KpATCC43816 Protein target profile
aminotransferase class I and II family protein
Accession: VK055_0996
Target candidate with partial support; inspect missing evidence before prioritizing.
Automated synthesis of the evidence currently loaded. Review the underlying records before prioritizing this protein.
Main supporting evidence
Risks to review
Evidence coverage
Terms and data sources used on this page
PDB: experimentally determined structures from the Protein Data Bank. These are the strongest structural evidence, but may cover only part of the protein.
AlphaFold DB model: a precomputed predicted structure downloaded from AlphaFold Database/UniProt, not an experiment performed here.
ColabFold model: a predicted structure generated for this workspace; interpret it with coverage and confidence.
pLDDT: confidence score for predicted structures. High values support local geometry; low values mean the region should not drive pocket interpretation.
FPocket / P2Rank: software tools that predict possible ligand-binding pockets on a 3D structure. They are useful screening signals, not experimental validation.
Druggability: a pocket-based estimate of whether a small molecule could bind productively. It does not mean a drug already exists.
PDB ligand: a compound observed in an experimental structure. Direct same-protein records are stronger than homolog-transferred records.
ChEMBL: a public database of measured compound bioactivity. Direct entries are stronger than entries transferred from similar proteins.
ZINC: a purchasable-compound database. Here it marks proposed candidates from chemical similarity, not measured binders.
LigQ / LigQ_2: an internal Target pipeline step that gathers PDB, ChEMBL, and ZINC ligand evidence for each protein.
Off-target: sequence similarity to proteins we prefer not to hit, such as human proteins or beneficial gut microbiome proteins.
DEG: Database of Essential Genes. A match suggests the protein resembles genes known to be essential in other organisms.
Roary / CoreCruncher: pan-genome tools used to decide whether a gene is core across analyzed strains or accessory/strain-specific.
EC / GO: functional annotations: EC describes enzyme reactions; GO describes biological process, molecular function, or cellular component.
KEGG pathway: a curated metabolic route label used here to group reactions imported from the metabolic model.
Chokepoint: a metabolic reaction that is the only producer or consumer of a metabolite in the imported model.
Prioritization evidence
Selectivity, essentiality, structural confidence, conservation, and predicted binding-site evidence.
Off-target risk
- Human off-target
- Hit
- Human identity (%)
- 29.412 Lower values reduce human off-target concern.
- Human E-value
- 1.16e-13
- Gut microbiome similarity
- 1.9% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.
Essentiality
- Essential (DEG)
- N
- DEG identity (%)
- 26.423 Higher values support similarity to known essential genes.
Structure confidence
- ColabFold pLDDT
- 97.35 0-100 confidence; >70 supports local structural interpretation.
Binding-site evidence
AlphaFold DB / UniProt modelP2Rank's binding-site probability is the primary druggability signal shown across the app; FPocket's druggability score is shown alongside it for comparison. Both estimate small-molecule pocket quality after applying the curated structure priority — neither is experimental binding evidence. The 3D viewer may show a different loaded structure, so visible pockets can differ.
Sequence
Primary amino-acid sequence viewer.
MFDFATPIDRHGTWCTQWDYVADRFGAADLLPFTISDMDFATAPCILDAVSQRLAHGVFGYSRWRNEAFLGAIAHWYASRFNSDIDPQSVVYGPSVIYMVAETIRQWSKEGDGVVVHTPAYDAFYNTITANRRRIAPVPLILKDNRWRCDMDRLEAALAEPKNTLLLLCSPHNPTGKVWRREELETMAALCQKHGVRVISDEIHMDMTWGEHRHIPWSEVAQGPWALFTSGSKSFNIPAFTGAYGFIPEENERDSYLQALKGRDGLSSPSVPALVAHIAAYRDGAPWLDALRDYLQANMRYVADTLNNAFPALCWQPPEATYLAWIDLRPLNVDDRALQQALIAEQKVAIMPGYTYGPEGNGFLRLNVGCPREKLERGVEGLIAALRSLS
Functional annotations
Enzyme classification and Gene Ontology terms linked to this protein.
