ISDA

Deposition Date 1995-01-12

Release Date 1995-03-31

Last Version Date 2024-05-22

Entry Detail

PDB ID:

1LYP

Keywords:

LIPOPOLYSACCHARIDE-BINDING PROTEIN

Title:

THE SOLUTION STRUCTURE OF THE ACTIVE DOMAIN OF CAP18: A LIPOPOLYSACCHARIDE BINDING PROTEIN FROM RABBIT LEUKOCYTES

Biological Source:

Source Organism:

Oryctolagus cuniculus (Taxon ID: 9986)

Method Details:

Experimental Method:

SOLUTION NMR

Conformers Submitted:

Download Validation Report

Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:CAP18
Gene (Uniprot):CAP18
Chain IDs:A
Chain Length:32
Number of Molecules:1
Biological Source:Oryctolagus cuniculus

UniProt ID:P25230 Pfam ID:PF12153

Ligand Molecules

Primary Citation

The solution structure of the active domain of CAP18--a lipopolysaccharide binding protein from rabbit leukocytes.

Chen, C, Brock, R, Luh, F, Chou, P.J, Larrick, J.W, Huang, R.F, Huang, T.H, Larrick, J.W, Hirata, M, Balint, R.F, Huang, T.-H, Chen, C, Zhong, J, Wright, S.C, Larrick, J.W, Morgan, J.G, Palings, I, Hirata, M, Yen, M.H.Show

FEBS Lett. 370 46 52 (1995)

PMID: 7649303 DOI: 10.1016/0014-5793(95)00792-8

Abstact

We have employed the circular dichroism (CD) technique to characterize the solution structure of CAP18(106-137), a lipopolysaccharide (LPS) binding, antimicrobial protein, and its interaction with lipid A. Our results revealed that CAP18(106-137) may exist in at least three lipid A concentration-dependent, primarily helix conformations. The 'model' structure of CAP18(106-137) in 30% (v/v) TFE, determined by nuclear magnetic resonance (NMR) technique, was found to be a complete and very rigid helix. In this conformation, the cationic and hydrophobic groups of CAP18(106-137) are separated into patches and stripes in such a way that it can favorably interact with lipid A through either coulombic interaction with the diphosphoryl groups or hydrophobic interaction with the fatty acyl chains.

Legend

Protein

Chemical

Disease

Primary Citation of related structures