| UniProtKB AC (Name) | UniProtKB Section | Organism | Description | |
|---|---|---|---|---|
| P37691 (YIBQ_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YibQ; | |
| P23872 (AES_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Acetyl esterase; EcE; | |
| P0ABD5 (ACCA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Acetyl-coenzyme A carboxylase carboxyl transferase subunit alpha; | |
| P37146 (RIR4_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Ribonucleoside-diphosphate reductase 2 subunit beta; R2F protein; Ribonucleotide reductase 2; | |
| P0AA39 (RLUC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Ribosomal large subunit pseudouridine synthase C; 23S rRNA pseudouridine(955/2504/2580) synthase; rRNA pseudouridylate synthase C; rRNA-uridine isomerase C; | |
| P29131 (FTSN_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Cell division protein FtsN; | |
| P75853 (SSUA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putative aliphatic sulfonates-binding protein; | |
| P24173 (WAAC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Lipopolysaccharide heptosyltransferase 1; ADP-heptose:lipopolysaccharide heptosyltransferase I; | |
| P24205 (LPXM_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Lipid A biosynthesis myristoyltransferase; Kdo(2)-lauroyl-lipid IV(A) myristoyltransferase; | |
| P76482 (YFBL_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YfbL; | |
| P0AG93 (SECF_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein translocase subunit SecF; Sec translocon accessory complex subunit SecF; | |
| P31463 (YIDZ_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | HTH-type transcriptional regulator YidZ; | |
| P0ABK5 (CYSK_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Cysteine synthase A; O-acetylserine (thiol)-lyase A; O-acetylserine sulfhydrylase A; S-carboxymethylcysteine synthase; Sulfate starvation-induced protein 5; | |
| P69797 (PTNAB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | PTS system mannose-specific EIIAB component; EIIAB-Man; EIII-Man; Mannose-specific phosphotransferase enzyme IIA component; PTS system mannose-specific EIIA component; Mannose-specific phosphotransferase enzyme IIB component; PTS system mannose-specific EIIB component; | |
| P76291 (CMOB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | tRNA U34 carboxymethyltransferase; | |
| P0AD57 (ISPB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Octaprenyl diphosphate synthase; All-trans-octaprenyl-diphosphate synthase; Octaprenyl pyrophosphate synthase; | |
| P32176 (FDOG_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Formate dehydrogenase-O major subunit; Aerobic formate dehydrogenase major subunit; FDH-Z subunit alpha; Formate dehydrogenase-O subunit alpha; | |
| P75901 (EFEU_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putative inactive ferrous iron permease EfeU; Putative Fe(2+) ion permease EfeU; | |
| P39901 (YBFI_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putative uncharacterized protein YbfI; | |
| P45766 (YHDW_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putative amino-acid ABC transporter-binding protein YhdW; | |
| P37003 (YBFG_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putative uncharacterized protein YbfG; | |
| P07658 (FDHF_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Formate dehydrogenase H; Formate dehydrogenase-H subunit alpha; Formate-hydrogen-lyase-linked, selenocysteine-containing polypeptide; | |
| P24183 (FDNG_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Formate dehydrogenase, nitrate-inducible, major subunit; Anaerobic formate dehydrogenase major subunit; Formate dehydrogenase-N subunit alpha; | |
| P33369 (MDTQ_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putative multidrug resistance outer membrane protein MdtQ; | |
| P58095 (YPJI_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putative UPF0401 protein YpjI; | |
| P76000 (YCGI_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putative uncharacterized protein YcgI; | |
| P0ABT5 (DUSB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | tRNA-dihydrouridine synthase B; | |
| P76419 (YEGV_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized sugar kinase YegV; | |
| P42601 (ALX_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Manganese exporter Alx; | |
| P76254 (CNTB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Carnitine monooxygenase reductase subunit; Carnitine monooxygenase beta subunit; | |
| P60716 (LIPA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Lipoyl synthase; Lip-syn; Lipoate synthase; Lipoic acid synthase; Sulfur insertion protein LipA; | |
| P17115 (GUTQ_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Arabinose 5-phosphate isomerase GutQ; Phosphosugar aldol-ketol isomerase; | |
| P06709 (BIRA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Bifunctional ligase/repressor BirA; Biotin operon repressor; Biotin--[acetyl-CoA-carboxylase] ligase; Biotin--protein ligase; Biotin-[acetyl-CoA carboxylase] synthetase; | |
| P0A6V8 (GLK_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Glucokinase; Glucose kinase; | |
| P39314 (YTFF_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Inner membrane protein YtfF; | |
| P21437 (GLPX2_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Fructose-1,6-bisphosphatase 2 class 2; D-fructose-1,6-bisphosphate 1-phosphohydrolase 2 class 2; | |
| P0AGH3 (SAPB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putrescine export system permease protein SapB; | |
| P0AA73 (YHBE_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized inner membrane transporter YhbE; | |
| P37595 (IAAA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Isoaspartyl peptidase; Beta-aspartyl-peptidase; EcAIII; Isoaspartyl dipeptidase; Isoaspartyl peptidase subunit alpha; Isoaspartyl peptidase subunit beta; | |
| P0AGI1 (RBSC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Ribose import permease protein RbsC; | |
| P29208 (MENC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | o-succinylbenzoate synthase; 4-(2'-carboxyphenyl)-4-oxybutyric acid synthase; o-succinylbenzoic acid synthase; | |
| Q47537 (TAUA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Taurine-binding periplasmic protein; Sulfate starvation-induced protein 1; | |
| P75954 (YCFS_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Probable L,D-transpeptidase YcfS; | |
| P23871 (HEMH_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Ferrochelatase; Heme synthase; Protoheme ferro-lyase; | |
| P77515 (STFQ_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Prophage side tail fiber protein homolog StfQ; Side tail fiber protein homolog from lambdoid prophage Qin; | |
| P0A8K1 (PSD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Phosphatidylserine decarboxylase proenzyme; Phosphatidylserine decarboxylase alpha chain; Phosphatidylserine decarboxylase beta chain; | |
| P77757 (ARNC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Undecaprenyl-phosphate 4-deoxy-4-formamido-L-arabinose transferase; Polymyxin resistance protein PmrF; Undecaprenyl-phosphate Ara4FN transferase; | |
| P75824 (HCR_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | NADH oxidoreductase HCR; | |
| P76215 (ASTE_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Succinylglutamate desuccinylase; | |
| P0AGB0 (SERB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Phosphoserine phosphatase; O-phosphoserine phosphohydrolase; |
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 |
