2JSM | pdb_00002jsm

MONOMERIC HUMAN TELOMERE DNA TETRAPLEX WITH 3+1 STRAND FOLD TOPOLOGY, TWO EDGEWISE LOOPS AND DOUBLE-CHAIN REVERSAL LOOP, NMR, 10 STRUCTURES, Form 1 Natural

• PDB DOI: https://doi.org/10.2210/pdb2JSM/pdb
• NAKB: 2JSM

• Classification: DNA
• Mutation(s): No 


• Deposited: 2007-07-09 Released: 2008-07-08 
• Deposition Author(s): Kuryavyi, V.V., Phan, A.T., Luu, K.N., Patel, D.J.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 50 
• Conformers Submitted: 10 
• Selection Criteria: structures with the lowest energy 

Literature

Structure of two intramolecular G-quadruplexes formed by natural human telomere sequences in K+ solution

Phan, A.T., Kuryavyi, V., Luu, K.N., Patel, D.J.

(2007) Nucleic Acids Res 35: 6517-6525

• PubMed: 17895279 
• DOI: https://doi.org/10.1093/nar/gkm706
• Primary Citation Related Structures: 
  2JSK, 2JSL, 2JSM, 2JSQ


• PubMed Abstract: 
  

  Intramolecular G-quadruplexes formed by human telomere sequences are attractive anticancer targets. Recently, four-repeat human telomere sequences have been shown to form two different intramolecular (3 + 1) G-quadruplexes in K(+) solution (Form 1 and Form 2). Here we report on the solution structures of both Form 1 and Form 2 adopted by natural human telomere sequences. Both structures contain the (3 + 1) G-tetrad core with one double-chain-reversal and two edgewise loops, but differ in the successive order of loop arrangements within the G-quadruplex scaffold. Our results provide the structural details at the two ends of the G-tetrad core in the context of natural sequences and information on different loop conformations. This structural information might be important for our understanding of telomere G-quadruplex structures and for anticancer drug design targeted to such scaffolds.

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Organizational Affiliation: 
• Structural Biology Program, Memorial Sloan-Kettering Cancer Center, New York, NY 10021, USA. [e-mail]

Biological Assembly 1  

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 7.29 kDa 
• Atom Count: 485 
• Modeled Residue Count: 23 
• Deposited Residue Count: 23 
• Unique nucleic acid chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Length	Organism	Image
HUMAN TELOMERE DNA	A	23	N/A

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 50 
• Conformers Submitted: 10 
• Selection Criteria: structures with the lowest energy 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2008-07-08 
Deposition Author(s): Kuryavyi, V.V., Phan, A.T., Luu, K.N., Patel, D.J.

Revision History  

• Version 1.0: 2008-07-08
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2022-03-16
  Changes: Data collection, Database references, Derived calculations
• Version 1.3: 2024-05-29
  Changes: Data collection