2AFP image
Deposition Date 1998-12-14
Release Date 1998-12-23
Last Version Date 2024-10-09
Entry Detail
PDB ID:
2AFP
Keywords:
ANTIFREEZE PROTEIN
Title:
THE SOLUTION STRUCTURE OF TYPE II ANTIFREEZE PROTEIN REVEALS A NEW MEMBER OF THE LECTIN FAMILY
Biological Source:
Source Organism:
Hemitripterus americanus (Taxon ID: 8094)
Host Organism:
Pichia pastoris
Method Details:
Experimental Method:
SOLUTION NMR
Conformers Calculated:
50
Conformers Submitted:
5
Selection Criteria:
GLOBAL ENERGY AND LEAST RESTRAINT VIOLATION
2AFP validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:PROTEIN (SEA RAVEN TYPE II ANTIFREEZE PROTEIN)
Chain IDs:A
Chain Length:129
Number of Molecules:1
Biological Source:Hemitripterus americanus
UniProt ID:P05140 Pfam ID:PF00059
Ligand Molecules
NA
Primary Citation
The solution structure of type II antifreeze protein reveals a new member of the lectin family.
Biochemistry 37 4712 4721 (1998)
PMID: 9537986 DOI: 10.1021/bi972788c

Abstact

A recombinant form of the sea raven type II antifreeze protein (SRAFP) has been produced using the Pichia pastoris expression system. The antifreeze activity of recombinant SRAFP is indistinguishable from that of the wild-type protein. The global fold of SRAFP has been determined by two-dimensional 1H homonuclear and three-dimensional 1H-¿15N¿ heteronuclear NMR spectroscopy using 785 NOE distance restraints and 47 angular restraints. The molecule folds into one globular domain that consists of two helices and nine beta-strands in two beta-sheets. The structure confirms the proposed existence of five disulfide bonds. The global fold of SRAFP is homologous to C-type lectins and pancreatic stone proteins, even though the sequence identity is only approximately 20%.

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Disease

Primary Citation of related structures
2AFP