Protein profile

PA3333

3-oxoacyl-ACP synthase III

Genome: NC_002516.2

Gene: fabH2 Structure source: ColabFold

Export view

Amino acids 330

Annotations 3

Features 14

PDB binders 13

Druggability 0.886

Overview

Basic information about this protein and its source genome.

Accession: PA3333
Assembly: Pseudomonas aeruginosa PAO1, complete genome
Gene: fabH2
Status: annotated
Amino acids: 330
Structure source: ColabFold

GO:0006633 The chemical reactions and pathways resulting in the formation of a fatty acid, any of the aliphatic monocarboxylic acids that can be liberated by hydrolysis from naturally occurring fats and oils. Fatty acids are predominantly straight-chain acids of 4 to 24 carbon atoms, which may be saturated or unsaturated; branched fatty acids and hydroxy fatty acids also occur, and very long chain acids of over 30 carbons are found in waxes. GO:0016746 Catalysis of the transfer of an acyl group from one compound (donor) to another (acceptor). GO:0004315 Catalysis of the reaction: acyl-[acyl-carrier protein] + malonyl-[acyl-carrier protein] = 3-oxoacyl-[acyl-carrier protein] + CO2 + [acyl-carrier protein].

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 0.886

Structure –

Pocket –

Sequence

Primary amino-acid sequence viewer.

Functional Annotations

Enzyme classification and Gene Ontology terms linked to this protein.

3 GO

Gene Ontology (GO)

GO:0006633 The chemical reactions and pathways resulting in the formation of a fatty acid, any of the aliphatic monocarboxylic acids that can be liberated by hydrolysis from naturally occurring fats and oils. Fatty acids are predominantly straight-chain acids of 4 to 24 carbon atoms, which may be saturated or unsaturated; branched fatty acids and hydroxy fatty acids also occur, and very long chain acids of over 30 carbons are found in waxes.
GO:0016746 Catalysis of the transfer of an acyl group from one compound (donor) to another (acceptor).
GO:0004315 Catalysis of the reaction: acyl-[acyl-carrier protein] + malonyl-[acyl-carrier protein] = 3-oxoacyl-[acyl-carrier protein] + CO2 + [acyl-carrier protein].

Sequence Features

Domain/signature hits from InterPro and related databases.

14 records

Show feature table

Start	End	DB	Term	Name
3	322	Hamap	MF_01815	Beta-ketoacyl-[acyl-carrier-protein] synthase III [fabH].
3	322	InterPro	IPR004655	Beta-ketoacyl-[acyl-carrier-protein] synthase III
2	322	PANTHER	PTHR34069	3-OXOACYL-[ACYL-CARRIER-PROTEIN] SYNTHASE 3
8	323	SUPERFAMILY	SSF53901	Thiolase-like
8	323	InterPro	IPR016039	Thiolase-like
5	320	CDD	cd00830	KAS_III
233	322	Pfam	PF08541	3-Oxoacyl-[acyl-carrier-protein (ACP)] synthase III C terminal
233	322	InterPro	IPR013747	Beta-ketoacyl-[acyl-carrier-protein] synthase III, C-terminal
5	322	NCBIfam	TIGR00747	beta-ketoacyl-ACP synthase III
5	322	InterPro	IPR004655	Beta-ketoacyl-[acyl-carrier-protein] synthase III
105	185	Pfam	PF08545	3-Oxoacyl-[acyl-carrier-protein (ACP)] synthase III
105	185	InterPro	IPR013751	Beta-ketoacyl-[acyl-carrier-protein] synthase III, N-terminal
3	329	Gene3D	G3DSA:3.40.47.10	-
3	329	InterPro	IPR016039	Thiolase-like

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...

Legend High Medium Low

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
ColabFold PA3333	ColabFold	—	—	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				0.854

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.

