| UniProtKB AC (Name) | UniProtKB Section | Organism | Description | |
|---|---|---|---|---|
| P0A8D6 (YMDB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | O-acetyl-ADP-ribose deacetylase; Regulator of RNase III activity; | |
| P76159 (LYSQ_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Probable prophage lysozyme; Endolysin; Lysis protein; Muramidase; Probable lysozyme from lambdoid prophage Qin; | |
| P0ABA4 (ATPD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | ATP synthase subunit delta; ATP synthase F(1) sector subunit delta; F-type ATPase subunit delta; | |
| P0A901 (BLC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Outer membrane lipoprotein Blc; | |
| P32701 (PDEC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Probable cyclic di-GMP phosphodiesterase PdeC; | |
| P0AEZ9 (MOAB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Molybdenum cofactor biosynthesis protein B; | |
| P62395 (SECM_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Secretion monitor; Gene X; | |
| P39411 (NCPP_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Inosine/xanthosine triphosphatase; Non-canonical purine NTP phosphatase; Non-standard purine NTP phosphatase; Nucleoside-triphosphate phosphatase; | |
| P47737 (X19F_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | X polypeptide; ORF 19; ORF169; P19 protein; | |
| P15639 (PUR9_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Bifunctional purine biosynthesis protein PurH; Phosphoribosylaminoimidazolecarboxamide formyltransferase; 2.1.2.3; AICAR transformylase; IMP cyclohydrolase; 3.5.4.10; ATIC; IMP synthase; Inosinicase; | |
| P08957 (T1MK_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Type I restriction enzyme EcoKI methylase subunit; Type I methyltransferase M.EcoKI; | |
| P76501 (YFCR_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized fimbrial-like protein YfcR; | |
| P77743 (PRPR_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Propionate catabolism operon regulatory protein; | |
| P0A7I4 (RF3_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Peptide chain release factor RF3; | |
| P0AFL6 (PPX_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Exopolyphosphatase; Metaphosphatase; | |
| P0ABB0 (ATPA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | ATP synthase subunit alpha; ATP synthase F1 sector subunit alpha; F-ATPase subunit alpha; | |
| P77626 (SUTR_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | HTH-type transcriptional regulator SutR; Sulfur utilization regulator; | |
| P76208 (YNIB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YniB; | |
| P77187 (YAHF_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YahF; | |
| P37195 (DCTR_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | HTH-type transcriptional regulator DctR; | |
| P36649 (CUEO_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Multicopper oxidase CueO; Blue copper oxidase CueO; Copper efflux oxidase; Cuprous oxidase; | |
| P77473 (PDEB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Probable cyclic di-GMP phosphodiesterase PdeB; | |
| P76128 (DDPA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Probable D,D-dipeptide-binding periplasmic protein DdpA; | |
| P37342 (YJJI_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YjjI; | |
| P11349 (NARH_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Respiratory nitrate reductase 1 beta chain; Nitrate reductase A subunit beta; Quinol-nitrate oxidoreductase subunit beta; | |
| P23890 (CADC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Transcriptional activator CadC; Membrane-integrated pH sensor CadC; | |
| P61949 (FLAV_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Flavodoxin 1; Flavodoxin A; | |
| P77789 (YDES_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized fimbrial-like protein YdeS; | |
| P0A7A9 (IPYR_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Inorganic pyrophosphatase; Pyrophosphate phospho-hydrolase; | |
| P0A776 (RPPH_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | RNA pyrophosphohydrolase; (Di)nucleoside polyphosphate hydrolase; Ap5A pyrophosphatase; | |
| P08189 (FIMF_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein FimF; | |
| P0ACR9 (MPRA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Transcriptional repressor MprA; Transcriptional repressor EmrR; | |
| P76345 (C56H1_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Cytochrome b561 homolog 1; | |
| P0A754 (KEFF_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Glutathione-regulated potassium-efflux system ancillary protein KefF; Quinone oxidoreductase KefF; | |
| P0ABE5 (C561_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Superoxide oxidase CybB; Cytochrome b-561; Cytochrome b561; Superoxide:quinone oxidoreductase; Superoxide:ubiquinone oxidoreductase; | |
| P0A6M2 (DSBB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Disulfide bond formation protein B; Disulfide oxidoreductase; | |
| P0A7B8 (HSLV_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | ATP-dependent protease subunit HslV; Heat shock protein HslV; | |
| P37025 (THPR_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | RNA 2',3'-cyclic phosphodiesterase; Two-histidine 2',3'-cyclic phosphodiesterase acting on RNA; | |
| P23862 (PRIC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Replication restart protein PriC; Primosomal replication protein n''; | |
| P0AEC0 (YOAE_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | UPF0053 inner membrane protein YoaE; | |
| P39829 (GARD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Galactarate dehydratase (L-threo-forming); | |
| P77432 (LSRK_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Autoinducer-2 kinase; | |
| 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; | |
| P69922 (FUCI_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | L-fucose isomerase; 6-deoxy-L-galactose isomerase; D-arabinose isomerase; | |
| P77265 (MDLA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Multidrug resistance-like ATP-binding protein MdlA; | |
| P0A9A9 (FUR_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Ferric uptake regulation protein; | |
| P0ACY6 (YEAL_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | UPF0756 membrane protein YeaL; | |
| P0A944 (RIMI_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | [Ribosomal protein bS18]-alanine N-acetyltransferase; KAT; Peptidyl-lysine N-acetyltransferase; | |
| P32155 (PTFLA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | PTS system fructose-like EIIA component; Fructose-like phosphotransferase enzyme IIA component; | |
| P0ACZ2 (ETP_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Low molecular weight protein-tyrosine-phosphatase Etp; |
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_02 that was used for the most up to date SWISS-MODEL Repository.
| Proteins in proteome | Sequences modelled | Models |
| 4,403 | 3,764 | 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 | 18-mer | 20-mer | 22-mer | 24-mer | 25-mer | 26-mer | 30-mer | 34-mer | 40-mer | 44-mer | 48-mer | 60-mer |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3,730 | 1,660 | 132 | 488 | 20 | 139 | 11 | 55 | 3 | 19 | 2 | 16 | 6 | 1 | 1 | 1 | 2 | 1 | 11 | 1 | 3 | 1 | 1 | 1 | 2 | 1 | 2 |
