1HNK: Beta-ketoacyl-acyl carrier protein synthase III

Crystal structure of beta-ketoacyl-ACP synthase III, apo tetragonal form. Determined by X-ray diffraction at 1.9 Å resolution. Released 27 Dec 2000.

Method: X-ray diffraction
Resolution: 1.9 Å
Organism: Escherichia coli
Chains: 1
Atoms: 2,070
Mol. weight: 33.55 kDa
Released: 27 Dec 2000

Explore 1HNK in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

1HNK contains 14 α-helices and 14 β-strands across 1 chain. Residue ranges use author residue numbering, as in the PDB file, from PDBe. To see them in 3D, choose the Cartoon representation with Secondary structure coloring: helices, sheets and coils get different colors.

Chain A: 14 helices, 14 β-strands

Element	Residues	Length	Sheet
β-strand	2-11	10	1
β-strand	15-18	4	2
α-helix	19-23	5
α-helix	30-37	8
β-strand	41-44	4	2
α-helix	51-66	16
α-helix	70-72	3
β-strand	75-79	5	1
α-helix	90-98	9
β-strand	105-108	4	1
α-helix	111-113	3
α-helix	114-127	14
β-strand	133-140	8	1
β-strand	157	1	3
β-strand	160-169	10	1
β-strand	174-181	8	4
α-helix	219-230	12
α-helix	235-237	3
β-strand	240-243	4	4
α-helix	248-257	10
α-helix	262-264	3
β-strand	265	1	4
α-helix	269-272	4
β-strand	274	1	3
α-helix	276-278	3
α-helix	279-289	11
β-strand	298-303	6	4
β-strand	309-316	8	4

Molecules and chains

Molecule	Chains	Type	Length	Organism	UniProt
Beta-ketoacyl-acyl carrier protein synthase III	A	protein	317	Escherichia coli	P0A6R0 (AlphaFold model)

Sequence of entity 1 (A), FASTA

>1HNK_1 BETA-KETOACYL-ACYL CARRIER PROTEIN SYNTHASE III (chains A)
MYTKIIGTGSYLPEQVRTNADLEKMVDTSDEWIVTRTGIRERHIAAPNETVSTMGFEAAT
RAIEMAGIEKDQIGLIVVATTSATHAFPSAACQIQSMLGIKGCPAFDVAAACAGFTYALS
VADQYVKSGAVKYALVVGSDVLARTCDPTDRGTIIIFGDGAGAAVLAASEEPGIISTHLH
ADGSYGELLTLPNADRVNPENSIHLTMAGNEVFKVAVTELAHIVDETLAANNLDRSQLDW
LVPHQANLRIISATAKKLGMSMDNVVVTLDRHGNTSAASVPCALDEAVRDGRIKPGQLVL
LEAFGGGFTWGSALVRF

Primary citation

Refined structures of beta-ketoacyl-acyl carrier protein synthase III. Qiu, X., Janson, C.A., Smith, W.W. et al. J Mol Biol (2001) 307:341-356. DOI 10.1006/jmbi.2000.4457 · PubMed

Other PDB entries of the same protein (UniProt P0A6R0 (AlphaFold model), which also has an AlphaFold model), best resolution first:

8D1U 1.3 Å, E. coli beta-ketoacyl-[acyl carrier protein] synthase III (FabH) with an acetylated…
6X7R 1.35 Å, E. coli beta-ketoacyl-[acyl carrier protein] synthase III (FabH) in complex with…
9KA5 1.42 Å, Crystal structure of beta-ketoacyl-ACP synthase FabH C112Q from E. coli
1HNJ 1.46 Å, Crystal structure of beta-ketoacyl-ACP synthase III + malonyl-CoA
9KA6 1.47 Å, Crystal structure of beta-ketoacyl-ACP synthase FabH C112Q in complex with acyl-ACP from…
9KA2 1.5 Å, Crystal structure of beta-ketoacyl-ACP synthase FabH from E. coli
1HND 1.6 Å, Crystal structure of beta-ketoacyl-ACP synthase III-CoA complex
5BNM 1.7 Å, E. coli FabH with Small Molecule Inhibitor 1
1EBL 1.8 Å, The 1.8 a crystal structure and active site architecture of beta-ketoacyl-[acyl carrier…
3IL9 1.85 Å, Structure of E. coli FabH
5BNR 1.89 Å, E. coli Fabh with small molecule inhibitor 2
1HNH 1.9 Å, Crystal structure of beta-ketoacyl-ACP synthase III + degraded form of acetyl-CoA

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