Macromolecule Content

• Total Structure Weight: 20.00 kDa 
• Atom Count: 1370 
• Residue Count: 123 
• Unique protein chains: 1
• Unique nucleic acid chains: 2

1J5N

Solution Structure of the Non-Sequence-Specific HMGB protein NHP6A in complex with SRY DNA

• DOI: 10.2210/pdb1J5N/pdb
• NDB: 1J5N
• BMRB: 4869

• Classification: DNA BINDING PROTEIN/DNA
• Organism(s): Saccharomyces cerevisiae
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2002-05-15 Released: 2002-10-16 
• Deposition Author(s): Masse, J.E., Wong, B., Yen, Y.-M., Allain, F.H.-T., Johnson, R.C., Feigon, J.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 20 
• Selection Criteria: structures with acceptable covalent geometry 

Literature

The S. cerevisiae architectural HMGB protein NHP6A complexed with DNA: DNA and protein conformational changes upon binding

Masse, J.E., Wong, B., Yen, Y.-M., Allain, F.H.-T., Johnson, R.C., Feigon, J.

(2002) J Mol Biol 323: 263-284

• PubMed: 12381320 
• DOI: 10.1016/s0022-2836(02)00938-5
• Primary Citation of Related Structures:  
  1LWM, 1LWA, 1J5N


• PubMed Abstract: 
  

NHP6A is a non-sequence-specific DNA-binding protein from Saccharomyces cerevisiae which belongs to the HMGB protein family. Previously, we have solved the structure of NHP6A in the absence of DNA and modeled its interaction with DNA. Here, we present the refined solution structures of the NHP6A-DNA complex as well as the free 15bp DNA. Both the free and bound forms of the protein adopt the typical L-shaped HMGB domain fold. The DNA in the complex undergoes significant structural rearrangement from its free form while the protein shows smaller but significant conformational changes in the complex. Structural and mutational analysis as well as comparison of the complex with the free DNA provides insight into the factors that contribute to binding site selection and DNA deformations in the complex. Further insight into the amino acid determinants of DNA binding by HMGB domain proteins is given by a correlation study of NHP6A and 32 other HMGB domains belonging to both the DNA-sequence-specific and non-sequence-specific families of HMGB proteins. The resulting correlations can be rationalized by comparison of solved structures of HMGB proteins.

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Organizational Affiliation: 

Department of Chemistry and Biochemistry, University of California at Los Angeles, Los Angeles, CA 90095-1569, USA.

Macromolecules

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Nonhistone chromosomal protein 6A	A	93	Saccharomyces cerevisiae	Mutation(s): 0
Find proteins for P11632 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c)) Explore P11632  Go to UniProtKB:  P11632

Entity ID: 1
Molecule	Chains	Length	Organism	Image
5'-D(*GP*GP*GP*GP*TP*GP*AP*TP*TP*GP*TP*TP*CP*AP*G)-3'	B	15	N/A

Entity ID: 2
Molecule	Chains	Length	Organism	Image
5'-D(*CP*TP*GP*AP*AP*CP*AP*AP*TP*CP*AP*CP*CP*CP*C)-3'	C	15	N/A

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 20 
• Selection Criteria: structures with acceptable covalent geometry 
• OLDERADO: 1J5N Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2002-05-15 
• Released Date: 2002-10-16 
Deposition Author(s): Masse, J.E., Wong, B., Yen, Y.-M., Allain, F.H.-T., Johnson, R.C., Feigon, J.

Revision History 

• Version 1.0: 2002-10-16
  Type: Initial release
  
• Version 1.1: 2008-04-26
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance