| UniProtKB AC (Name) | UniProtKB Section | Organism | Description | |
|---|---|---|---|---|
| P0A6M4 (DTD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | D-aminoacyl-tRNA deacylase; D-tyrosyl RNA deacylase; D-tyrosyl-tRNA(Tyr) deacylase; Gly-tRNA(Ala) deacylase; Gly-tRNA(Gly) deacylase; | |
| P52127 (ABPA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Anti-bacteriophage protein A; | |
| P0AEC8 (DCUS_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Sensor histidine kinase DcuS; Fumarate sensor; | |
| P0C0L2 (OSMC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Peroxiredoxin OsmC; Osmotically-inducible protein C; | |
| P39363 (SGCA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putative phosphotransferase IIA component SgcA; Putative PTS system EIIA component; | |
| P0AG27 (YIBN_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YibN; | |
| P0A763 (NDK_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Nucleoside diphosphate kinase; Nucleoside-2-P kinase; | |
| Q9JMT9 (YUAA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YuaA; | |
| P03817 (MIOC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein MioC; | |
| P67762 (YHBP_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | UPF0306 protein YhbP; | |
| O52982 (YFJS_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Lipoprotein YfjS; | |
| P28905 (HOLC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | DNA polymerase III subunit chi; Accessory clamp loader complex subunit chi; Replication clamp loader subunit HolC; | |
| P0AAB2 (WZB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Low molecular weight protein-tyrosine-phosphatase Wzb; | |
| P0AGF2 (CSDE_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Sulfur acceptor protein CsdE; | |
| P09163 (YJAB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Peptidyl-lysine N-acetyltransferase YjaB; KAT; | |
| P77365 (YAFY_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Lipoprotein YafY; | |
| P00904 (TRPGD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Bifunctional protein TrpGD; Anthranilate synthase component 2; AS; ASII; 4.1.3.27; Anthranilate synthase, glutamine amidotransferase component; Anthranilate phosphoribosyltransferase; 2.4.2.18; | |
| P16681 (YJDN_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein YjdN; | |
| P0AFC3 (NUOA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | NADH-quinone oxidoreductase subunit A; NADH dehydrogenase I subunit A; NDH-1 subunit A; NUO1; | |
| P69824 (PTMA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Mannitol-specific cryptic phosphotransferase enzyme IIA component; EIIA-Mtl; EIII-Mtl; PTS system mannitol-specific EIIA component; | |
| P37766 (YDIF_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Acetate CoA-transferase YdiF; Short-chain acyl-CoA:acetate CoA-transferase; | |
| P33916 (YEJF_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Oligopeptide transport ATP-binding protein YejF; | |
| P52613 (FLIJ_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Flagellar FliJ protein; | |
| Q46791 (YGEK_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized response regulatory protein YgeK; | |
| P76261 (PDED_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Probable cyclic di-GMP phosphodiesterase PdeD; | |
| P76012 (YCGY_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YcgY; | |
| P23847 (DPPA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Dipeptide-binding protein; Periplasmic dipeptide transport protein; | |
| P37664 (YIAC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Peptidyl-lysine N-acetyltransferase YiaC; KAT; | |
| P76180 (YDGK_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Inner membrane protein YdgK; | |
| P36881 (YADI_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putative phosphotransferase enzyme IIA component YadI; Putative PTS system EIIA component; | |
| Q9S4X4 (YUBB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YubB; | |
| Q46863 (YGIS_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Probable deoxycholate-binding periplasmic protein YgiS; | |
| P37629 (YHIL_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putative uncharacterized protein YhiL; | |
| P77656 (YFDK_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YfdK; | |
| P71297 (YAGN_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YagN; | |
| P23843 (OPPA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Periplasmic oligopeptide-binding protein OppA; Polyamine-induced protein; | |
| P0AF43 (YJBB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putative inorganic phosphate export protein YjbB; | |
| P07018 (MCP4_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Methyl-accepting chemotaxis protein IV; Dipeptide chemoreceptor protein; | |
| P0A9C0 (GLPA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Anaerobic glycerol-3-phosphate dehydrogenase subunit A; | |
| P0DP90 (ILVG_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Acetolactate synthase isozyme 2 large subunit; ALS-II; Acetohydroxy-acid synthase II large subunit; | |
| P32705 (ACTP_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Cation/acetate symporter ActP; Acetate permease; Acetate transporter ActP; | |
| Q46868 (UBIK_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Ubiquinone biosynthesis accessory factor UbiK; | |
| P64479 (YDIZ_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YdiZ; | |
| Q02885 (YUBO_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YubO; | |
| P52119 (RATB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | UPF0125 protein RatB; | |
| Q9JMS2 (YUAS_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YuaS; | |
| P77519 (YDDL_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein YddL; | |
| P64461 (LSRG_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | (4S)-4-hydroxy-5-phosphonooxypentane-2,3-dione isomerase; Autoinducer 2-degrading protein LsrG; Phospho-(S)-4,5-dihydroxy-2,3-pentanedione isomerase; Phospho-AI-2 isomerase; | |
| P76165 (YDFX_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein YdfX; | |
| P52060 (YGGU_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | UPF0235 protein YggU; |
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 |
