| UniProtKB AC (Name) | UniProtKB Section | Organism | Description | |
|---|---|---|---|---|
| P75855 (ELFA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Fimbrial subunit ElfA; | |
| P39389 (YJIR_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized HTH-type transcriptional regulator YjiR; | |
| P64634 (HOFN_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | DNA utilization protein HofN; | |
| P51024 (YAIL_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YaiL; | |
| P13857 (RIML_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Ribosomal-protein-serine acetyltransferase; Acetylating enzyme for N-terminus of ribosomal protein L7/L12; | |
| P76499 (YFCP_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized fimbrial-like protein YfcP; | |
| P27375 (YJAZ_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein YjaZ; Heat shock protein C; | |
| P77221 (YAHG_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YahG; | |
| P78061 (PUUA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Gamma-glutamylputrescine synthetase PuuA; Glutamate--putrescine ligase; | |
| P0ACB0 (DNAB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Replicative DNA helicase DnaB; DNA 5'-3' helicase DnaB; | |
| P11553 (FUCK_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | L-fuculokinase; L-fuculose kinase; | |
| P37349 (DHAM_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | PEP-dependent dihydroxyacetone kinase, phosphoryl donor subunit DhaM; Dihydroxyacetone kinase subunit M; | |
| P0AED9 (DCM_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | DNA-cytosine methyltransferase; Type II methyltransferase M.EcoKDcm; | |
| P0AE24 (ARAE_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Arabinose-proton symporter; Arabinose transporter; | |
| P00914 (PHR_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Deoxyribodipyrimidine photo-lyase; DNA photolyase; Photoreactivating enzyme; | |
| P30143 (YAAJ_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized transporter YaaJ; | |
| P32128 (YIHF_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YihF; | |
| P75835 (YCAM_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Inner membrane transporter YcaM; | |
| P09832 (GLTD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Glutamate synthase [NADPH] small chain; Glutamate synthase subunit beta; NADPH-GOGAT; | |
| P37195 (DCTR_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | HTH-type transcriptional regulator DctR; | |
| P23845 (CYSN_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Sulfate adenylyltransferase subunit 1; ATP-sulfurylase large subunit; Sulfate adenylate transferase; | |
| P52101 (GLRK_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Sensor histidine kinase GlrK; | |
| P0A8J2 (DNAT_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Replication restart protein DnaT; Primosomal protein DnaT; Primosomal protein i; | |
| P39264 (FIMI_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Fimbrin-like protein FimI; | |
| P0AB35 (YCFJ_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YcfJ; | |
| P46122 (YAJI_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized lipoprotein YajI; | |
| P11865 (YHAB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YhaB; | |
| P37019 (CLCA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | H(+)/Cl(-) exchange transporter ClcA; ClC-ec1; | |
| P75919 (CLSC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Cardiolipin synthase C; | |
| P36672 (PTTBC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | PTS system trehalose-specific EIIBC component; EIIBC-Tre; Trehalose-specific phosphotransferase enzyme IIB component; 2.7.1.201; PTS system trehalose-specific EIIB component; Trehalose permease IIC component; PTS system trehalose-specific EIIC component; | |
| P02921 (MELB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Melibiose permease; Melibiose carrier; Melibiose transporter; Melibiose/cation symporter; Na+ (Li+)/melibiose symporter; Thiomethylgalactoside permease II; | |
| P08401 (CREC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Sensor protein CreC; | |
| P0A8G3 (UXAC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uronate isomerase; Glucuronate isomerase; Uronic isomerase; | |
| P0AAE0 (CYCA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | D-serine/D-alanine/glycine transporter; Amino acid carrier CycA; | |
| P0AD61 (KPYK1_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Pyruvate kinase I; PK-1; | |
| P11988 (BGLB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | 6-phospho-beta-glucosidase BglB; Phospho-beta-glucosidase B; | |
| P0A710 (YCIB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Inner membrane-spanning protein YciB; | |
| P76573 (YFGI_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YfgI; | |
| P0A901 (BLC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Outer membrane lipoprotein Blc; | |
| P0ABA4 (ATPD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | ATP synthase subunit delta; ATP synthase F(1) sector subunit delta; F-type ATPase subunit delta; | |
| P0A8D6 (YMDB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | O-acetyl-ADP-ribose deacetylase; Regulator of RNase III activity; | |
| P76159 (LYSQ_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Probable prophage lysozyme; Endolysin; Lysis protein; Muramidase; Probable lysozyme from lambdoid prophage Qin; | |
| P75822 (YBJT_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putative NAD(P)-binding protein YbjT; | |
| P41067 (TRAB1_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein TraB; | |
| P0A6I9 (COAE_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Dephospho-CoA kinase; Dephosphocoenzyme A kinase; | |
| P0ABZ6 (SURA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Chaperone SurA; Peptidyl-prolyl cis-trans isomerase SurA; Rotamase SurA; Survival protein A; | |
| P68644 (FIXC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein FixC; | |
| P27862 (YIGZ_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | IMPACT family member YigZ; | |
| P0ACZ4 (EVGA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | DNA-binding transcriptional activator EvgA; | |
| P0AAA1 (YAGU_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Inner membrane protein YagU; |
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 |