67 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
4LB	4Z8D	P0A6R0	325.8 Da LogP 3.46 TPSA 75.6	✓ Ro5	✓ Clean	`c1ccc(c(c1)COC(=O)NCC2CCC(CC2)C(=O)O)Cl`
4VK	5BNM	P0A6R0	353.4 Da LogP 3.32 TPSA 66.4	✓ Ro5	✓ Clean	`c1ccc(cc1)S(=O)(=O)NCc2ccc(cc2)c3cccc(c3)CO`
4VL	5BNR	P0A6R0	330.4 Da LogP 2.68 TPSA 73.7	✓ Ro5	✓ Clean	`c1cc(c(cc1CO)c2ccc(nc2)N3CCC(CC3)C(=O)O)F`
4VM	5BNS	P0A6R0	470.5 Da LogP 4.46 TPSA 78.4	✓ Ro5	✓ Clean	`c1cc2cc(ccc2nc1)CNC(=O)C3CCN(CC3)c4ccc(cn4)c5cc…`
4VN	5BQS	C1CIR8	346.8 Da LogP 3.20 TPSA 73.7	✓ Ro5	✓ Clean	`c1cc(c(cc1CO)c2ccc(nc2)N3CCC(CC3)C(=O)O)Cl`
669	1MZS	P0A6R0	450.3 Da LogP 5.87 TPSA 88.8	1 viol.	✓ Clean	`c1cc(c(c(c1)Cl)COc2ccc3c(c2)cc(n3CCCCCC(=O)O)C(…`
CO8	5V0P	Q9KLJ3	893.7 Da LogP 1.03 TPSA 363.6	3 viol.	✓ Clean	`CCCCCCCC(=O)SCCNC(=O)CCNC(=O)[C@@H](C(C)(C)CO[P…`
MEE	2EFT	P0A6R0	48.1 Da LogP 0.55 TPSA 0.0	✓ Ro5	✓ Clean	`CS`
MLC	1HNJ	P0A6R0	853.6 Da LogP -1.86 TPSA 400.9	3 viol.	✓ Clean	`CC(C)(CO[P@@](=O)(O)O[P@@](=O)(O)OC[C@@H]1[C@H]…`
MLI	4X9K	Q9KLJ3	102.0 Da LogP -3.12 TPSA 80.3	✓ Ro5	✓ Clean	`C(C(=O)[O-])C(=O)[O-]`
OAX	6KVS	A7X0K2	266.7 Da LogP 1.90 TPSA 49.4	✓ Ro5	✓ Clean	`c1cc(ccc1C(=O)NCN(CC2CC2)C=O)Cl`
OCA	5KP2	Q9KLJ3	144.2 Da LogP 2.43 TPSA 37.3	✓ Ro5	✓ Clean	`CCCCCCCC(=O)O`
UT7	6X7R	P0A6R0	751.5 Da LogP -2.60 TPSA 366.8	3 viol.	✓ Clean	`CC(C)(COP(=O)(O)OP(=O)(O)OC[C@@H]1[C@H]([C@H]([…`

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
CHEMBL180466	P0DB00	8.52	487.5 Da LogP 5.50 TPSA 109.8	1 viol.	✓ Clean	`CS(=O)(=O)c1ccc(-c2ccc(C(=O)Nc3ccccc3C(=O)O)cc2…`
CHEMBL370931	P0DB00	8.40	425.4 Da LogP 5.80 TPSA 95.9	1 viol.	✓ Clean	`O=C(Nc1cccc(O)c1C(=O)O)c1ccc(-c2ccccc2)c(Oc2ccc…`
CHEMBL191827	P0DB00	7.47	428.2 Da LogP 4.90 TPSA 95.9	✓ Ro5	✓ Clean	`O=C(Nc1cccc(O)c1C(=O)O)c1ccc(Br)c(Oc2ccccc2)c1`
CHEMBL175848	P0DB00	7.30	409.4 Da LogP 6.10 TPSA 75.6	1 viol.	✓ Clean	`O=C(Nc1ccccc1C(=O)O)c1ccc(-c2ccccc2)c(Oc2ccccc2…`

