Protein profile

KP13_05499

3-oxoacyl-[acyl-carrier-protein] synthase 2

Genome: KpKP13

Gene: fabF AHE44505.1 Structure source: AlphaFold + ColabFold UniProt A0A0H3GTQ4

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Amino acids 424

Annotations 6

Features 25

PDB binders 13

Druggability 0.799

Overview

Basic information about this protein and its source genome.

Accession: KP13_05499
Assembly: Klebsiella pneumoniae subsp. pneumoniae Kp13, complete sequence
Gene: fabF AHE44505.1
Status: annotated
Amino acids: 424
Structure source: AlphaFold + ColabFold

2.3.1.179

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]. 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:0016747 Catalysis of the transfer of an acyl group, other than amino-acyl, from one compound (donor) to another (acceptor). GO:0005829 The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.

Target profile

Computed evidence for target prioritization.

Human off-target: hit
Human identity (%): 48.077
Human E-value: 1.78e-10
Gut microbiome off-target: hit
Essential (DEG): Y
DEG identity (%): 50.939
DEG E-value: 4.19e-148
Localization: Cytoplasmic
ColabFold pLDDT: 96.96

Selected Druggability evidence

AlphaFold / UniProt model

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 0.799

Structure A0A0H3GTQ4

Pocket Pocket 1

P2Rank 0.854

Structure A0A0H3GTQ4

Pocket Pocket 1

ColabFold model

FPocket 0.794 · Pocket 1

P2Rank 0.876 · Pocket 1

Core conservation Accessory gene

Roary accessory

CoreCruncher accessory

Gut microbiome 64 / 4744 genomes with a hit

Normalized 0.013

Sequence

Primary amino-acid sequence viewer.

Functional Annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 5 GO

Enzyme Commission (EC)

2.3.1.179

Gene Ontology (GO)

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].
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:0016747 Catalysis of the transfer of an acyl group, other than amino-acyl, from one compound (donor) to another (acceptor).
GO:0005829 The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.

Sequence Features

Domain/signature hits from InterPro and related databases.

25 records

Show feature table

Start	End	DB	Term	Name
3	424	PIRSF	PIRSF000447	KAS_II
3	424	InterPro	IPR017568	3-oxoacyl-[acyl-carrier-protein] synthase 2
6	421	PANTHER	PTHR11712	POLYKETIDE SYNTHASE-RELATED
6	421	InterPro	IPR000794	Beta-ketoacyl synthase
166	182	ProSitePatterns	PS00606	Ketosynthase family 3 (KS3) active site signature.
166	182	InterPro	IPR018201	Beta-ketoacyl synthase, active site
6	264	SUPERFAMILY	SSF53901	Thiolase-like
6	264	InterPro	IPR016039	Thiolase-like
3	423	FunFam	G3DSA:3.40.47.10:FF:000009	3-oxoacyl-[acyl-carrier-protein] synthase 2
2	424	Gene3D	G3DSA:3.40.47.10	-
2	424	InterPro	IPR016039	Thiolase-like
8	423	SMART	SM00825	Beta-ketoacyl synthase
8	423	InterPro	IPR020841	Polyketide synthase, beta-ketoacyl synthase domain
6	259	Pfam	PF00109	Beta-ketoacyl synthase, N-terminal domain
6	259	InterPro	IPR014030	Beta-ketoacyl synthase, N-terminal
5	422	ProSiteProfiles	PS52004	Ketosynthase family 3 (KS3) domain profile.
5	422	InterPro	IPR020841	Polyketide synthase, beta-ketoacyl synthase domain
6	420	CDD	cd00834	KAS_I_II
6	420	InterPro	IPR000794	Beta-ketoacyl synthase
267	379	Pfam	PF02801	Beta-ketoacyl synthase, C-terminal domain
267	379	InterPro	IPR014031	Beta-ketoacyl synthase, C-terminal
227	423	SUPERFAMILY	SSF53901	Thiolase-like
227	423	InterPro	IPR016039	Thiolase-like
6	421	NCBIfam	TIGR03150	beta-ketoacyl-ACP synthase II
6	421	InterPro	IPR017568	3-oxoacyl-[acyl-carrier-protein] synthase 2

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 + 2

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

Entry	Method	Resolution	Chain	Coverage	Links	Status
AlphaFold AF_A0A0H3GTQ4	AlphaFold	—	—	full sequence	—	Viewing
ColabFold KP13_05499	ColabFold	—	—	full sequence	—	Loaded

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				0.799
13				0.252

Pockets (P2RANK)

Showing top-ranked P2Rank candidates by probability. Probability is color-coded per P2Rank calibration: high (≥ 0.5), medium (0.2 – 0.49), low (< 0.2).

P2RANK	Score	Probability
1	16.1	0.77
2	2.82	0.087
3	1.79	0.033

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				0.794

Pockets (P2RANK)

Showing top-ranked P2Rank candidates by probability. Probability is color-coded per P2Rank calibration: high (≥ 0.5), medium (0.2 – 0.49), low (< 0.2).

P2RANK	Score	Probability
1	18.03	0.813
2	3.44	0.124
3	2.27	0.056
4	1.65	0.027

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.