Subcellular localization
- Localization
- Cytoplasmic
Gene Ontology (GO)
3- GO:0009058 A cellular process consisting of the biochemical pathways by which a living organism synthesizes chemical substances. This typically represents the energy-requiring part of metabolism in which simpler substances are transformed into more complex ones.
- GO:0003824 Catalysis of a biochemical reaction at physiological temperatures. In biologically catalyzed reactions, the reactants are known as substrates, and the catalysts are naturally occurring macromolecular substances known as enzymes. Enzymes possess specific binding sites for substrates, and are usually composed wholly or largely of protein, but RNA that has catalytic activity (ribozyme) is often also regarded as enzymatic.
- GO:0030170 Binding to pyridoxal 5' phosphate, 3-hydroxy-5-(hydroxymethyl)-2-methyl4-pyridine carboxaldehyde 5' phosphate, the biologically active form of vitamin B6.
Sequence domains and features
Domain and signature matches imported from InterPro and related databases.
Show feature table
| Start | End | DB | Term | Name |
|---|---|---|---|---|
| 4 | 386 | NCBIfam | TIGR04350 | PatB family C-S lyase |
| 4 | 386 | InterPro | IPR027619 | C-S lyase, PatB-like |
| 31 | 382 | CDD | cd00609 | AAT_like |
| 2 | 388 | PANTHER | PTHR43525 | PROTEIN MALY |
| 68 | 290 | Gene3D | G3DSA:3.40.640.10 | - |
| 68 | 290 | InterPro | IPR015421 | Pyridoxal phosphate-dependent transferase, major domain |
| 30 | 381 | Pfam | PF00155 | Aminotransferase class I and II |
| 30 | 381 | InterPro | IPR004839 | Aminotransferase, class I/classII |
| 1 | 388 | SUPERFAMILY | SSF53383 | PLP-dependent transferases |
| 1 | 388 | InterPro | IPR015424 | Pyridoxal phosphate-dependent transferase |
| 12 | 380 | Gene3D | G3DSA:3.90.1150.10 | Aspartate Aminotransferase, domain 1 |
| 12 | 380 | InterPro | IPR015422 | Pyridoxal phosphate-dependent transferase, small domain |
3D structure
Selected loaded structure. Experimental PDB entries may cover only a portion of the sequence; AlphaFold DB and ColabFold models typically cover the full protein but remain computational predictions.
How colors and pocket overlays are used
Pocket details Inspect a specific pocket, or open the full viewer
- Method
- -
- Score
- -
- Visible layer
- -
- Residues
- -
- Pocket properties
- -
Selecting a pocket opens its details and centers the viewer without clearing other active layers. Use Focus this pocket when you want to hide the rest; use Surface for the wider residue environment.
Binding pockets · P2Rank
Druggability (P2Rank): high ≥ 0.5 · medium 0.2–0.49 · low < 0.2
Binding pockets · P2Rank
Druggability (P2Rank): high ≥ 0.5 · medium 0.2–0.49 · low < 0.2
Binding pockets · FPocket
Druggability (FPocket): high ≥ 0.7 · medium 0.4–0.69 · low < 0.4
All structural evidence
Structural evidence
0 + 2Experimental PDB entries plus predicted AlphaFold DB or ColabFold models. Click Switch to display a different loaded structure in the viewer.
| Entry | Method | Resolution | Chain | Coverage | Links | Status |
|---|---|---|---|---|---|---|
|
AlphaFold DB
AF_A0A0H3GP61
|
AlphaFold DB | — | — | full sequence | — | Viewing |
|
ColabFold
VK055_0996
|
ColabFold | — | — | full sequence | — | Loaded |
Ligand evidence
Ligands grouped by evidence source. PDB ligands keep the source crystal visible, and loaded crystals can be opened directly in the structure viewer.
