| UniProtKB AC (Name) | UniProtKB Section | Organism | Description | |
|---|---|---|---|---|
| P45759 (GSPE_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putative type II secretion system protein E; Putative general secretion pathway protein E; Type II traffic warden ATPase; | |
| P26612 (AMY2_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Cytoplasmic alpha-amylase; 1,4-alpha-D-glucan glucanohydrolase; | |
| P77522 (SUFB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Iron-sulfur cluster assembly protein SufB; | |
| P42604 (UXAA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Altronate dehydratase; D-altronate hydro-lyase; | |
| P0AFF6 (NUSA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Transcription termination/antitermination protein NusA; N utilization substance protein A; Transcription termination/antitermination L factor; | |
| P33596 (RECX_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Regulatory protein RecX; Protein OraA; | |
| P02930 (TOLC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Outer membrane protein TolC; Multidrug efflux pump subunit TolC; Outer membrane factor TolC; | |
| P75742 (DTPD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Dipeptide permease D; | |
| P21362 (YCIF_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein YciF; | |
| P76540 (EUTK_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Bacterial microcompartment shell protein EutK; Ethanolamine utilization protein EutK; | |
| P28369 (RFH_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putative peptide chain release factor homolog; | |
| P0A7J3 (RL10_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Large ribosomal subunit protein uL10; 50S ribosomal protein L10; 50S ribosomal protein L8; | |
| P78285 (LYSD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Lysozyme RrrD; Endolysin; Lysis protein; Muramidase; | |
| P76158 (RZPQ_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein RzpQ; | |
| P77219 (YAHC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YahC; | |
| P0AFZ3 (SSPB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Stringent starvation protein B; Adapter protein SspB; Specificity-enhancing factor SspB; | |
| P26602 (UBIC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Chorismate pyruvate-lyase; | |
| P0A6G3 (PNCC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Nicotinamide-nucleotide amidohydrolase PncC; NMN deamidase; Nicotinamide-nucleotide amidase; | |
| P76270 (MSRC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Free methionine-R-sulfoxide reductase; | |
| P31443 (YIDF_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YidF; | |
| Q47152 (RAYT_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | REP-associated tyrosine transposase; | |
| P39902 (SPRT_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein SprT; | |
| P76080 (PAAD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putative 1,2-phenylacetyl-CoA epoxidase, subunit D; 1,2-phenylacetyl-CoA monooxygenase, subunit D; | |
| P76237 (DGCJ_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Probable diguanylate cyclase DgcJ; | |
| P41036 (NANT_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Sialic acid transporter NanT; Sialic acid permease; Sialic acid/H(+) symporter; | |
| P0ACS5 (ZNTR_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | HTH-type transcriptional regulator ZntR; Zn(II)-responsive regulator of zntA; | |
| P0ABV2 (EXBD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Biopolymer transport protein ExbD; | |
| P0AF63 (NSRR_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | HTH-type transcriptional repressor NsrR; | |
| P0AB96 (ARSC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Arsenate reductase; Arsenical pump modifier; | |
| P0AAA9 (ZRAP_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Signaling pathway modulator ZraP; Zinc resistance-associated protein; Zra periplasmic repressor partner; Zra system accessory protein ZraP; | |
| P76539 (YPEA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Acetyltransferase YpeA; | |
| P75680 (INSO1_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putative transposase InsO for insertion sequence element IS911A; | |
| P0C243 (YUBJ_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YubJ; | |
| P77136 (YQEK_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YqeK; | |
| Q46795 (YGEO_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putative uncharacterized protein YgeO; | |
| P52006 (NUDI_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Nucleoside triphosphatase NudI; Nucleotide diphosphatase NudI; Pyrimidine deoxynucleoside triphosphate diphosphatase; dCTP diphosphatase; dTTP diphosphatase; dUTP diphosphatase; | |
| P37661 (EPTB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Kdo(2)-lipid A phosphoethanolamine 7''-transferase; Phosphoethanolamine transferase EptB; | |
| P08142 (ILVB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Acetolactate synthase isozyme 1 large subunit; Acetohydroxy-acid synthase I large subunit; | |
| P0AG11 (UMUD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein UmuD; DNA polymerase V; Protein UmuD'; | |
| P0A780 (NUSB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Transcription antitermination protein NusB; Antitermination factor NusB; N utilization substance protein B; | |
| P08204 (ARAB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Ribulokinase; | |
| P0AGG4 (THIO2_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Thioredoxin 2; Protein-disulfide reductase; | |
| P0A6E6 (ATPE_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | ATP synthase epsilon chain; ATP synthase F1 sector epsilon subunit; F-ATPase epsilon subunit; | |
| P04982 (RBSD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | D-ribose pyranase; | |
| P03825 (GSPB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putative general secretion pathway protein B; | |
| P17994 (YFAA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YfaA; | |
| P31826 (YDDA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Inner membrane ABC transporter ATP-binding protein YddA; CDS102; | |
| P77318 (YDEN_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized sulfatase YdeN; | |
| P16431 (HYCE_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Formate hydrogenlyase subunit 5; Hydrogenase-3 component E; | |
| P0A9W3 (ETTA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Energy-dependent translational throttle protein EttA; Translational regulatory factor EttA; |
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 |