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
ZINC1529498	1.000	200.3 Da LogP 3.99 TPSA 37.3	✓ Ro5	✓ Clean	`CCCCCCCCCCCC(=O)O`
ZINC1530417	1.000	228.4 Da LogP 4.77 TPSA 37.3	✓ Ro5	✓ Clean	`CCCCCCCCCCCCCC(=O)O`
ZINC1628119	1.000	214.3 Da LogP 4.38 TPSA 37.3	✓ Ro5	✓ Clean	`CCCCCCCCCCCCC(=O)O`
ZINC138457918	0.850	228.3 Da LogP 3.56 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCCCC(=O)CCCCC(=O)O`
ZINC138458029	0.850	228.3 Da LogP 3.56 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCCC(=O)CCCCCC(=O)O`
ZINC144395054	0.850	242.4 Da LogP 3.95 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCC(=O)CCCCCCCC(=O)O`
ZINC14619628	0.850	270.4 Da LogP 4.73 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCC(=O)CCCCCCCCCC(=O)O`
ZINC196749828	0.850	214.3 Da LogP 3.17 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCCC(=O)CCCCC(=O)O`
ZINC2113934076	0.850	256.4 Da LogP 4.34 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCCC(=O)CCCCCCCC(=O)O`
ZINC2113934082	0.850	256.4 Da LogP 4.34 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCCCC(=O)CCCCCCC(=O)O`
ZINC2113934083	0.850	256.4 Da LogP 4.34 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCCCCCC(=O)CCCCC(=O)O`
ZINC2243670	0.850	228.3 Da LogP 3.56 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCC(=O)CCCCCCC(=O)O`
ZINC2569203	0.850	214.3 Da LogP 3.17 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCC(=O)CCCCCC(=O)O`
ZINC4798470	0.850	270.4 Da LogP 4.73 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCCC(=O)CCCCCCCCC(=O)O`
ZINC5973005	0.850	242.4 Da LogP 3.95 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCCC(=O)CCCCCCC(=O)O`
ZINC71418182	0.850	270.4 Da LogP 4.73 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCCCCCCC(=O)CCCCC(=O)O`
ZINC79244776	0.850	270.4 Da LogP 4.73 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCCCC(=O)CCCCCCCC(=O)O`
ZINC86037082	0.850	270.4 Da LogP 4.73 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCCCCCC(=O)CCCCCC(=O)O`
ZINC86037089	0.850	270.4 Da LogP 4.73 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCCCCC(=O)CCCCCCC(=O)O`
ZINC86039283	0.850	242.4 Da LogP 3.95 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCCCCC(=O)CCCCC(=O)O`
ZINC3160730	0.810	214.3 Da LogP 3.17 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCCCC(=O)CCCC(=O)O`
ZINC4582907	0.810	200.3 Da LogP 2.78 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCCC(=O)CCCC(=O)O`
ZINC4727003	0.810	312.4 Da LogP 4.69 TPSA 71.4	✓ Ro5	✓ Clean	`CCCCCCC(=O)CCC(=O)CCCCCCCC(=O)O`
ZINC86037074	0.810	270.4 Da LogP 4.73 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCCCCCCCC(=O)CCCC(=O)O`