Structural ligand evidence is available for this target.
Highest-confidence structural evidence: ligands co-crystallized with this exact protein. If the source PDB is loaded in Target, use Open crystal to inspect it in the structure viewer.
No PDB structure with a co-crystallized ligand found for this exact protein.
Structural evidence inferred from similar proteins. The source crystal indicates where the ligand was observed; the UniProt column identifies the homologous protein carrying that ligand.
| Ligand | Source crystal | UniProt (homolog) | MW · LogP · TPSA | Lipinski | PAINS | SMILES |
|---|---|---|---|---|---|---|
| C6P RCSB PDB | Q17CS8 | 352.3 Da LogP 0.18 TPSA 149.2 | 1 viol. | ✓ Clean |
Cc1c(c(c(cn1)COP(=O)(O)O)CN[C@@H](CS)C(=O)O)O
|
|
| HCI RCSB PDB | Q75WK2 | 150.2 Da LogP 1.70 TPSA 37.3 | ✓ Ro5 | ✓ Clean |
c1ccc(cc1)CCC(=O)O
|
|
| KMT RCSB PDB | Q75WK2 | 148.2 Da LogP 0.39 TPSA 54.4 | ✓ Ro5 | ✓ Clean |
CSCCC(=O)C(=O)O
|
|
| PLS RCSB PDB | A6BMJ3 | 336.2 Da LogP -0.76 TPSA 169.4 | 1 viol. | ✓ Clean |
Cc1c(c(c(cn1)COP(=O)(O)O)CN[C@@H](CO)C(=O)O)O
|
|
| PMP RCSB PDB | P39643 | 248.2 Da LogP 0.16 TPSA 125.9 | ✓ Ro5 | ✓ Clean |
Cc1c(c(c(cn1)COP(=O)(O)O)CN)O
|
|
| PPG RCSB PDB | Q56257 | 389.3 Da LogP 0.22 TPSA 184.8 | ✓ Ro5 | ✓ Clean |
Cc1c(c(c(cn1)COP(=O)(O)O)C/N=C(\C=C\OCCN)/C(=O)…
|
|
| QLP RCSB PDB | Q17CS8 | 377.3 Da LogP -0.49 TPSA 192.3 | 1 viol. | ✓ Clean |
Cc1c(c(c(cn1)COP(=O)(O)O)CN[C@@H](CCC(=O)N)C(=O…
|
Experimental bioactivity from ChEMBL measured directly on this protein. Score = pchembl (−log Ki/IC₅₀; higher = more potent).
No ChEMBL bioactivity data found for this exact protein.
Bioactivity inferred from similar proteins in ChEMBL. Score = pchembl (−log Ki/IC₅₀; higher = more potent).
No ChEMBL hits found through similar proteins.
Proposed virtual-screening candidates from ZINC. Score = Tanimoto similarity to a known binder (0–1; higher = more similar).
