1KDE

NORTH-ATLANTIC OCEAN POUT ANTIFREEZE PROTEIN TYPE III ISOFORM HPLC12 MUTANT, NMR, 22 STRUCTURES

• PDB DOI:  https://doi.org/10.2210/pdb1KDE/pdb

• Classification: ANTIFREEZE PROTEIN
• Organism(s): Zoarces americanus
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 1996-07-08 Released: 1997-04-21 
• Deposition Author(s): Sonnichsen, F.D., Deluca, C.I., Davies, P.L., Sykes, B.D.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 50 
• Conformers Submitted: 22 
• Selection Criteria: X-PLOR ENERGIES 

Literature

Refined solution structure of type III antifreeze protein: hydrophobic groups may be involved in the energetics of the protein-ice interaction.

Sonnichsen, F.D., DeLuca, C.I., Davies, P.L., Sykes, B.D.

(1996) Structure 4: 1325-1337

• PubMed: 8939756 
• DOI: https://doi.org/10.1016/s0969-2126(96)00140-2
• Primary Citation of Related Structures:  
  1KDE, 1KDF


• PubMed Abstract: 
  

Antifreeze proteins are found in certain fish inhabiting polar sea water. These proteins depress the freezing points of blood and body fluids below that of the surrounding sea water by binding to and inhibiting the growth of seed ice crystals. The proteins are believed to bind irreversibly to growing ice crystals in such a way as to change the curvature of the ice-water interface, leading to freezing point depression, but the mechanism of high-affinity ice binding is not yet fully understood.

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Related Citations: 

• Structure-Function Relationship in the Globular Type III Antifreeze Protein: Identification of a Cluster of Surface Residues Required for Binding to Ice
  Chao, H., Sonnichsen, F.D., Deluca, C.I., Sykes, B.D., Davies, P.L.
  (1994) Protein Sci 3: 1760

• The Nonhelical Structure of Antifreeze Protein Type III
  Sonnichsen, F.D., Sykes, B.D., Chao, H., Davies, P.L.
  (1993) Science 259: 1154

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Organizational Affiliation: 

Department of Physiology and Biophysics, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106-4970, USA. [e-mail]

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 7.53 kDa 
• Atom Count: 479 
• Modelled Residue Count: 65 
• Deposited Residue Count: 70 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ANTIFREEZE PROTEIN TYPE III ISOFORM HPLC12 MUTANT	A	70	Zoarces americanus	Mutation(s): 2  Gene Names: K38
UniProt
Find proteins for P19614 (Zoarces americanus) Explore P19614  Go to UniProtKB:  P19614

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 50 
• Conformers Submitted: 22 
• Selection Criteria: X-PLOR ENERGIES 

Structure Validation

Entry History 

Deposition Data

• Released Date: 1997-04-21 
Deposition Author(s): Sonnichsen, F.D., Deluca, C.I., Davies, P.L., Sykes, B.D.

Revision History  

• Version 1.0: 1997-04-21
  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: 2021-11-03
  Changes: Database references, Derived calculations, Other