| UniProtKB AC (Name) | UniProtKB Section | Organism | Description | |
|---|---|---|---|---|
| P03012 (TNR1_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Transposon gamma-delta resolvase; Transposon Tn1000 resolvase; | |
| P18310 (SSBF_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Plasmid-derived single-stranded DNA-binding protein; Helix-destabilizing protein; | |
| P18035 (TRBB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein TrbB; | |
| P18473 (TRBC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Periplasmic protein TrbC; | |
| P41067 (TRAB1_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein TraB; | |
| Q9JMR5 (YUBH_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YubH; | |
| P24082 (TRAN_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Mating pair stabilization protein TraN; | |
| Q9S4X0 (YUBF_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YubF; | |
| Q9JMS1 (YUAT_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YuaT; | |
| Q9S4X4 (YUBB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YubB; | |
| P10031 (PSIB1_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein PsiB; | |
| P0AE24 (ARAE_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Arabinose-proton symporter; Arabinose transporter; | |
| P0AE14 (AMPE_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein AmpE; | |
| P0AAT4 (YBDG_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Mechanosensing system component YbdG; Mechanosensitive channel homolog YbdG; | |
| P0ADR8 (PPNN_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Pyrimidine/purine nucleotide 5'-monophosphate nucleosidase; AMP nucleosidase; CMP nucleosidase; GMP nucleosidase; IMP nucleosidase; UMP nucleosidase; dTMP nucleosidase; | |
| P0ADP5 (BIOP_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Biotin transporter; Plasmamembrane biotin transport protein; | |
| P0ADW6 (YHCC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein YhcC; | |
| P0ADW3 (ZAPG_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Z-ring associated protein G; Cell division protein ZapG; LPS assembly protein LapD; | |
| P0ACL0 (GLPR_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Glycerol-3-phosphate regulon repressor; | |
| P0ADD5 (YJJP_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Probable succinate transporter subunit YjjP; | |
| P0ADH5 (FIMB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Type 1 fimbriae regulatory protein FimB; | |
| P0AD12 (YEEZ_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein YeeZ; | |
| P0ACK8 (FUCR_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | L-fucose operon activator; | |
| P0AD03 (LETA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Lipophilic envelope-spanning tunnel protein A; Intermembrane transport protein LetA; | |
| P0ADV5 (YHBW_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Luciferase-like monooxygenase; | |
| P0ADU7 (YQIB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YqiB; | |
| P0ADN0 (VIAA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Regulatory protein ViaA; VWA interacting with AAA+ ATPase; | |
| P0AD61 (KPYK1_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Pyruvate kinase I; PK-1; | |
| P0ACS9 (ACRR_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | HTH-type transcriptional regulator AcrR; DNA-binding transcriptional repressor AcrR; acrAB operon repressor; | |
| P0AD70 (AMPH_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | D-alanyl-D-alanine-carboxypeptidase/endopeptidase AmpH; DD-alanine-endopeptidase; DD-carboxypeptidase; Penicillin-binding protein AmpH; | |
| P0ADS9 (YGGN_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YggN; | |
| P0ADU5 (YGIW_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein YgiW; | |
| P0ADQ2 (FABY_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Probable acyltransferase FabY; | |
| P0ADX9 (RSMD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Ribosomal RNA small subunit methyltransferase D; 16S rRNA m2G966 methyltransferase; rRNA (guanine-N(2)-)-methyltransferase; | |
| P0AE26 (ARAH_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | L-arabinose transport system permease protein AraH; | |
| P0ACR7 (YFER_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized HTH-type transcriptional regulator YfeR; | |
| P0ADI7 (YECD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Isochorismatase family protein YecD; | |
| P0ACN7 (CYTR_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | HTH-type transcriptional repressor CytR; CytR antiactivator; CytR repressor; Cytidine repressor; | |
| P0AC47 (FRDB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Fumarate reductase iron-sulfur subunit; Quinol-fumarate reductase iron-sulfur subunit; | |
| P0AAF3 (ARAG_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Arabinose import ATP-binding protein AraG; | |
| P0ADI9 (YHHN_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized membrane protein YhhN; | |
| P0ADV7 (MLAC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Intermembrane phospholipid transport system binding protein MlaC; | |
| P0ACL7 (LLDR_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putative L-lactate dehydrogenase operon regulatory protein; | |
| P0AAG5 (MDLB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Multidrug resistance-like ATP-binding protein MdlB; | |
| P0AE28 (AROM_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Protein AroM; | |
| P0ADH7 (FIME_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Type 1 fimbriae regulatory protein FimE; | |
| P0ADX7 (YHHA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Uncharacterized protein YhhA; ORFQ; | |
| P0ACQ4 (OXYR_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | DNA-binding transcriptional dual regulator OxyR; Hydrogen peroxide-inducible genes activator; Morphology and auto-aggregation control protein; | |
| P0ADR6 (RLMM_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Ribosomal RNA large subunit methyltransferase M; 23S rRNA (cytidine2498-2'-O)-methyltransferase; 23S rRNA 2'-O-ribose methyltransferase RlmM; | |
| P0AC94 (GNTP_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | High-affinity gluconate transporter; Gluconate permease 3; Gnt-III system; |
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_03 that was used for the most up to date SWISS-MODEL Repository.
| Proteins in proteome | Sequences modelled | Models |
| 4,403 | 3,773 | 6,329 |
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 | 23-mer | 24-mer | 25-mer | 26-mer | 30-mer | 34-mer | 36-mer | 40-mer | 44-mer | 48-mer | 60-mer |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3,733 | 1,670 | 133 | 485 | 21 | 141 | 12 | 55 | 3 | 20 | 2 | 17 | 6 | 1 | 2 | 1 | 2 | 1 | 1 | 11 | 1 | 3 | 1 | 1 | 1 | 1 | 1 | 1 | 2 |