| Ligand | Tanimoto | MW · LogP · TPSA | Lipinski | PAINS | SMILES |
|---|---|---|---|---|---|
| ZINC403598 ZINC | 0.800 | 273.3 Da LogP 2.14 TPSA 92.8 | ✓ Ro5 | ✓ Clean |
N[C@@H](Cc1ccc(Oc2ccc(O)cc2)cc1)C(=O)O
|
| ZINC403599 ZINC | 0.800 | 273.3 Da LogP 2.14 TPSA 92.8 | ✓ Ro5 | ✓ Clean |
N[C@H](Cc1ccc(Oc2ccc(O)cc2)cc1)C(=O)O
|
| ZINC406914 ZINC | 0.800 | 222.2 Da LogP 1.72 TPSA 74.6 | ✓ Ro5 | ✓ Clean |
O=C(O)CCc1ccc(CCC(=O)O)cc1
|
| ZINC9998612 ZINC | 0.750 | 226.3 Da LogP 3.37 TPSA 37.3 | ✓ Ro5 | ✓ Clean |
O=C(O)CCc1ccc(-c2ccccc2)cc1
|
| ZINC39351856 ZINC | 0.741 | 328.4 Da LogP 1.26 TPSA 126.6 | ✓ Ro5 | ✓ Clean |
N[C@@H](Cc1ccc(-c2ccc(C[C@H](N)C(=O)O)cc2)cc1)C…
|
| ZINC2163727 ZINC | 0.739 | 222.2 Da LogP 1.72 TPSA 74.6 | ✓ Ro5 | ✓ Clean |
O=C(O)CCc1cccc(CCC(=O)O)c1
|
| ZINC1673354 ZINC | 0.727 | 238.3 Da LogP 3.82 TPSA 17.1 | ✓ Ro5 | ✓ Clean |
O=C(CCc1ccccc1)CCc1ccccc1
|
| ZINC1693912 ZINC | 0.727 | 266.3 Da LogP 3.39 TPSA 34.1 | ✓ Ro5 | Alert |
O=C(CCc1ccccc1)C(=O)CCc1ccccc1
|
| ZINC247409588 ZINC | 0.692 | 220.3 Da LogP 2.44 TPSA 54.4 | ✓ Ro5 | ✓ Clean |
O=C(O)CCCC(=O)CCc1ccccc1
|
| ZINC32333 ZINC | 0.690 | 244.1 Da LogP 1.40 TPSA 63.3 | ✓ Ro5 | ✓ Clean |
N[C@@H](Cc1ccc(Br)cc1)C(=O)O
|
| ZINC32334 ZINC | 0.690 | 244.1 Da LogP 1.40 TPSA 63.3 | ✓ Ro5 | ✓ Clean |
N[C@H](Cc1ccc(Br)cc1)C(=O)O
|
| ZINC3679925 ZINC | 0.690 | 291.1 Da LogP 1.25 TPSA 63.3 | ✓ Ro5 | ✓ Clean |
N[C@H](Cc1ccc(I)cc1)C(=O)O
|
| ZINC391104 ZINC | 0.690 | 291.1 Da LogP 1.25 TPSA 63.3 | ✓ Ro5 | ✓ Clean |
N[C@@H](Cc1ccc(I)cc1)C(=O)O
|
| ZINC4202286 ZINC | 0.690 | 209.2 Da LogP 0.34 TPSA 100.6 | ✓ Ro5 | ✓ Clean |
N[C@@H](Cc1ccc(C(=O)O)cc1)C(=O)O
|
| ZINC4202287 ZINC | 0.690 | 209.2 Da LogP 0.34 TPSA 100.6 | ✓ Ro5 | ✓ Clean |
N[C@H](Cc1ccc(C(=O)O)cc1)C(=O)O
|
| ZINC6092920 ZINC | 0.690 | 223.2 Da LogP 0.27 TPSA 100.6 | ✓ Ro5 | ✓ Clean |
N[C@@H](Cc1ccc(CC(=O)O)cc1)C(=O)O
|
| ZINC6506146 ZINC | 0.690 | 223.2 Da LogP 0.27 TPSA 100.6 | ✓ Ro5 | ✓ Clean |
N[C@H](Cc1ccc(CC(=O)O)cc1)C(=O)O
|
| ZINC34319489 ZINC | 0.688 | 231.3 Da LogP 1.50 TPSA 83.5 | ✓ Ro5 | ✓ Clean |
