| UniProtKB AC (Name) | UniProtKB Section | Organism | Description | |
|---|---|---|---|---|
| P31553 (CAIT_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | L-carnitine/gamma-butyrobetaine antiporter; | |
| P0AC28 (5FCL_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | 5-formyltetrahydrofolate cyclo-ligase; 5,10-methenyltetrahydrofolate synthetase; | |
| Q46822 (IDI_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Isopentenyl-diphosphate Delta-isomerase; IPP:DMAPP isomerase; Isopentenyl pyrophosphate isomerase; | |
| P76938 (EPMC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Elongation factor P lysine hydroxylase; EF-P post-translational modification enzyme C; | |
| P04128 (FIMA1_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Type-1 fimbrial protein, A chain; Type-1A pilin; | |
| P0AAF3 (ARAG_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Arabinose import ATP-binding protein AraG; | |
| P37013 (NORR_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Anaerobic nitric oxide reductase transcription regulator NorR; | |
| P0ABF8 (PGSA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | CDP-diacylglycerol--glycerol-3-phosphate 3-phosphatidyltransferase; Phosphatidylglycerophosphate synthase; | |
| P0A7X6 (RIMM_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Ribosome maturation factor RimM; 21K; | |
| P0AB06 (MEPK_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Peptidoglycan L,D-endopeptidase MepK; Murein endopeptidase K; | |
| P31473 (RAVA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Regulatory ATPase RavA; Regulatory ATPase variant A; | |
| P77304 (DTPA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Dipeptide and tripeptide permease A; | |
| P34211 (YUAR_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putative hydrolase YuaR; | |
| P39282 (YJEM_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Inner membrane transporter YjeM; | |
| P0C0L7 (PROP_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Proline/betaine transporter; Proline porter II; | |
| P09835 (UHPB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Signal transduction histidine-protein kinase/phosphatase UhpB; | |
| P04983 (RBSA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Ribose import ATP-binding protein RbsA; | |
| P07117 (PUTP_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Sodium/proline symporter; Proline carrier; Proline permease; Propionate transporter; | |
| P0ACD2 (WCAF_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putative colanic acid biosynthesis acetyltransferase WcaF; | |
| P77509 (YPHE_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized ABC transporter ATP-binding protein YphE; | |
| P76222 (YNJA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YnjA; | |
| P18035 (TRBB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein TrbB; | |
| P15723 (DGTP_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Deoxyguanosinetriphosphate triphosphohydrolase; | |
| P0A8N5 (SYK2_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Lysine--tRNA ligase, heat inducible; Lysyl-tRNA synthetase; | |
| P0A8N3 (SYK1_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Lysine--tRNA ligase; Lysyl-tRNA synthetase; | |
| P0AG16 (PUR1_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Amidophosphoribosyltransferase; Glutamine phosphoribosylpyrophosphate amidotransferase; | |
| P37677 (LYXK_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | L-xylulose/3-keto-L-gulonate kinase; 3-dehydro-L-gulonate kinase; | |
| P04949 (FLIC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Flagellin; | |
| P0AA86 (DSBE_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Thiol:disulfide interchange protein DsbE; Cytochrome c biogenesis protein CcmG; | |
| P0A9U6 (PUUR_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | HTH-type transcriptional regulator PuuR; | |
| P16690 (PHNN_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Ribose 1,5-bisphosphate phosphokinase PhnN; Ribose 1,5-bisphosphokinase; | |
| P75976 (YMFL_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YmfL; | |
| Q6BEX0 (YTFR_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Galactofuranose transporter ATP-binding protein YtfR; | |
| P13035 (GLPD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Aerobic glycerol-3-phosphate dehydrogenase; | |
| P03012 (TNR1_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Transposon gamma-delta resolvase; Transposon Tn1000 resolvase; | |
| P03014 (PINE_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Serine recombinase PinE; DNA-invertase PinE; Site-specific recombinase PinE; | |
| P39380 (KPTA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | RNA 2'-phosphotransferase; | |
| P77296 (YBET_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Sel1-repeat-containing protein YbeT; | |
| P37648 (YHJJ_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein YhjJ; | |
| P39342 (YJGR_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YjgR; | |
| P75915 (YCDY_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Chaperone protein YcdY; | |
| P67095 (YFCE_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Phosphodiesterase YfcE; | |
| P0AFE0 (NUOJ_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | NADH-quinone oxidoreductase subunit J; NADH dehydrogenase I subunit J; NDH-1 subunit J; NUO10; | |
| P39187 (YTFJ_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YtfJ; | |
| P0A756 (KEFG_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Glutathione-regulated potassium-efflux system ancillary protein KefG; Putative quinone oxidoreductase KefG; | |
| P0A9W9 (YRDA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein YrdA; | |
| P68767 (AMPA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Cytosol aminopeptidase; Aminopeptidase A/I; Leucine aminopeptidase; Leucyl aminopeptidase; | |
| P16432 (HYCF_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Formate hydrogenlyase subunit 6; Hydrogenase-3 component F; | |
| P33343 (YEHD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized fimbrial-like protein YehD; | |
| P18200 (PGPA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Phosphatidylglycerophosphatase A; Phosphatidylglycerolphosphate phosphatase A; |
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_03 that was used for the most up to date SWISS-MODEL Repository.
| Proteins in proteome | Sequences modelled | Models |
| 4,403 | 3,773 | 6,329 |
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 | 23-mer | 24-mer | 25-mer | 26-mer | 30-mer | 34-mer | 36-mer | 40-mer | 44-mer | 48-mer | 60-mer |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3,733 | 1,670 | 133 | 485 | 21 | 141 | 12 | 55 | 3 | 20 | 2 | 17 | 6 | 1 | 2 | 1 | 2 | 1 | 1 | 11 | 1 | 3 | 1 | 1 | 1 | 1 | 1 | 1 | 2 |
