2EZN | pdb_00002ezn

SOLUTION NMR STRUCTURE OF CYANOVIRIN-N ENSEMBLE OF 40 SIMULATED ANNEALING STRUCTURES

• PDB DOI: https://doi.org/10.2210/pdb2EZN/pdb

• Classification: HIV-INACTIVATING PROTEIN
• Organism(s): Nostoc ellipsosporum
• Mutation(s): No 


• Deposited: 1998-05-06 Released: 1999-05-11 
• Deposition Author(s): Bewley, C.A., Gronenborn, A.M., Clore, G.M.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Submitted: 40 

Literature

Solution structure of cyanovirin-N, a potent HIV-inactivating protein.

Bewley, C.A., Gustafson, K.R., Boyd, M.R., Covell, D.G., Bax, A., Clore, G.M., Gronenborn, A.M.

(1998) Nat Struct Biol 5: 571-578

• PubMed: 9665171 
• DOI: https://doi.org/10.1038/828
• Primary Citation Related Structures: 
  2EZM, 2EZN


• PubMed Abstract: 
  

  The solution structure of cyanovirin-N, a potent 11,000 Mr HIV-inactivating protein that binds with high affinity and specificity to the HIV surface envelope protein gp120, has been solved by nuclear magnetic resonance spectroscopy, including extensive use of dipolar couplings which provide a priori long range structural information. Cyanovirin-N is an elongated, largely beta-sheet protein that displays internal two-fold pseudosymmetry. The two sequence repeats (residues 1-50 and 51-101) share 32% sequence identity and superimpose with a backbone atomic root-mean-square difference of 1.3 A. The two repeats, however, do not form separate domains since the overall fold is dependent on numerous contacts between them. Rather, two symmetrically related domains are formed by strand exchange between the two repeats. Analysis of surface hydrophobic clusters suggests the location of potential binding sites for protein-protein interactions.

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Organizational Affiliation: 
• Laboratory of Chemical Physics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892-0520, USA.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 11.02 kDa 
• Atom Count: 771 
• Modeled Residue Count: 101 
• Deposited Residue Count: 101 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CYANOVIRIN-N	A	101	Nostoc ellipsosporum	Mutation(s): 0
UniProt
Find proteins for P81180 (Nostoc ellipsosporum) Explore P81180  Go to UniProtKB:  P81180

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Submitted: 40 

Structure Validation

Entry History 

Deposition Data

• Released Date: 1999-05-11 
Deposition Author(s): Bewley, C.A., Gronenborn, A.M., Clore, G.M.

Revision History  

• Version 1.0: 1999-05-11
  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: 2022-03-09
  Changes: Database references, Derived calculations
• Version 1.4: 2024-10-23
  Changes: Data collection, Structure summary