Overview
Basic information about this protein and its source genome.
- Accession
- PA1061
- Gene
- PA1061 cds1
- Status
- annotated
- Amino acids
- 365
- Structure source
- AlphaFold
Target profile
Computed evidence for target prioritization.
- Human off-target
- hit
- Human identity (%)
- 25.575
- Human E-value
- 3.15e-19
- Gut microbiome off-target
- hit
- Essential (DEG)
- N
- Localization
- Cytoplasmic
Selected Druggability evidence
Selected Druggability is the FPocket score chosen for ranking using the curated structure priority. The 3D viewer may show a different loaded structure, so its visible pockets can differ.
Sequence
Primary amino-acid sequence viewer.
Functional Annotations
Enzyme classification and Gene Ontology terms linked to this protein.
Enzyme Commission (EC)
1Gene Ontology (GO)
6- GO:0005737 The contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
- GO:0004124 Catalysis of the reaction: O3-acetyl-L-serine + hydrogen sulfide = L-cysteine + acetate.
- GO:0016829 Catalysis of the cleavage of C-C, C-O, C-N and other bonds by other means than by hydrolysis or oxidation, or conversely adding a group to a double bond. They differ from other enzymes in that two substrates are involved in one reaction direction, but only one in the other direction. When acting on the single substrate, a molecule is eliminated and this generates either a new double bond or a new ring.
- GO:0030170 Binding to pyridoxal 5' phosphate, 3-hydroxy-5-(hydroxymethyl)-2-methyl4-pyridine carboxaldehyde 5' phosphate, the biologically active form of vitamin B6.
- GO:0019344 The chemical reactions and pathways resulting in the formation of L-cysteine, 2-amino-3-mercaptopropanoic acid.
- GO:0019450 OBSOLETE. The chemical reactions and pathways resulting in the breakdown of L-cysteine into other compounds, including pyruvate.
Sequence Features
Domain/signature hits from InterPro and related databases.
Show feature table
| Start | End | DB | Term | Name |
|---|---|---|---|---|
| 26 | 317 | Pfam | PF00291 | Pyridoxal-phosphate dependent enzyme |
| 26 | 317 | InterPro | IPR001926 | Tryptophan synthase beta chain-like, PALP domain |
| 24 | 337 | SUPERFAMILY | SSF53686 | Tryptophan synthase beta subunit-like PLP-dependent enzymes |
| 24 | 337 | InterPro | IPR036052 | Tryptophan synthase beta chain-like, PALP domain superfamily |
| 5 | 351 | Hamap | MF_00868 | L-cysteine desulfhydrase Cds1 [cds1]. |
| 5 | 351 | InterPro | IPR047586 | L-cysteine desulfhydrase Cds1 |
| 24 | 333 | PANTHER | PTHR10314 | CYSTATHIONINE BETA-SYNTHASE |
| 52 | 158 | FunFam | G3DSA:3.40.50.1100:FF:000015 | Cysteine synthase B |
| 52 | 158 | Gene3D | G3DSA:3.40.50.1100 | - |
| 52 | 158 | InterPro | IPR036052 | Tryptophan synthase beta chain-like, PALP domain superfamily |
| 26 | 323 | Gene3D | G3DSA:3.40.50.1100 | - |
| 26 | 323 | InterPro | IPR036052 | Tryptophan synthase beta chain-like, PALP domain superfamily |
3D Structure
Selected loaded structure. Experimental PDB entries may cover only a portion of the sequence; predicted models typically cover the full protein.
Loading 3D structure...
Structural evidence
0 + 1Experimental PDB entries and predicted models. Click Switch to display a different structure in the viewer.
| Entry | Method | Resolution | Chain | Coverage | Links | Status |
|---|---|---|---|---|---|---|
|
AlphaFold
PA1061
|
AlphaFold | — | — | full sequence | — | Viewing |
Pocket details FPocket · P2Rank — toggle visibility and zoom from here, or open full viewer
Pockets (FPOCKET)
Showing top-ranked FPocket candidates by druggability. Druggability is color-coded: high (0.7 or higher), medium (0.4 to 0.69), low (below 0.4).
| FPOCKET | Sticks | Spheres | Surfaces | Druggability | Labels | Zoom | Positions |
|---|---|---|---|---|---|---|---|
| 6 | 0.263 |
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.
