2QQG: Hst2

Hst2 bound to ADP-HPD, acetyllated histone H4 and nicotinamide. Determined by X-ray diffraction at 2.05 Å resolution. Released 9 Oct 2007.

Method: X-ray diffraction
Resolution: 2.05 Å
Organism: Saccharomyces cerevisiae
Chains: 2
Atoms: 2,527
Mol. weight: 36.84 kDa
Ligands: ZN, A1R, NCA
Released: 9 Oct 2007

Explore 2QQG in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

2QQG contains 19 α-helices and 17 β-strands across 2 chains. 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: 19 helices, 15 β-strands

Element	Residues	Length	Sheet
α-helix	9-21	13
β-strand	27-31	5	1
α-helix	33-39	7
α-helix	50-57	8
α-helix	63-67	5
β-strand	68	1	2
α-helix	69-74	6
α-helix	77-86	10
α-helix	95-105	11
β-strand	109-114	6	1
α-helix	120-123	4
α-helix	128-130	3
β-strand	131-133	3	1
β-strand	136-143	8	3
β-strand	149-150	2	3
α-helix	152-158	7
β-strand	169	1	4
α-helix	175	1
β-strand	176	1	4
β-strand	177-181	5	3
α-helix	182-183	2
β-strand	184	1	2
β-strand	187	1	5
α-helix	188-189	2
α-helix	190-206	17
β-strand	218-222	5	1
β-strand	229	1	6
α-helix	231-233	3
α-helix	235-237	3
β-strand	244-247	4	1
α-helix	254-257	4
β-strand	264-266	3	1
α-helix	270-281	12
α-helix	284-292	9

Chain B: 0 helices, 2 β-strands

Element	Residues	Length	Sheet
β-strand	15	1	5
β-strand	17	1	6

Molecules and chains

Molecule	Chains	Type	Length	Organism	UniProt
NAD-dependent deacetylase HST2	A	protein	308	Saccharomyces cerevisiae	P53686 (AlphaFold model)
Histone H4	B	protein	11		P02309 (AlphaFold model)

Sequence of entity 1 (A), FASTA

>2QQG_1 NAD-dependent deacetylase HST2 (chains A)
MRGSHHHHHHGMASMSVSTASTEMSVRKIAAHMKSNPNAKVIFMVGAGISTSCGIPDFRS
PGTGLYHNLARLKLPYPEAVFDVDFFQSDPLPFYTLAKELYPGNFRPSKFHYLLKLFQDK
DVLKRVYTQNIDTLERQAGVKDDLIIEAHGSFAHCHCIGCGKVYPPQVFKSKLAEHPIKD
FVKCDVCGELVKPAIVFFGEDLPDSFSETWLNDSEWLREKITTSGKHPQQPLVIVVGTSL
AVYPFASLPEEIPRKVKRVLCNLETVGDFKANKRPTDLIVHQYSDEFAEQLVEELGWQED
FEKILTAQ

Sequence of entity 2 (B), FASTA

>2QQG_2 Histone H4 (chains B)
KGGAKRHRKIL

Ligands and cofactors

ID	Name	Formula	Copies
ZN	Zinc ion	Zn	1
A1R	5'-O-[(S)-{[(S)-{[(2R,3R,4S)-3,4-dihydroxypyrrolidin-2-yl]methoxy}(hydroxy)phos…	C15 H24 N6 O12 P2	1
NCA	Nicotinamide	C6 H6 N2 O	1

Primary citation

Structural basis for nicotinamide inhibition and base exchange in sir2 enzymes. Sanders, B.D., Zhao, K., Slama, J.T. et al. Mol Cell (2007) 25:463-472. DOI 10.1016/j.molcel.2006.12.022 · PubMed

Other PDB entries of the same protein (UniProt P53686 (AlphaFold model), which also has an AlphaFold model), best resolution first:

1Q1A 1.5 Å, Structure of the yeast Hst2 protein deacetylase in ternary complex with 2'-O-acetyl ADP…
1SZD 1.5 Å, Structural basis for nicotinamide cleavage and ADP-ribose transfer by NAD+-dependent…
1SZC 1.75 Å, Structural basis for nicotinamide cleavage and ADP-ribose transfer by NAD+-dependent…
7F4E 1.78 Å, Crystal structure of Hst2 in complex with H3K9bz peptide
7F51 1.98 Å, Crystal structure of Hst2 in complex with 2'-O-Benzoyl ADP Ribose
2OD2 2.0 Å, Crystal Structure of yHst2 I117F mutant bound to carba-NAD+ and an acetylated H4 peptide
2OD7 2.0 Å, Crystal Structure of yHst2 bound to the intermediate analogue ADP-HPD, and and aceylated…
2QQF 2.0 Å, Hst2 bound to ADP-HPD and Acetylated histone H4
2OD9 2.05 Å, Structural Basis for Nicotinamide Inhibition and Base Exchange in Sir2 Enzymes
1Q14 2.5 Å, Structure and autoregulation of the yeast Hst2 homolog of Sir2
1Q17 2.7 Å, Structure of the yeast Hst2 protein deacetylase in ternary complex with 2'-O-acetyl ADP…

Browse structure collections

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