Protein profile

PA3816

O-acetylserine synthase

Genome: NC_002516.2

Gene: PA3816 cysE Structure source: AlphaFold UniProt Q9HXI6

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Amino acids 258

Annotations 5

Features 14

PDB binders 1

Druggability 0.784

Overview

Basic information about this protein and its source genome.

Accession: PA3816
Assembly: Pseudomonas aeruginosa PAO1, complete genome
Gene: PA3816 cysE
Status: annotated
Amino acids: 258
Structure source: AlphaFold

2.3.1.30

GO:0005829 The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes. GO:0009001 Catalysis of the reaction: L-serine + acetyl-CoA = O-acetyl-L-serine + CoA. GO:0006535 OBSOLETE. The chemical reactions and pathways resulting in the formation of cysteine from L- serine. GO:0005737 The contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.

Target profile

Computed evidence for target prioritization.

Human off-target: No hit
Gut microbiome off-target: hit
Essential (DEG): Y
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.

FPocket 0.784

Structure –

Pocket –

Sequence

Primary amino-acid sequence viewer.

Functional Annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 4 GO

Enzyme Commission (EC)

2.3.1.30

Gene Ontology (GO)

GO:0005829 The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
GO:0009001 Catalysis of the reaction: L-serine + acetyl-CoA = O-acetyl-L-serine + CoA.
GO:0006535 OBSOLETE. The chemical reactions and pathways resulting in the formation of cysteine from L- serine.
GO:0005737 The contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.

Sequence Features

Domain/signature hits from InterPro and related databases.

14 records

Show feature table

Start	End	DB	Term	Name
117	152	Pfam	PF00132	Bacterial transferase hexapeptide (six repeats)
117	152	InterPro	IPR001451	Hexapeptide repeat
5	166	NCBIfam	TIGR01172	serine O-acetyltransferase
5	166	InterPro	IPR005881	Serine O-acetyltransferase
2	172	SUPERFAMILY	SSF51161	Trimeric LpxA-like enzymes
2	172	InterPro	IPR011004	Trimeric LpxA-like superfamily
1	66	FunFam	G3DSA:1.10.3130.10:FF:000002	Serine acetyltransferase
3	179	PANTHER	PTHR42811	SERINE ACETYLTRANSFERASE
1	66	Gene3D	G3DSA:1.10.3130.10	serine acetyltransferase, domain 1
1	66	InterPro	IPR042122	Serine acetyltransferase, N-terminal domain superfamily
64	164	CDD	cd03354	LbH_SAT
64	164	InterPro	IPR045304	Serine acetyltransferase, LbH domain
67	189	Gene3D	G3DSA:2.160.10.10	Hexapeptide repeat proteins
67	182	FunFam	G3DSA:2.160.10.10:FF:000007	Serine acetyltransferase

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...

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Structural evidence

0 + 1

Experimental PDB entries and predicted models. Click Switch to display a different structure in the viewer.

Entry	Method	Resolution	Chain	Coverage	Links	Status
AlphaFold PA3816	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
1				0.784
8				0.577

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.

51 records

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
15P	4HZD	A0A0F6AR69	1529.8 Da LogP 0.17 TPSA 334.1	2 viol.	✓ Clean	`COCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO…`

