I ubiquinol oxidase subunit 1; Cytochrome bd-I oxidase subunit I; Cytochrome d ubiquinol oxidase subunit I; | |
| P76446 (PDEN_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Probable cyclic di-GMP phosphodiesterase PdeN; | |
| P0AEC0 (YOAE_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | UPF0053 inner membrane protein YoaE; | |
| P04949 (FLIC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Flagellin; | |
| P0A6W9 (GSH1_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Glutamate--cysteine ligase; Gamma-ECS; Gamma-glutamylcysteine synthetase; | |
| P0AGC5 (MLTF_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Membrane-bound lytic murein transglycosylase F; Murein lyase F; | |
| P39829 (GARD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Galactarate dehydratase (L-threo-forming); | |
| P77437 (HYFF_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Hydrogenase-4 component F; | |
| P0ACJ5 (DECR_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | DNA-binding transcriptional activator DecR; | |
| P0ACI6 (ASNC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Regulatory protein AsnC; | |
| Q47269 (YBCN_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YbcN; | |
| P28307 (CSGA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Major curlin subunit; | |
| P0A8D9 (YFBV_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | UPF0208 membrane protein YfbV; | |
| P0ABS1 (DKSA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | RNA polymerase-binding transcription factor DksA; DnaK suppressor protein; | |
| P0A6Q6 (FABZ_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | 3-hydroxyacyl-[acyl-carrier-protein] dehydratase FabZ; (3R)-hydroxymyristoyl-[acyl-carrier-protein] dehydratase; 17 kDa actomyosin component; Beta-hydroxyacyl-ACP dehydratase; | |
| P0ABK7 (CSGB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Minor curlin subunit; | |
| P08957 (T1MK_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Type I restriction enzyme EcoKI methylase subunit; Type I methyltransferase M.EcoKI; | |
| P0A9M5 (XGPT_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Xanthine-guanine phosphoribosyltransferase; Xanthine phosphoribosyltransferase; | |
| P06968 (DUT_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Deoxyuridine 5'-triphosphate nucleotidohydrolase; dUTP pyrophosphatase; | |
| P0AAS3 (YBBJ_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Inner membrane protein YbbJ; | |
| P22186 (MRAZ_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Transcriptional regulator MraZ; | |
| P0A8D3 (YAII_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | UPF0178 protein YaiI; |
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 |