Highest-confidence structural evidence: ligands co-crystallized with this exact protein. If the source PDB is loaded in TPW, 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 |
|---|---|---|---|---|---|---|
| FLC | A6QDA0 | 189.1 Da LogP -5.25 TPSA 140.6 | ✓ Ro5 | ✓ Clean |
C(C(=O)[O-])C(CC(=O)[O-])(C(=O)[O-])O
|
|
| MLI | A0A0H3G350 | 102.0 Da LogP -3.12 TPSA 80.3 | ✓ Ro5 | ✓ Clean |
C(C(=O)[O-])C(=O)[O-]
|
|
| P1T | A0A125YSJ9 | 318.2 Da LogP 0.39 TPSA 149.2 | ✓ Ro5 | ✓ Clean |
Cc1c(c(c(cn1)COP(=O)(O)O)CNC(=C)C(=O)O)O
|
|
| PE4 | P35520 | 354.4 Da LogP 0.11 TPSA 84.8 | ✓ Ro5 | ✓ Clean |
CCOCCOCCOCCOCCOCCOCCOCCO
|
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).
| Ligand | UniProt (homolog) | pchembl | MW · LogP · TPSA | Lipinski | PAINS | SMILES |
|---|---|---|---|---|---|---|
| AOA | P35520 | 6.00 | 91.1 Da LogP -1.04 TPSA 72.5 | ✓ Ro5 | ✓ Clean |
C(C(=O)O)ON
|
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 |
|---|---|---|---|---|---|
| ZINC5650743 | 1.000 | 222.3 Da LogP 0.07 TPSA 57.2 | ✓ Ro5 | ✓ Clean |
CCOCCOCCOCCOCCO
|
| ZINC6403917 | 1.000 | 354.4 Da LogP 0.11 TPSA 84.8 | ✓ Ro5 | ✓ Clean |
CCOCCOCCOCCOCCOCCOCCOCCO
|
| ZINC1532902 | 0.700 | 206.2 Da LogP -0.86 TPSA 132.1 | ✓ Ro5 | ✓ Clean |
O=C(O)CC[C@@](O)(CC(=O)O)C(=O)O
|
| ZINC2018106 | 0.700 | 206.2 Da LogP -0.86 TPSA 132.1 | ✓ Ro5 | ✓ Clean |
O=C(O)CC[C@](O)(CC(=O)O)C(=O)O
|
| ZINC12501520 | 0.688 | 458.5 Da LogP -0.88 TPSA 123.5 | 1 viol. | ✓ Clean |
OCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO
|
| ZINC3874716 | 0.688 | 414.5 Da LogP -0.90 TPSA 114.3 | ✓ Ro5 | ✓ Clean |
OCCOCCOCCOCCOCCOCCOCCOCCOCCO
|
| ZINC4283769 | 0.688 | 238.3 Da LogP -0.96 TPSA 77.4 | ✓ Ro5 | ✓ Clean |
OCCOCCOCCOCCOCCO
|
| ZINC4521548 | 0.688 | 282.3 Da LogP -0.95 TPSA 86.6 | ✓ Ro5 | ✓ Clean |
OCCOCCOCCOCCOCCOCCO
|
| ZINC5178829 | 0.688 | 326.4 Da LogP -0.93 TPSA 95.8 | ✓ Ro5 | ✓ Clean |
OCCOCCOCCOCCOCCOCCOCCO
|
| ZINC5178830 | 0.688 | 370.4 Da LogP -0.91 TPSA 105.1 | ✓ Ro5 | ✓ Clean |
OCCOCCOCCOCCOCCOCCOCCOCCO
|
| ZINC5859031 | 0.688 | 294.4 Da LogP 1.13 TPSA 55.4 | ✓ Ro5 | ✓ Clean |
