| UniProtKB AC (Name) | UniProtKB Section | Organism | Description | |
|---|---|---|---|---|
| P42640 (YHBX_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putative transferase YhbX; | |
| P33224 (AIDB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putative acyl-CoA dehydrogenase AidB; | |
| P0A998 (FTNA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Bacterial non-heme ferritin; Ferritin-1; | |
| Q46808 (YQEB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YqeB; | |
| P37627 (YHIJ_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YhiJ; | |
| P32703 (YJCE_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized Na(+)/H(+) exchanger YjcE; | |
| P75825 (HCP_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Hydroxylamine reductase; Hybrid-cluster protein; Prismane protein; | |
| P0A738 (MOAC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Cyclic pyranopterin monophosphate synthase; Molybdenum cofactor biosynthesis protein C; | |
| P76335 (YEDS_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putative outer membrane protein YedS; | |
| P76502 (SIXA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Phosphohistidine phosphatase SixA; RX6; | |
| P69789 (PTXB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Phosphotransferase enzyme IIB component GlvB; PTS system EIIB component; | |
| P76473 (ARNT_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Undecaprenyl phosphate-alpha-4-amino-4-deoxy-L-arabinose arabinosyl transferase; 4-amino-4-deoxy-L-arabinose lipid A transferase; Lipid IV(A) 4-amino-4-deoxy-L-arabinosyltransferase; Polymyxin resistance protein PmrK; Undecaprenyl phosphate-alpha-L-Ara4N transferase; | |
| P0AEU7 (SKP_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Chaperone protein Skp; DNA-binding 17 kDa protein; Histone-like protein HLP-1; Seventeen kilodalton protein; | |
| P07024 (USHA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein UshA; UDP-sugar hydrolase; 3.6.1.45; UDP-sugar diphosphatase; UDP-sugar pyrophosphatase; 5'-nucleotidase; 5'-NT; 3.1.3.5; | |
| P77754 (SPY_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Periplasmic chaperone Spy; Spheroplast protein Y; | |
| P11291 (YZCX_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein YzcX; CyaX; O161; | |
| P28697 (MBIA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein MbiA; Modifier of biofilm; | |
| P0A8R0 (RRAA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Regulator of ribonuclease activity A; | |
| P0AAT9 (YBEL_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YbeL; | |
| P60872 (YIDE_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putative transport protein YidE; | |
| P0A9W3 (ETTA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Energy-dependent translational throttle protein EttA; Translational regulatory factor EttA; | |
| P75980 (BEEE_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein BeeE; | |
| 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; | |
| P61714 (RISB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | 6,7-dimethyl-8-ribityllumazine synthase; | |
| P0ACE0 (MBHM_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Hydrogenase-2 large chain; Membrane-bound hydrogenase 2 large subunit; NiFe hydrogenase; | |
| P0A898 (YBEY_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Endoribonuclease YbeY; | |
| P52135 (YFJT_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YfjT; | |
| P0A905 (SLYB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Outer membrane lipoprotein SlyB; | |
| P77162 (YKFB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YkfB; | |
| P0A9F1 (MNTR_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Transcriptional regulator MntR; Manganese transport regulator; | |
| P0A8I8 (RLMH_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Ribosomal RNA large subunit methyltransferase H; 23S rRNA (pseudouridine1915-N3)-methyltransferase; 23S rRNA m3Psi1915 methyltransferase; rRNA (pseudouridine-N3-)-methyltransferase RlmH; | |
| P31468 (CBRB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Inner membrane protein CbrB; CreB-regulated gene B protein; | |
| P37673 (YIAL_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein YiaL; | |
| P0AG86 (SECB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein-export protein SecB; Chaperone SecB; | |
| P0A7Y4 (RNH_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Ribonuclease HI; Ribonuclease H; | |
| P26218 (BGLH_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Cryptic outer membrane porin BglH; | |
| P21362 (YCIF_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein YciF; | |
| P28369 (RFH_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putative peptide chain release factor homolog; | |
| P52127 (ABPA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Anti-bacteriophage protein A; | |
| P77348 (MPPA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Periplasmic murein peptide-binding protein MppA; Murein peptide permease A; | |
| P23869 (PPIB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Peptidyl-prolyl cis-trans isomerase B; Rotamase B; | |
| P75893 (RUTF_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | FMN reductase (NADH) RutF; FMN reductase; NADH-flavin reductase RutF; NADH:flavin oxidoreductase; | |
| P37182 (HYBD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Hydrogenase 2 maturation protease; | |
| P00804 (LSPA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Lipoprotein signal peptidase; Prolipoprotein signal peptidase; Signal peptidase II; | |
| P75737 (YBFP_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized lipoprotein YbfP; | |
| P18390 (YJJA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YjjA; Protein P-18; | |
| P67244 (YQHA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | UPF0114 protein YqhA; | |
| P0A9C0 (GLPA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Anaerobic glycerol-3-phosphate dehydrogenase subunit A; | |
| P76510 (YFDN_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YfdN; |
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 |
