Macromolecule Content

• Total Structure Weight: 14052.23 
• Atom Count: 967 
• Residue Count: 118 
• Unique protein chains: 1

1N72

Structure and Ligand of a Histone Acetyltransferase Bromodomain

• DOI: 10.2210/pdb1N72/pdb
• Entry 1N72 supersedes 1B91

• Classification: TRANSFERASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)


• Deposited: 2002-11-12 Released: 2002-12-11 
• Deposition Author(s): Dhalluin, C., Carlson, J.E., Zeng, L., He, C., Aggarwal, A.K., Zhou, M.-M.

---

Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 200 
• Conformers Submitted: 1 

Literature

Structure and Ligand of a Histone Acetyltransferase Bromodomain

Dhalluin, C., Carlson, J.E., Zeng, L., He, C., Aggarwal, A.K., Zhou, M.-M.

(1999) Nature 399: 491-496

• PubMed: 10365964 
• DOI: 10.1038/20974
• Primary Citation of Related Structures:  
  1B91


• PubMed Abstract: 
  

Histone acetylation is important in chromatin remodelling and gene activation. Nearly all known histone-acetyltransferase (HAT)-associated transcriptional co-activators contain bromodomains, which are approximately 110-amino-acid modules found in many chromatin-associated proteins. Despite the wide occurrence of these bromodomains, their three-dimensional structure and binding partners remain unknown. Here we report the solution structure of the bromodomain of the HAT co-activator P/CAF (p300/CBP-associated factor). The structure reveals an unusual left-handed up-and-down four-helix bundle. In addition, we show by a combination of structural and site-directed mutagenesis studies that bromodomains can interact specifically with acetylated lysine, making them the first known protein modules to do so. The nature of the recognition of acetyl-lysine by the P/CAF bromodomain is similar to that of acetyl-CoA by histone acetyltransferase. Thus, the bromodomain is functionally linked to the HAT activity of co-activators in the regulation of gene transcription.

---

Organizational Affiliation: 

Structural Biology Program, Department of Physiology and Biophysics, Mount Sinai School of Medicine, New York, New York 10029-6574, USA.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
HISTONE ACETYLTRANSFERASE	A	118	Homo sapiens	Mutation(s): 0  Gene Names: KAT2B (PCAF) EC: 2.3.1.48
Find proteins for Q92831 (Homo sapiens) Go to Gene View: KAT2B Go to UniProtKB:  Q92831

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 200 
• Conformers Submitted: 1 

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2002-11-12 
• Released Date: 2002-12-11 
• Deposition Author(s): Dhalluin, C., Carlson, J.E., Zeng, L., He, C., Aggarwal, A.K., Zhou, M.-M.
• This entry supersedes: 1B91

Revision History 

• Version 1.0: 2002-12-11
  Type: Initial release
• Version 1.1: 2008-04-28
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance