1QP1 image
Deposition Date 1999-05-30
Release Date 1999-06-17
Last Version Date 2024-10-16
Entry Detail
PDB ID:
1QP1
Keywords:
Title:
KAPPA VARIABLE LIGHT CHAIN
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
Host Organism:
Method Details:
Experimental Method:
Resolution:
2.06 Å
R-Value Free:
0.21
R-Value Work:
0.15
R-Value Observed:
0.18
Space Group:
C 2 2 21
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:BENCE-JONES KAPPA I ANTIBODY BRE (LIGHT CHAIN)
Chain IDs:A, B, C
Chain Length:107
Number of Molecules:3
Biological Source:Homo sapiens
Primary Citation
Molecular structure of the amyloid-forming protein kappa I Bre.
J.Biochem.(Tokyo) 125 422 429 (1999)
PMID: 9990143

Abstact

The molecular structure of the amyloid-forming Bence-Jones protein kappa I Bre has been determined by X-ray crystallography at 2.0 A resolution. The fragment from the kappa chain of immunoprotein contains 107 amino acid residues, and polymerizes in the crystal form into a giant helical spiral, surrounding a cylinder of water 50 A in diameter with a repeat of 77.56 A, containing 12 kappa molecules, plus another 12 molecules from neighboring parallel spirals. The resulting structure has many features which have been found or suggested from studies on the protein fibrils found in amyloid deposits. From the results of the X-ray crystal structure a hypothesis is presented for the structure and formation of the amyloid fibril.

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Primary Citation of related structures