63 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
1LR	4JPF	G3XDA2	257.2 Da LogP 2.34 TPSA 86.6	✓ Ro5	✓ Clean	`c1ccc(cc1)C(=O)Nc2cccc(c2O)C(=O)O`
1X9	4LS7	O34340	223.3 Da LogP 1.11 TPSA 72.7	✓ Ro5	✓ Clean	`C/C=C/C/C=C/CCC(=O)[C@@H]1[C@@H](O1)C(=O)N`
1XG	4LS8	O34340	225.3 Da LogP 1.09 TPSA 80.4	✓ Ro5	✓ Clean	`C/C=C/C/C=C/CCC(=O)[C@@H](CC(=O)N)O`
840	3I8P	P0AAI5	455.5 Da LogP 1.96 TPSA 153.4	✓ Ro5	✓ Clean	`C[C@@]1([C@H]2[C@@]34C[C@]35CC2(C=CC1=O)[C@H]([…`
CER	1B3N	P0AAI5	225.3 Da LogP 1.09 TPSA 80.4	✓ Ro5	✓ Clean	`C\C=C\C\C=C\CCC(=O)[C@H](CC(=O)N)O`
DAO	2GFY	P0AAI5	200.3 Da LogP 3.99 TPSA 37.3	✓ Ro5	✓ Clean	`CCCCCCCCCCCC(=O)O`
MRJ	6OLT	P0AAI5	523.6 Da LogP 2.14 TPSA 174.3	2 viol.	✓ Clean	`CCCCCCCCCCCC(=O)NCCNC(=O)CCNC(=O)[C@@H](C(C)(C)…`
MU4	6OKG	P0AAI5	579.7 Da LogP 3.70 TPSA 174.3	2 viol.	✓ Clean	`CCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCNC(=O)[C@@H](C(C…`
N32	4F32	A4JL30	425.5 Da LogP 4.02 TPSA 123.9	✓ Ro5	✓ Clean	`C[C@@]1([C@@H]2C[C@@H]3CC[C@]2(CC3=C)C=CC1=O)CC…`
N3A	3HO9	P0AAI5	441.5 Da LogP 2.99 TPSA 144.2	✓ Ro5	✓ Clean	`C[C@@]1([C@@H]2C[C@@H]3C[C@H]([C@]2(CC3=C)C=CC1…`
P9A	3G0Y	P0AAI5	443.5 Da LogP 3.46 TPSA 133.2	✓ Ro5	✓ Clean	`C[C@@]12C[C@@]34CCC(=O)[C@@]([C@@H]3[C@@H](O1)C…`
P9C	3G11	P0AAI5	519.6 Da LogP 4.85 TPSA 133.2	1 viol.	✓ Clean	`C[C@]12C[C@]34C[C@H]1C[C@@H]([C@H]3[C@](C(=O)C[…`
PMN	2GFX	P0AAI5	441.5 Da LogP 3.23 TPSA 133.2	✓ Ro5	✓ Clean	`C[C@]12C[C@]34C[C@H]1C[C@@H]([C@H]3[C@](C(=O)C=…`

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
ZINC1429478	1.000	257.2 Da LogP 2.34 TPSA 86.6	✓ Ro5	✓ Clean	`O=C(Nc1cccc(C(=O)O)c1O)c1ccccc1`
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`
ZINC168677815	1.000	441.5 Da LogP 3.23 TPSA 133.2	✓ Ro5	✓ Clean	`C[C@@]1(CCC(=O)Nc2c(O)ccc(C(=O)O)c2O)C(=O)C=C[C…`
ZINC256352556	1.000	441.5 Da LogP 3.23 TPSA 133.2	✓ Ro5	✓ Clean	`C[C@@]1(CCC(=O)Nc2c(O)ccc(C(=O)O)c2O)C(=O)C=C[C…`
ZINC29050726	1.000	441.5 Da LogP 3.23 TPSA 133.2	✓ Ro5	✓ Clean	`C[C@]12C[C@@]34C=CC(=O)[C@@](C)(CCC(=O)Nc5c(O)c…`
ZINC29050858	1.000	425.5 Da LogP 4.02 TPSA 123.9	✓ Ro5	✓ Clean	`C=C1C[C@@]23C=CC(=O)[C@@](C)(CCC(=O)Nc4c(O)ccc(…`
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`
ZINC1429482	0.771	291.7 Da LogP 3.00 TPSA 86.6	✓ Ro5	✓ Clean	`O=C(Nc1cccc(C(=O)O)c1O)c1ccc(Cl)cc1`
ZINC1429492	0.771	271.3 Da LogP 2.65 TPSA 86.6	✓ Ro5	✓ Clean	`Cc1ccc(C(=O)Nc2cccc(C(=O)O)c2O)cc1`
ZINC1432221	0.771	275.2 Da LogP 2.48 TPSA 86.6	✓ Ro5	✓ Clean	`O=C(Nc1cccc(C(=O)O)c1O)c1ccc(F)cc1`
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`
ZINC1429473	0.750	313.4 Da LogP 3.64 TPSA 86.6	✓ Ro5	✓ Clean	`CC(C)(C)c1ccc(C(=O)Nc2cccc(C(=O)O)c2O)cc1`
ZINC97718	0.742	241.2 Da LogP 2.64 TPSA 66.4	✓ Ro5	✓ Clean	`O=C(Nc1ccccc1C(=O)O)c1ccccc1`
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`
ZINC1429487	0.730	336.1 Da LogP 3.11 TPSA 86.6	✓ Ro5	✓ Clean	`O=C(Nc1cccc(C(=O)O)c1O)c1cccc(Br)c1`
ZINC1432220	0.730	275.2 Da LogP 2.48 TPSA 86.6	✓ Ro5	✓ Clean	`O=C(Nc1cccc(C(=O)O)c1O)c1cccc(F)c1`
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`
ZINC104125601	0.722	271.3 Da LogP 2.43 TPSA 75.6	✓ Ro5	✓ Clean	`COC(=O)c1cccc(NC(=O)c2ccccc2)c1O`
ZINC4593317	0.714	291.7 Da LogP 3.00 TPSA 86.6	✓ Ro5	✓ Clean	`O=C(Nc1cccc(C(=O)O)c1O)c1ccccc1Cl`

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.