| UniProtKB AC (Name) | UniProtKB Section | Organism | Description | |
|---|---|---|---|---|
| P27842 (YIGF_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YigF; | |
| P27843 (YIGG_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Inner membrane protein YigG; | |
| P0A790 (PAND_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Aspartate 1-decarboxylase; Aspartate alpha-decarboxylase; Aspartate 1-decarboxylase beta chain; Aspartate 1-decarboxylase alpha chain; | |
| P0ACN2 (YTFH_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized HTH-type transcriptional regulator YtfH; | |
| P24224 (ACPS_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Holo-[acyl-carrier-protein] synthase; 4'-phosphopantetheinyl transferase AcpS; | |
| P0ABC0 (ATPZ_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | ATP synthase protein I; | |
| P0AAV6 (YBGS_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YbgS; | |
| P0AG90 (SECD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein translocase subunit SecD; Sec translocon accessory complex subunit SecD; | |
| P05791 (ILVD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Dihydroxy-acid dehydratase; | |
| P33353 (YEHQ_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein YehQ; | |
| P06129 (BTUB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Vitamin B12 transporter BtuB; Cobalamin receptor; Outer membrane cobalamin translocator; | |
| P14081 (SELB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Selenocysteine-specific elongation factor; SelB translation factor; | |
| P23367 (MUTL_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | DNA mismatch repair protein MutL; | |
| P22525 (YCBB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Probable L,D-transpeptidase YcbB; | |
| P0A6Z1 (HSCA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Chaperone protein HscA; Hsc66; | |
| P52130 (RNLB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Antitoxin RnlB; | |
| P0AAR8 (YBAV_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YbaV; | |
| P05706 (PTHA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | PTS system glucitol/sorbitol-specific EIIA component; EIIA-Gut; EIII-Gut; Glucitol/sorbitol-specific phosphotransferase enzyme IIA component; | |
| P08722 (PTV3B_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | PTS system beta-glucoside-specific EIIBCA component; EIIBCA-Bgl; Beta-glucoside-specific phosphotransferase enzyme IIB component; 2.7.1.-; PTS system beta-glucoside-specific EIIB component; Beta-glucoside permease IIC component; PTS system beta-glucoside-specific EIIC component; Beta-glucoside-specific phosphotransferase enzyme IIA component; PTS system beta-glucoside-specific EIIA component; | |
| P77688 (YLBG_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein YlbG; | |
| P75796 (GSIA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Glutathione import ATP-binding protein GsiA; | |
| P77495 (PRPE_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Propionate--CoA ligase; Propionyl-CoA synthetase; | |
| P0AES0 (GSP_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Bifunctional glutathionylspermidine synthetase/amidase; Glutathionylspermidine amidase; Gsp amidase; 3.5.1.78; Glutathionylspermidine amidohydrolase [spermidine-forming]; Glutathionylspermidine synthetase; Gsp synthetase; 6.3.1.8; Glutathione:spermidine ligase [ADP-forming]; Gsp synthase; | |
| P15042 (DNLJ_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | DNA ligase; Polydeoxyribonucleotide synthase [NAD(+)]; | |
| P75906 (PGAB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Poly-beta-1,6-N-acetyl-D-glucosamine N-deacetylase; | |
| P23482 (HYFB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Hydrogenase-4 component B; | |
| P76562 (TMCA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | tRNA(Met) cytidine acetyltransferase TmcA; Lysine 2-hydroxyisobutyryltransferase; | |
| P0A8F8 (UVRB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | UvrABC system protein B; Excinuclease ABC subunit B; | |
| P42593 (FADH_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | 2,4-dienoyl-CoA reductase [(2E)-enoyl-CoA-producing]; 2,4-dienoyl-coenzyme A reductase [NADPH]; | |
| P71229 (HYFR_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | DNA-binding transcriptional activator HyfR; Hydrogenase-4 transcriptional activator; | |
| P75882 (GFCD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized lipoprotein GfcD; Group 4 capsule protein D homolog; | |
| P32689 (YJBH_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized lipoprotein YjbH; | |
| P0AET2 (HDEB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Acid stress chaperone HdeB; 10K-L protein; | |
| P0A9I8 (NIRD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Nitrite reductase (NADH) small subunit; | |
| P0AAU5 (YBFB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YbfB; | |
| P69808 (PTFB1_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | PTS system fructose-like EIIB component 1; Fructose-like phosphotransferase enzyme IIB component 1; | |
| P76169 (YNFA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | UPF0060 membrane protein YnfA; | |
| P64542 (YPEC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YpeC; | |
| P0A881 (TRPR_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Trp operon repressor; | |
| P75734 (CHIQ_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized lipoprotein ChiQ; | |
| P0A6V5 (GLPE_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Thiosulfate sulfurtransferase GlpE; Thiosulfate:cyanide sulfurtransferase; | |
| P39309 (YTFA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putative uncharacterized protein YtfA; | |
| P0AB43 (YCGL_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein YcgL; | |
| P76076 (YDBL_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Probable chaperone-like protein YdbL; | |
| P38521 (YGGL_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YggL; | |
| P08245 (YCIH_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YciH; | |
| P76115 (PQQU_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Pyrroloquinoline quinone transporter; TonB-dependent receptor PqqU; | |
| P45537 (YHFK_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YhfK; | |
| P21169 (DCOR_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Constitutive ornithine decarboxylase; | |
| P69937 (GDX_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Guanidinium exporter; Quaternary ammonium compound-resistance protein SugE; |
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 2025_04 that was used for the most up to date SWISS-MODEL Repository.
| Proteins in proteome | Sequences modelled | Models |
| 4,402 | 3,751 | 6,271 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3,702 | 1,646 | 131 | 486 | 19 | 147 | 9 | 57 | 4 | 19 | 2 | 16 | 6 | 1 | 1 | 2 | 1 | 11 | 1 | 3 | 1 | 1 | 1 | 1 | 1 | 2 |