ZINC2378801	0.800	200.3 Da LogP 2.78 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCC(=O)CCCCC(=O)O`
ZINC2113934081	0.762	270.4 Da LogP 4.73 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCC(=O)CCCCCCCCCCC(=O)O`
ZINC2243668	0.762	214.3 Da LogP 3.17 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCC(=O)CCCCCCC(=O)O`
ZINC2378799	0.762	200.3 Da LogP 2.78 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCC(=O)CCCCCC(=O)O`
ZINC33820423	0.762	242.4 Da LogP 3.95 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCC(=O)CCCCCCCCC(=O)O`
ZINC2387442	0.739	246.4 Da LogP 4.34 TPSA 37.3	✓ Ro5	✓ Clean	`CCCCCCCCSCCCCC(=O)O`
ZINC31778284	0.739	310.4 Da LogP 4.47 TPSA 71.4	✓ Ro5	✓ Clean	`CCCCCCC(=O)/C=C\C(=O)CCCCCCCC(=O)O`
ZINC5540108	0.739	310.4 Da LogP 4.47 TPSA 71.4	✓ Ro5	✓ Clean	`CCCCCCC(=O)/C=C/C(=O)CCCCCCCC(=O)O`
ZINC64633397	0.739	226.4 Da LogP 4.55 TPSA 37.3	✓ Ro5	✓ Clean	`CCCCCC/C=C\CCCCCC(=O)O`
ZINC59545317	0.727	200.3 Da LogP 2.78 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCCCC(=O)CCC(=O)O`
ZINC59545320	0.727	270.4 Da LogP 4.73 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCCCCCCCCC(=O)CCC(=O)O`
ZINC59545336	0.727	214.3 Da LogP 3.17 TPSA 54.4	✓ Ro5	✓ Clean	`CCCCCCCCC(=O)CCC(=O)O`
ZINC102262905	0.721	291.3 Da LogP 2.80 TPSA 75.6	✓ Ro5	✓ Clean	`O=C(NC[C@H]1CC[C@H](C(=O)O)CC1)OCc1ccccc1`
ZINC252504457	0.721	291.3 Da LogP 2.80 TPSA 75.6	✓ Ro5	✓ Clean	`O=C(NC[C@H]1CC[C@H](C(=O)O)CC1)OCc1ccccc1`
ZINC5947040	0.721	291.3 Da LogP 2.80 TPSA 75.6	✓ Ro5	✓ Clean	`O=C(NCC1CCC(C(=O)O)CC1)OCc1ccccc1`
ZINC117404097	0.708	258.4 Da LogP 4.13 TPSA 57.5	✓ Ro5	✓ Clean	`CCCCCCC[C@@H](O)CCCCCCC(=O)O`
ZINC136729993	0.708	272.4 Da LogP 4.52 TPSA 57.5	✓ Ro5	✓ Clean	`CCCCCCC[C@@H](O)CCCCCCCC(=O)O`
ZINC14454563	0.708	286.5 Da LogP 4.91 TPSA 57.5	✓ Ro5	✓ Clean	`CCCCCC[C@@H](O)CCCCCCCCCC(=O)O`
ZINC1600679	0.708	264.4 Da LogP 2.63 TPSA 71.4	✓ Ro5	✓ Clean	`CCCCCCS(=O)(=O)CCCCCC(=O)O`
ZINC33822296	0.708	286.5 Da LogP 4.91 TPSA 57.5	✓ Ro5	✓ Clean	`CCCCC[C@H](O)CCCCCCCCCCC(=O)O`
ZINC59200967	0.708	272.4 Da LogP 4.52 TPSA 57.5	✓ Ro5	✓ Clean	`CCCCCCC[C@H](O)CCCCCCCC(=O)O`
ZINC59200973	0.708	272.4 Da LogP 4.52 TPSA 57.5	✓ Ro5	✓ Clean	`CCCCCCCCC[C@H](O)CCCCCC(=O)O`
ZINC59200976	0.708	272.4 Da LogP 4.52 TPSA 57.5	✓ Ro5	✓ Clean	`CCCCCCCCC[C@@H](O)CCCCCC(=O)O`
ZINC8220964	0.708	316.5 Da LogP 4.27 TPSA 77.8	✓ Ro5	✓ Clean	`CCCCCCCC[C@@H](O)[C@@H](O)CCCCCCCC(=O)O`
ZINC85857782	0.708	286.5 Da LogP 4.91 TPSA 57.5	✓ Ro5	✓ Clean	`CCCCCCCCC[C@@H](O)CCCCCCC(=O)O`
ZINC85858219	0.708	272.4 Da LogP 4.52 TPSA 57.5	✓ Ro5	✓ Clean	`CCCCCCCCCC[C@H](O)CCCCC(=O)O`

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.