| UniProtKB AC (Name) | UniProtKB Section | Organism | Description | |
|---|---|---|---|---|
| P0AFJ7 (PITA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Low-affinity inorganic phosphate transporter PitA; Metal phosphate:H(+) symporter PitA; | |
| P43676 (PITB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Low-affinity inorganic phosphate transporter PitB; | |
| P0AA47 (PLAP_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Low-affinity putrescine importer PlaP; Putrescine low affinity permease; | |
| P37671 (PLAR_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | HTH-type transcriptional repressor PlaR; Regulator of plant utilization; YiaKLMNOPQRS operon repressor; | |
| P07000 (PLDB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Lysophospholipase L2; Lecithinase B; | |
| P76002 (PLIG_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Inhibitor of g-type lysozyme; | |
| P67080 (PLPHP_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Pyridoxal phosphate homeostasis protein; | |
| P0A7A7 (PLSB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Glycerol-3-phosphate acyltransferase; | |
| P26647 (PLSC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | 1-acyl-sn-glycerol-3-phosphate acyltransferase; Lysophosphatidic acid acyltransferase; Phosphatidic acid synthase; | |
| P27247 (PLSX_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Phosphate acyltransferase; Acyl-ACP phosphotransacylase; Acyl-[acyl-carrier-protein]--phosphate acyltransferase; Phosphate-acyl-ACP acyltransferase; | |
| P60782 (PLSY_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Probable glycerol-3-phosphate acyltransferase; G3P acyltransferase; Lysophosphatidic acid synthase; | |
| P0AFK0 (PMBA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Metalloprotease PmbA; Protein TldE; | |
| P37590 (PMRD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Signal transduction protein PmrD; BasR post-transcriptional activator; Polymyxin resistance protein PmrD; | |
| G3MTW7 (PMRR_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putative membrane protein PmrR; | |
| P21369 (PNCA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Nicotinamidase; Nicotinamide deamidase; Pyrazinamidase; | |
| P18133 (PNCB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Nicotinate phosphoribosyltransferase; | |
| P0A6G3 (PNCC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Nicotinamide-nucleotide amidohydrolase PncC; NMN deamidase; Nicotinamide-nucleotide amidase; | |
| P05055 (PNP_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Polyribonucleotide nucleotidyltransferase; Polynucleotide phosphorylase; | |
| P07001 (PNTA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | NAD(P) transhydrogenase subunit alpha; Nicotinamide nucleotide transhydrogenase subunit alpha; Pyridine nucleotide transhydrogenase subunit alpha; | |
| P0AB67 (PNTB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | NAD(P) transhydrogenase subunit beta; Nicotinamide nucleotide transhydrogenase subunit beta; Pyridine nucleotide transhydrogenase subunit beta; | |
| P0AFK2 (PNUC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Nicotinamide riboside transporter PnuC; | |
| P69874 (POTA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Spermidine/putrescine import ATP-binding protein PotA; | |
| P0AFK4 (POTB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Spermidine/putrescine transport system permease protein PotB; | |
| P0AFK6 (POTC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Spermidine/putrescine transport system permease protein PotC; | |
| P0AFK9 (POTD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Spermidine/putrescine-binding periplasmic protein; | |
| P0AAF1 (POTE_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putrescine transporter PotE; Putrescine-proton symporter / putrescine-ornithine antiporter; | |
| P31133 (POTF_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putrescine-binding periplasmic protein PotF; | |
| P31134 (POTG_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putrescine transport ATP-binding protein PotG; | |
| P31135 (POTH_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putrescine transport system permease protein PotH; | |
| P0AFL1 (POTI_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Putrescine transport system permease protein PotI; | |
| P07003 (POXB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Pyruvate dehydrogenase [ubiquinone]; Pyruvate oxidase; Pyruvate:ubiquinone-8 oxidoreductase; | |
| P07102 (PPA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Phytase AppA; 6-phytase; Histidine acid phosphatase phytase; Myo-inositol hexakisphosphate phosphohydrolase; Phosphoanhydride phosphatase; pH 2.5 acid phosphatase; | |
| P00634 (PPB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Alkaline phosphatase; | |
| P33554 (PPDA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Prepilin peptidase-dependent protein A; | |
| P08371 (PPDB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Prepilin peptidase-dependent protein B; | |
| P08372 (PPDC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Prepilin peptidase-dependent protein C; | |
| P36647 (PPDD_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Prepilin peptidase-dependent protein D; | |
| P0AFL3 (PPIA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Peptidyl-prolyl cis-trans isomerase A; Cyclophilin A; Rotamase A; | |
| P23869 (PPIB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Peptidyl-prolyl cis-trans isomerase B; Rotamase B; | |
| P0A9L5 (PPIC_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Peptidyl-prolyl cis-trans isomerase C; Par10; Parvulin; Rotamase C; | |
| P0ADY1 (PPID_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Periplasmic chaperone PpiD; Periplasmic folding chaperone; | |
| P0A7B1 (PPK1_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Polyphosphate kinase; ATP-polyphosphate phosphotransferase; Polyphosphoric acid kinase; | |
| 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; | |
| P0C037 (PPNP_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Pyrimidine/purine nucleoside phosphorylase; Adenosine phosphorylase; Cytidine phosphorylase; Guanosine phosphorylase; Inosine phosphorylase; Thymidine phosphorylase; Uridine phosphorylase; Xanthosine phosphorylase; | |
| Q46836 (PPPA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Prepilin peptidase PppA; | |
| P23538 (PPSA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Phosphoenolpyruvate synthase; Pyruvate, water dikinase; | |
| P31992 (PPTA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Tautomerase PptA; | |
| P0AFL6 (PPX_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Exopolyphosphatase; Metaphosphatase; | |
| P0AFL9 (PQIA_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Intermembrane transport protein PqiA; Paraquat-inducible protein A; | |
| P43671 (PQIB_ECOLI) | Swiss-Prot | Escherichia coli (strain K12) | Intermembrane transport protein PqiB; Paraquat-inducible protein B; |
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 |