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
ZINC1580161	1.000	208.3 Da LogP -0.33 TPSA 57.2	✓ Ro5	✓ Clean	`COCCOCCOCCOCCO`
ZINC16052118	1.000	340.4 Da LogP -0.28 TPSA 84.8	✓ Ro5	✓ Clean	`COCCOCCOCCOCCOCCOCCOCCO`
ZINC16052257	1.000	384.5 Da LogP -0.26 TPSA 94.1	✓ Ro5	✓ Clean	`COCCOCCOCCOCCOCCOCCOCCOCCO`
ZINC34317654	1.000	472.6 Da LogP -0.23 TPSA 112.5	1 viol.	✓ Clean	`COCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO`
ZINC44076059	1.000	428.5 Da LogP -0.24 TPSA 103.3	✓ Ro5	✓ Clean	`COCCOCCOCCOCCOCCOCCOCCOCCOCCO`
ZINC5210101	1.000	252.3 Da LogP -0.31 TPSA 66.4	✓ Ro5	✓ Clean	`COCCOCCOCCOCCOCCO`
ZINC5997860	1.000	296.4 Da LogP -0.29 TPSA 75.6	✓ Ro5	✓ Clean	`COCCOCCOCCOCCOCCOCCO`
ZINC575419714	0.727	312.4 Da LogP 0.42 TPSA 66.4	✓ Ro5	✓ Clean	`COCCOCCOCCSCCOCCOCCO`
ZINC115163232	0.700	222.3 Da LogP 0.07 TPSA 57.2	✓ Ro5	✓ Clean	`COCCOCCOCCOCCCO`
ZINC258837490	0.700	354.4 Da LogP 0.11 TPSA 84.8	✓ Ro5	✓ Clean	`COCCOCCOCCOCCOCCOCCOCCCO`
ZINC12501520	0.688	458.5 Da LogP -0.88 TPSA 123.5	1 viol.	✓ Clean	`OCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO`
ZINC1692489	0.688	222.3 Da LogP 0.33 TPSA 46.2	✓ Ro5	✓ Clean	`COCCOCCOCCOCCOC`
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`
ZINC4530388	0.688	266.3 Da LogP 0.35 TPSA 55.4	✓ Ro5	✓ Clean	`COCCOCCOCCOCCOCCOC`
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`
ZINC5701172	0.688	310.4 Da LogP 0.36 TPSA 64.6	✓ Ro5	✓ Clean	`COCCOCCOCCOCCOCCOCCOC`
ZINC5997861	0.688	398.5 Da LogP 0.40 TPSA 83.1	✓ Ro5	✓ Clean	`COCCOCCOCCOCCOCCOCCOCCOCCOC`
ZINC575432150	0.667	344.4 Da LogP -0.89 TPSA 100.5	✓ Ro5	✓ Clean	`COCCOCCOCCS(=O)(=O)CCOCCOCCO`
ZINC1857524240	0.652	207.3 Da LogP -0.75 TPSA 60.0	✓ Ro5	✓ Clean	`COCCNCCOCCOCCO`
ZINC27644247	0.618	230.3 Da LogP 0.09 TPSA 111.2	✓ Ro5	✓ Clean	`CCCCNC(=N)NCCC[C@H](N)C(=O)O`
ZINC5650743	0.600	222.3 Da LogP 0.07 TPSA 57.2	✓ Ro5	✓ Clean	`CCOCCOCCOCCOCCO`
ZINC6403917	0.600	354.4 Da LogP 0.11 TPSA 84.8	✓ Ro5	✓ Clean	`CCOCCOCCOCCOCCOCCOCCOCCO`
ZINC196899382	0.588	228.2 Da LogP -0.14 TPSA 92.4	✓ Ro5	✓ Clean	`N[C@@H](CCCNC(=O)C(F)(F)F)C(=O)O`
ZINC116078641	0.583	222.2 Da LogP -0.80 TPSA 74.2	✓ Ro5	✓ Clean	`COC(=O)COCCOCCOCCO`
ZINC1857790631	0.583	280.3 Da LogP -0.39 TPSA 83.5	✓ Ro5	✓ Clean	`COC(=O)CCOCCOCCOCCOCCO`
