| UniProtKB AC (Name) | UniProtKB Section | Organism | Description | |
|---|---|---|---|---|
| P24202 (MRR_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Type IV methyl-directed restriction enzyme EcoKMrr; Mrr restriction system protein; | |
| P76008 (LDCA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Murein tetrapeptide carboxypeptidase; LD-carboxypeptidase A; Muramoyltetrapeptide carboxypeptidase; | |
| P0A9Q5 (ACCD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Acetyl-coenzyme A carboxylase carboxyl transferase subunit beta; | |
| P22564 (RIHC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Non-specific ribonucleoside hydrolase RihC; Purine/pyrimidine ribonucleoside hydrolase; | |
| P76146 (YNEE_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Voltage-dependent anion channel-forming protein YneE; | |
| P30864 (YAFC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized HTH-type transcriptional regulator YafC; | |
| P77588 (YDEQ_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized fimbrial-like protein YdeQ; | |
| P37672 (DLGD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | 2,3-diketo-L-gulonate reductase; 3-dehydro-L-gulonate 2-dehydrogenase; | |
| P77315 (YPHD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Probable ABC transporter permease protein YphD; | |
| P28631 (HOLB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | DNA polymerase III subunit delta'; | |
| P77737 (OPPF_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Oligopeptide transport ATP-binding protein OppF; | |
| P37313 (DPPF_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Dipeptide transport ATP-binding protein DppF; | |
| P0AD12 (YEEZ_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein YeeZ; | |
| P27129 (WAAJ_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Lipopolysaccharide 1,2-glucosyltransferase; UDP-glucose:(glucosyl) LPS alpha 1,2-glucosyltransferase; | |
| P0AFK4 (POTB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Spermidine/putrescine transport system permease protein PotB; | |
| Q46857 (DKGA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Methylglyoxal reductase DkgA; 2,5-diketo-D-gluconic acid reductase A; AKR5C; Aldo-keto reductase YqhE; Beta-keto ester reductase; | |
| P75823 (LTAE_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Low specificity L-threonine aldolase; | |
| Q47539 (TAUC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Taurine transport system permease protein TauC; | |
| P75777 (YBHG_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | UPF0194 membrane protein YbhG; | |
| P39369 (YJHR_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putative uncharacterized protein YjhR; | |
| P32099 (LPLA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Lipoate-protein ligase A; Lipoate--protein ligase; | |
| P09147 (GALE_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | UDP-glucose 4-epimerase; Galactowaldenase; UDP-galactose 4-epimerase; | |
| P16700 (CYSP_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Thiosulfate-binding protein; | |
| P16682 (PHND_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Phosphonates-binding periplasmic protein; | |
| P46849 (RTCA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | RNA 3'-terminal phosphate cyclase; | |
| P0A8Y5 (YIDA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Sugar phosphatase YidA; | |
| P0CI31 (HCAB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | 3-phenylpropionate-dihydrodiol/cinnamic acid-dihydrodiol dehydrogenase; 2,3-dihydroxy-2,3-dihydrophenylpropionate dehydrogenase; 3-(cis-5,6-dihydroxycyclohexa-1,3-dien-1-yl)propanoate dehydrogenase; CI-dihydrodiol dehydrogenase; Cis-3-(2-carboxyethenyl)-3,5-cyclohexadiene-1,2-diol dehydrogenase; Cis-3-(2-carboxyethyl)-3,5-cyclohexadiene-1,2-diol dehydrogenase; PP-dihydrodiol dehydrogenase; | |
| P45523 (FKBA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | FKBP-type peptidyl-prolyl cis-trans isomerase FkpA; Rotamase; | |
| P37049 (YAEI_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Phosphodiesterase YaeI; | |
| P07649 (TRUA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | tRNA pseudouridine synthase A; tRNA pseudouridine(38-40) synthase; tRNA pseudouridylate synthase I; tRNA-uridine isomerase I; | |
| P77147 (YDHT_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YdhT; | |
| P77218 (EUTD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Phosphate acetyltransferase EutD; Ethanolamine utilization protein EutD; | |
| P0A962 (ASPG1_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | L-asparaginase 1; L-asparaginase I; L-asparagine amidohydrolase I; | |
| P24200 (MCRA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Type IV methyl-directed restriction enzyme EcoKMcrA; 5-methylcytosine-specific restriction enzyme A; | |
| P32177 (FDHD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Sulfur carrier protein FdhD; Sulfurtransferase FdhD; | |
| P0AFA9 (NIKC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Nickel transport system permease protein NikC; | |
| P16701 (CYST_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Sulfate transport system permease protein CysT; | |
| P45563 (XAPA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Purine nucleoside phosphorylase 2; Inosine-guanosine phosphorylase; Purine nucleoside phosphorylase II; Xanthosine phosphorylase; | |
| P37669 (WECH_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | O-acetyltransferase WecH; | |
| P77569 (MHPR_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | DNA-binding transcriptional activator MhpR; mhp operon transcriptional activator; | |
| P0ABZ1 (FLIG_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Flagellar motor switch protein FliG; | |
| P37772 (YJFF_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Inner membrane ABC transporter permease protein YjfF; | |
| P0ACC1 (PRMC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Release factor glutamine methyltransferase; M.EcoKHemKP; N5-glutamine methyltransferase PrmC; Protein release factor methylation C; Protein-(glutamine-N5) MTase PrmC; Protein-glutamine N-methyltransferase PrmC; | |
| P15286 (FLK_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Flagellar regulator Flk; Flagellar transcriptional regulator Flk; Fluke; | |
| P0A9B2 (G3P1_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Glyceraldehyde-3-phosphate dehydrogenase A; NAD-dependent glyceraldehyde-3-phosphate dehydrogenase; | |
| P18471 (TRAU_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein TraU; | |
| P0A8A4 (PSRP_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Phosphoenolpyruvate synthase regulatory protein; Pyruvate, water dikinase regulatory protein; | |
| P51025 (SFGH1_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | S-formylglutathione hydrolase FrmB; | |
| Q46834 (YGHF_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putative type II secretion system C-type protein YghF; Putative general secretion pathway C-type protein YghF; | |
| P27254 (ARGK_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | GTPase ArgK; G-protein chaperone; |
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 |
