1BOB

HISTONE ACETYLTRANSFERASE HAT1 FROM SACCHAROMYCES CEREVISIAE IN COMPLEX WITH ACETYL COENZYME A

• PDB DOI: https://doi.org/10.2210/pdb1BOB/pdb

• Classification: ACETYLTRANSFERASE
• Organism(s): Saccharomyces cerevisiae
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 1998-07-02 Released: 1999-04-20 
• Deposition Author(s): Dutnall, R.N., Tafrov, S.T., Sternglanz, R., Ramakrishnan, V.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.269 
• R-Value Work: 0.204 
• R-Value Observed: 0.204 

Literature

Structure of the histone acetyltransferase Hat1: a paradigm for the GCN5-related N-acetyltransferase superfamily.

Dutnall, R.N., Tafrov, S.T., Sternglanz, R., Ramakrishnan, V.

(1998) Cell 94: 427-438

• PubMed: 9727486 
• DOI: https://doi.org/10.1016/s0092-8674(00)81584-6
• Primary Citation of Related Structures:  
  1BOB


• PubMed Abstract: 
  

  We have solved the crystal structure of the yeast histone acetyltransferase Hat1-acetyl coenzyme A (AcCoA) complex at 2.3 A resolution. Hat1 has an elongated, curved structure, and the AcCoA molecule is bound in a cleft on the concave surface of the protein, marking the active site of the enzyme. A channel of variable width and depth that runs across the protein is probably the binding site for the histone substrate. A model for histone H4 binding by Hat1 is discussed in terms of possible sources of specific lysine recognition by the enzyme. The structure of Hat1 provides a model for the structures of the catalytic domains of a protein superfamily that includes other histone acetyltransferases such as Gcn5 and CBP.

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Organizational Affiliation: 

Department of Biochemistry, University of Utah School of Medicine, Salt Lake City 84132, USA. [e-mail]

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 38.42 kDa 
• Atom Count: 2,696 
• Modelled Residue Count: 306 
• Deposited Residue Count: 320 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
HISTONE ACETYLTRANSFERASE	A	320	Saccharomyces cerevisiae	Mutation(s): 0  Gene Names: HAT1 EC: 2.3.1.48
UniProt
Find proteins for Q12341 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c)) Explore Q12341  Go to UniProtKB:  Q12341

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ACO	C [auth A]	ACETYL COENZYME *A C23 H38 N7 O17 P3 S ZSLZBFCDCINBPY-ZSJPKINUSA-N
CA	B [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.269 
• R-Value Work: 0.204 
• R-Value Observed: 0.204 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 111.3	α = 90
b = 47.9	β = 90.3
c = 75.7	γ = 90

Software Package:

Software Name	Purpose
SOLVE	phasing
X-PLOR	model building
X-PLOR	refinement
DENZO	data reduction
SCALEPACK	data scaling
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1999-04-20 
Deposition Author(s): Dutnall, R.N., Tafrov, S.T., Sternglanz, R., Ramakrishnan, V.

Revision History  

• Version 1.0: 1999-04-20
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2024-02-07
  Changes: Data collection, Database references, Derived calculations