ZINC196151418	0.583	266.3 Da LogP -0.78 TPSA 83.5	✓ Ro5	✓ Clean	`COC(=O)COCCOCCOCCOCCO`
ZINC202958272	0.583	236.3 Da LogP -0.41 TPSA 74.2	✓ Ro5	✓ Clean	`COC(=O)CCOCCOCCOCCO`
ZINC34111591	0.583	207.3 Da LogP -1.06 TPSA 62.2	✓ Ro5	✓ Clean	`COCCOCCN(CCO)CCO`
ZINC4155291	0.583	216.2 Da LogP -1.37 TPSA 130.8	✓ Ro5	✓ Clean	`CC(=O)/N=C(\N)NCCC[C@H](N)C(=O)O`
ZINC4155299	0.583	216.2 Da LogP -1.37 TPSA 130.8	✓ Ro5	✓ Clean	`CC(=O)/N=C(\N)NCCC[C@@H](N)C(=O)O`
ZINC642881862	0.583	324.4 Da LogP -0.38 TPSA 92.7	✓ Ro5	✓ Clean	`COC(=O)CCOCCOCCOCCOCCOCCO`
ZINC4543782	0.571	202.3 Da LogP -0.74 TPSA 102.4	✓ Ro5	✓ Clean	`CN(C)C(=N)NCCC[C@@H](N)C(=O)O`
ZINC7997269	0.571	205.3 Da LogP 0.07 TPSA 99.2	✓ Ro5	✓ Clean	`CSC(=N)NCCC[C@@H](N)C(=O)O`
ZINC144076260	0.559	232.2 Da LogP -0.84 TPSA 129.7	✓ Ro5	✓ Clean	`N[C@@H](CCCCNC(=O)CC(=O)O)C(=O)O`
ZINC218922593	0.559	204.2 Da LogP -1.32 TPSA 112.6	✓ Ro5	✓ Clean	`N[C@@H](CCCCNC(=O)CO)C(=O)O`
ZINC2516116	0.559	275.3 Da LogP -1.12 TPSA 155.7	✓ Ro5	✓ Clean	`N[C@@H](CCCCNC(=O)CC[C@H](N)C(=O)O)C(=O)O`
ZINC4545887	0.559	275.3 Da LogP -1.12 TPSA 155.7	✓ Ro5	✓ Clean	`N[C@@H](CCCCNC(=O)CC[C@@H](N)C(=O)O)C(=O)O`
ZINC4545888	0.559	275.3 Da LogP -1.12 TPSA 155.7	✓ Ro5	✓ Clean	`N[C@@H](CCC(=O)NCCCC[C@@H](N)C(=O)O)C(=O)O`
ZINC4545889	0.559	275.3 Da LogP -1.12 TPSA 155.7	✓ Ro5	✓ Clean	`N[C@H](CCCCNC(=O)CC[C@@H](N)C(=O)O)C(=O)O`
ZINC50027904	0.559	261.3 Da LogP -1.51 TPSA 155.7	✓ Ro5	✓ Clean	`N[C@@H](CCCCNC(=O)C[C@H](N)C(=O)O)C(=O)O`
ZINC3055005	0.556	204.2 Da LogP -0.63 TPSA 126.6	✓ Ro5	✓ Clean	`N[C@@H](CCCC[C@H](N)C(=O)O)C(=O)O`
ZINC3055007	0.556	204.2 Da LogP -0.63 TPSA 126.6	✓ Ro5	✓ Clean	`N[C@@H](CCCC[C@@H](N)C(=O)O)C(=O)O`
ZINC3055010	0.556	204.2 Da LogP -0.63 TPSA 126.6	✓ Ro5	✓ Clean	`N[C@H](CCCC[C@@H](N)C(=O)O)C(=O)O`
ZINC100017163	0.553	213.3 Da LogP 0.71 TPSA 99.2	✓ Ro5	✓ Clean	`C/C=C/CC(=N)NCCC[C@H](N)C(=O)O`
ZINC19796052	0.553	219.2 Da LogP -1.73 TPSA 156.9	✓ Ro5	✓ Clean	`N/C(=N\[N+](=O)[O-])NCCC[C@H](N)C(=O)O`
ZINC21982226	0.553	219.2 Da LogP -1.73 TPSA 156.9	✓ Ro5	✓ Clean	`N/C(=N\[N+](=O)[O-])NCCC[C@@H](N)C(=O)O`
ZINC34764844	0.550	206.3 Da LogP 1.09 TPSA 36.9	✓ Ro5	✓ Clean	`CCCOCCOCCOCCOC`

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.