CCOCCOCCOCCOCCOCCOCC
|
| ZINC1532708 | 0.660 | 248.2 Da LogP 0.16 TPSA 125.9 | ✓ Ro5 | ✓ Clean |
Cc1ncc(COP(=O)(O)O)c(CN)c1O
|
| ZINC3593496 | 0.652 | 206.2 Da LogP -1.16 TPSA 121.1 | ✓ Ro5 | ✓ Clean |
COC(=O)C[C@@](O)(CC(=O)O)C(=O)O
|
| ZINC3593497 | 0.652 | 206.2 Da LogP -1.16 TPSA 121.1 | ✓ Ro5 | ✓ Clean |
COC(=O)C[C@](O)(CC(=O)O)C(=O)O
|
| ZINC1532705 | 0.638 | 249.2 Da LogP 0.20 TPSA 120.1 | ✓ Ro5 | ✓ Clean |
Cc1ncc(COP(=O)(O)O)c(CO)c1O
|
| ZINC14686440 | 0.625 | 436.4 Da LogP -2.64 TPSA 247.9 | 1 viol. | ✓ Clean |
O=C(O)C[C@](O)(CC(=O)NCCCCNC(=O)C[C@@](O)(CC(=O…
|
| ZINC14686442 | 0.625 | 436.4 Da LogP -2.64 TPSA 247.9 | 1 viol. | ✓ Clean |
O=C(O)C[C@@](O)(CC(=O)NCCCCNC(=O)C[C@](O)(CC(=O…
|
| ZINC14686444 | 0.625 | 436.4 Da LogP -2.64 TPSA 247.9 | 1 viol. | ✓ Clean |
O=C(O)C[C@@](O)(CC(=O)NCCCCNC(=O)C[C@@](O)(CC(=…
|
| ZINC1644613 | 0.619 | 206.3 Da LogP 0.83 TPSA 47.9 | ✓ Ro5 | ✓ Clean |
CCCCOCCOCCOCCO
|
| ZINC1580161 | 0.600 | 208.3 Da LogP -0.33 TPSA 57.2 | ✓ Ro5 | ✓ Clean |
COCCOCCOCCOCCO
|
| ZINC16052118 | 0.600 | 340.4 Da LogP -0.28 TPSA 84.8 | ✓ Ro5 | ✓ Clean |
COCCOCCOCCOCCOCCOCCOCCO
|
| ZINC16052257 | 0.600 | 384.5 Da LogP -0.26 TPSA 94.1 | ✓ Ro5 | ✓ Clean |
COCCOCCOCCOCCOCCOCCOCCOCCO
|
| ZINC34317654 | 0.600 | 472.6 Da LogP -0.23 TPSA 112.5 | 1 viol. | ✓ Clean |
COCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO
|
| ZINC44076059 | 0.600 | 428.5 Da LogP -0.24 TPSA 103.3 | ✓ Ro5 | ✓ Clean |
COCCOCCOCCOCCOCCOCCOCCOCCOCCO
|
| ZINC5210101 | 0.600 | 252.3 Da LogP -0.31 TPSA 66.4 | ✓ Ro5 | ✓ Clean |
COCCOCCOCCOCCOCCO
|
| ZINC5997860 | 0.600 | 296.4 Da LogP -0.29 TPSA 75.6 | ✓ Ro5 | ✓ Clean |
COCCOCCOCCOCCOCCOCCO
|
| ZINC2555269 | 0.591 | 220.3 Da LogP 1.22 TPSA 47.9 | ✓ Ro5 | ✓ Clean |
CCCCCOCCOCCOCCO
|
| ZINC4974293 | 0.579 | 280.4 Da LogP 1.08 TPSA 55.4 | ✓ Ro5 | ✓ Clean |
CCOCCOCCOCOCCOCCOCC
|
| ZINC13398039 | 0.577 | 234.2 Da LogP -0.38 TPSA 121.1 | ✓ Ro5 | ✓ Clean |
CC(C)OC(=O)C[C@](O)(CC(=O)O)C(=O)O
|
| ZINC2528012 | 0.577 | 234.2 Da LogP -0.38 TPSA 121.1 | ✓ Ro5 | ✓ Clean |
CC(C)OC(=O)C[C@@](O)(CC(=O)O)C(=O)O
|