N[C@@H](Cc1ccc2cc(O)ccc2c1)C(=O)O
|
| ZINC34319490 ZINC | 0.688 | 231.3 Da LogP 1.50 TPSA 83.5 | ✓ Ro5 | ✓ Clean |
N[C@H](Cc1ccc2cc(O)ccc2c1)C(=O)O
|
| ZINC1558609 ZINC | 0.680 | 248.4 Da LogP 4.43 TPSA 37.3 | ✓ Ro5 | ✓ Clean |
O=C(O)CCCCCCCCCc1ccccc1
|
| ZINC2510086 ZINC | 0.680 | 262.4 Da LogP 4.82 TPSA 37.3 | ✓ Ro5 | ✓ Clean |
O=C(O)CCCCCCCCCCc1ccccc1
|
| ZINC2575483 ZINC | 0.680 | 206.3 Da LogP 3.26 TPSA 37.3 | ✓ Ro5 | ✓ Clean |
O=C(O)CCCCCCc1ccccc1
|
| ZINC2575484 ZINC | 0.680 | 220.3 Da LogP 3.65 TPSA 37.3 | ✓ Ro5 | ✓ Clean |
O=C(O)CCCCCCCc1ccccc1
|
| ZINC2575485 ZINC | 0.680 | 234.3 Da LogP 4.04 TPSA 37.3 | ✓ Ro5 | ✓ Clean |
O=C(O)CCCCCCCCc1ccccc1
|
| ZINC2512061 ZINC | 0.677 | 360.4 Da LogP 0.67 TPSA 167.1 | 1 viol. | ✓ Clean |
N[C@@H](Cc1ccc(O)c(-c2cc(C[C@H](N)C(=O)O)ccc2O)…
|
| ZINC6091882 ZINC | 0.677 | 360.4 Da LogP 0.67 TPSA 167.1 | 1 viol. | ✓ Clean |
N[C@@H](Cc1ccc(O)c(-c2cc(C[C@@H](N)C(=O)O)ccc2O…
|
| ZINC6091894 ZINC | 0.677 | 360.4 Da LogP 0.67 TPSA 167.1 | 1 viol. | ✓ Clean |
N[C@H](Cc1ccc(O)c(-c2cc(C[C@@H](N)C(=O)O)ccc2O)…
|
| ZINC11962728 ZINC | 0.667 | 242.3 Da LogP 3.50 TPSA 46.5 | ✓ Ro5 | ✓ Clean |
O=C(O)CCc1ccc(Oc2ccccc2)cc1
|
| ZINC14982778 ZINC | 0.667 | 207.2 Da LogP 0.84 TPSA 80.4 | ✓ Ro5 | ✓ Clean |
CC(=O)c1ccc(C[C@@H](N)C(=O)O)cc1
|
| ZINC14982780 ZINC | 0.667 | 207.2 Da LogP 0.84 TPSA 80.4 | ✓ Ro5 | ✓ Clean |
CC(=O)c1ccc(C[C@H](N)C(=O)O)cc1
|
| ZINC1569734 ZINC | 0.667 | 238.2 Da LogP -0.54 TPSA 112.6 | ✓ Ro5 | ✓ Clean |
N[C@H](Cc1ccc(O)cc1)C(=O)NCC(=O)O
|
| ZINC2244337 ZINC | 0.667 | 241.3 Da LogP 2.31 TPSA 63.3 | ✓ Ro5 | ✓ Clean |
N[C@@H](Cc1ccc(-c2ccccc2)cc1)C(=O)O
|
| ZINC2244338 ZINC | 0.667 | 241.3 Da LogP 2.31 TPSA 63.3 | ✓ Ro5 | ✓ Clean |
N[C@H](Cc1ccc(-c2ccccc2)cc1)C(=O)O
|
| ZINC2505456 ZINC | 0.667 | 210.2 Da LogP 0.72 TPSA 94.8 | ✓ Ro5 | ✓ Clean |
O=C(O)C(Cc1ccc(O)cc1)C(=O)O
|
| ZINC2575475 ZINC | 0.667 | 238.2 Da LogP -0.54 TPSA 112.6 | ✓ Ro5 | ✓ Clean |
N[C@@H](Cc1ccc(O)cc1)C(=O)NCC(=O)O
|
| ZINC2575618 ZINC | 0.667 | 208.2 Da LogP -0.26 TPSA 106.4 | ✓ Ro5 | ✓ Clean |
