1SK5

The ultra-high resolution structure of d(CTTTTAAAAG)2: modulation of bending by T-A steps and its role in DNA recognition

• PDB DOI: https://doi.org/10.2210/pdb1SK5/pdb
• NAKB: 1SK5

• Classification: DNA
• Mutation(s): No 


• Deposited: 2004-03-04 Released: 2005-06-21 
• Deposition Author(s): Han, G.W., Langs, D., Kopka, M.L., Dickerson, R.E.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 0.89 Å
• R-Value Free: 0.144 
• R-Value Work: 0.126 
• R-Value Observed: 0.126 

Literature

The ultra-high resolution structure of d(CTTTTAAAAG)2: modulation of bending by T-A steps and its role in DNA recognition

Han, G.W., Langs, D., Kopka, M.L., Dickerson, R.E.

To be published.

Biological Assembly 1  

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 6.41 kDa 
• Atom Count: 587 
• Modelled Residue Count: 20 
• Deposited Residue Count: 20 
• Unique nucleic acid chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Length	Organism	Image
5'-D(*CP*TP*TP*TP*TP*AP*AP*AP*AP*G)-3'	A, B	10	N/A

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CA	C [auth A], D [auth A], E [auth A], F [auth A], G [auth A], H [auth A], I [auth B], J [auth B]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 0.89 Å
• R-Value Free: 0.144 
• R-Value Work: 0.126 
• R-Value Observed: 0.126 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 22.665	α = 90
b = 35.664	β = 101.69
c = 28.289	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
SHELXD	phasing
SnB	phasing
CROQUE	model building
SHELXL-97	refinement
CROQUE	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2005-06-21 
Deposition Author(s): Han, G.W., Langs, D., Kopka, M.L., Dickerson, R.E.

Revision History  

• Version 1.0: 2005-06-21
  Type: Initial release
  
• Version 1.1: 2008-04-29
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2018-02-14
  Changes: Experimental preparation
• Version 1.4: 2024-02-14
  Changes: Data collection, Database references, Derived calculations