| ZINC1656021 | 0.574 | 233.2 Da LogP 1.01 TPSA 99.9 | ✓ Ro5 | ✓ Clean |
Cc1ncc(COP(=O)(O)O)c(C)c1O
|
| ZINC100014200 | 0.565 | 494.7 Da LogP 4.02 TPSA 84.8 | ✓ Ro5 | ✓ Clean |
CCCCCCCCCCCCOCCOCCOCCOCCOCCOCCOCCO
|
| ZINC100070166 | 0.565 | 290.4 Da LogP 3.17 TPSA 47.9 | ✓ Ro5 | ✓ Clean |
CCCCCCCCCCOCCOCCOCCO
|
| ZINC100310628 | 0.565 | 478.7 Da LogP 4.78 TPSA 75.6 | ✓ Ro5 | ✓ Clean |
CCCCCCCCCCCCCCOCCOCCOCCOCCOCCOCCO
|
| ZINC101772322 | 0.565 | 434.7 Da LogP 4.76 TPSA 66.4 | ✓ Ro5 | ✓ Clean |
CCCCCCCCCCCCCCOCCOCCOCCOCCOCCO
|
| ZINC103600921 | 0.565 | 466.7 Da LogP 3.24 TPSA 84.8 | ✓ Ro5 | ✓ Clean |
CCCCCCCCCCOCCOCCOCCOCCOCCOCCOCCO
|
| ZINC14880431 | 0.565 | 378.6 Da LogP 3.20 TPSA 66.4 | ✓ Ro5 | ✓ Clean |
CCCCCCCCCCOCCOCCOCCOCCOCCO
|
| ZINC14881140 | 0.565 | 306.4 Da LogP 2.41 TPSA 57.2 | ✓ Ro5 | ✓ Clean |
CCCCCCCCOCCOCCOCCOCCO
|
| ZINC16051619 | 0.565 | 350.5 Da LogP 2.42 TPSA 66.4 | ✓ Ro5 | ✓ Clean |
CCCCCCCCOCCOCCOCCOCCOCCO
|
| ZINC2584424 | 0.565 | 218.3 Da LogP 2.37 TPSA 38.7 | ✓ Ro5 | ✓ Clean |
CCCCCCCCOCCOCCO
|
| ZINC5273610 | 0.565 | 322.4 Da LogP 1.64 TPSA 66.4 | ✓ Ro5 | ✓ Clean |
CCCCCCOCCOCCOCCOCCOCCO
|
| ZINC58538366 | 0.565 | 392.6 Da LogP 3.59 TPSA 66.4 | ✓ Ro5 | ✓ Clean |
CCCCCCCCCCCOCCOCCOCCOCCOCCO
|
| ZINC58631420 | 0.565 | 422.6 Da LogP 3.22 TPSA 75.6 | ✓ Ro5 | ✓ Clean |
CCCCCCCCCCOCCOCCOCCOCCOCCOCCO
|
| ZINC59622400 | 0.565 | 274.4 Da LogP 3.93 TPSA 38.7 | ✓ Ro5 | ✓ Clean |
CCCCCCCCCCCCOCCOCCO
|
| ZINC71788551 | 0.565 | 334.5 Da LogP 3.19 TPSA 57.2 | ✓ Ro5 | ✓ Clean |
CCCCCCCCCCOCCOCCOCCOCCO
|
| ZINC71788564 | 0.565 | 262.4 Da LogP 2.39 TPSA 47.9 | ✓ Ro5 | ✓ Clean |
CCCCCCCCOCCOCCOCCO
|
| ZINC71788567 | 0.565 | 406.6 Da LogP 3.98 TPSA 66.4 | ✓ Ro5 | ✓ Clean |
CCCCCCCCCCCCOCCOCCOCCOCCOCCO
|
| ZINC88260008 | 0.565 | 390.6 Da LogP 4.75 TPSA 57.2 | ✓ Ro5 | ✓ Clean |
CCCCCCCCCCCCCCOCCOCCOCCOCCO
|
| ZINC95784968 | 0.565 | 450.7 Da LogP 4.00 TPSA 75.6 | ✓ Ro5 | ✓ Clean |
CCCCCCCCCCCCOCCOCCOCCOCCOCCOCCO
|
| ZINC95863931 | 0.565 | 464.7 Da LogP 4.39 TPSA 75.6 | ✓ Ro5 | ✓ Clean |
CCCCCCCCCCCCCOCCOCCOCCOCCOCCOCCO
|
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.