NC(=O)c1ccc(C[C@H](N)C(=O)O)cc1
|
| ZINC4241956 ZINC | 0.667 | 208.2 Da LogP -0.26 TPSA 106.4 | ✓ Ro5 | ✓ Clean |
NC(=O)c1ccc(C[C@@H](N)C(=O)O)cc1
|
| ZINC49820418 ZINC | 0.667 | 226.3 Da LogP 3.37 TPSA 37.3 | ✓ Ro5 | ✓ Clean |
O=C(O)CCc1cccc(-c2ccccc2)c1
|
| ZINC163985 ZINC | 0.655 | 256.3 Da LogP 3.28 TPSA 46.5 | ✓ Ro5 | ✓ Clean |
O=C(O)CCc1ccc(OCc2ccccc2)cc1
|
| ZINC2004481 ZINC | 0.647 | 344.4 Da LogP 0.78 TPSA 132.9 | ✓ Ro5 | ✓ Clean |
N[C@@H](Cc1ccc(O)cc1)C(=O)N[C@@H](Cc1ccc(O)cc1)…
|
| ZINC1532705 ZINC | 0.646 | 249.2 Da LogP 0.20 TPSA 120.1 | ✓ Ro5 | ✓ Clean |
Cc1ncc(COP(=O)(O)O)c(CO)c1O
|
| ZINC116924508 ZINC | 0.645 | 215.2 Da LogP 1.58 TPSA 63.3 | ✓ Ro5 | ✓ Clean |
N[C@@H](Cc1ccc(C(F)F)cc1)C(=O)O
|
| ZINC116924543 ZINC | 0.645 | 215.2 Da LogP 1.58 TPSA 63.3 | ✓ Ro5 | ✓ Clean |
N[C@H](Cc1ccc(C(F)F)cc1)C(=O)O
|
| ZINC2385595 ZINC | 0.645 | 207.3 Da LogP 1.76 TPSA 63.3 | ✓ Ro5 | ✓ Clean |
CC(C)c1ccc(C[C@H](N)C(=O)O)cc1
|
| ZINC2392305 ZINC | 0.645 | 221.3 Da LogP 1.94 TPSA 63.3 | ✓ Ro5 | ✓ Clean |
CC(C)(C)c1ccc(C[C@H](N)C(=O)O)cc1
|
| ZINC2392306 ZINC | 0.645 | 221.3 Da LogP 1.94 TPSA 63.3 | ✓ Ro5 | ✓ Clean |
CC(C)(C)c1ccc(C[C@@H](N)C(=O)O)cc1
|
| ZINC44283754 ZINC | 0.645 | 207.3 Da LogP 1.59 TPSA 63.3 | ✓ Ro5 | ✓ Clean |
CCCc1ccc(C[C@H](N)C(=O)O)cc1
|
| ZINC44283756 ZINC | 0.645 | 207.3 Da LogP 1.59 TPSA 63.3 | ✓ Ro5 | ✓ Clean |
CCCc1ccc(C[C@@H](N)C(=O)O)cc1
|
| ZINC44284738 ZINC | 0.645 | 255.3 Da LogP 2.62 TPSA 63.3 | ✓ Ro5 | ✓ Clean |
Cc1ccc(-c2ccc(C[C@H](N)C(=O)O)cc2)cc1
|
| ZINC44284740 ZINC | 0.645 | 255.3 Da LogP 2.62 TPSA 63.3 | ✓ Ro5 | ✓ Clean |
Cc1ccc(-c2ccc(C[C@@H](N)C(=O)O)cc2)cc1
|
PDB and ChEMBL records on this protein are shown in full. ChEMBL records from similar proteins are capped at the top 100 per protein (by pchembl) and ZINC at the top 50 (Tanimoto ≥ 0.5). ADME columns are descriptor-based screening flags, not experimental toxicity results.
Cross-references
External database identifiers for this protein, its structures, ligands, and metabolic reactions.