2K0L image
Entry Detail
PDB ID:
2K0L
Title:
NMR structure of the transmembrane domain of the Outer Membrane Protein A from Klebsiella pneumoniae in DHPC micelles.
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2008-02-04
Release Date:
2008-12-23
Method Details:
Experimental Method:
Conformers Calculated:
200
Conformers Submitted:
20
Selection Criteria:
structures with the lowest energy
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Outer membrane protein A
Chain IDs:A
Chain Length:216
Number of Molecules:1
Biological Source:Klebsiella pneumoniae
Ligand Molecules
Primary Citation
Solution state NMR structure and dynamics of KpOmpA, a 210 residue transmembrane domain possessing a high potential for immunological applications.
J.Mol.Biol. 385 117 130 (2009)
PMID: 18952100 DOI: 10.1016/j.jmb.2008.10.021

Abstact

The three-dimensional structure of the outer membrane protein A from Klebsiella pneumoniae transmembrane domain was determined by NMR.This protein induces specific humoral and cytotoxic responses, and is a potent carrier protein. This is one of the largest integral membrane proteins(210 residues) for which nearly complete resonance assignment, including side chains, has been achieved so far. The methodology rested on the use of 900 MHz 3D and 4D TROSY experiments recorded on a uniformly 15N,13C,2H-labeled sample and on a perdeuterated methyl protonated sample. The structure was refined from 920 experimental constraints, giving an ensemble of 20 best structures with an r.m.s. deviation of 0.54 A for the main chain atoms in the core eight-stranded beta-barrel. The protein dynamics was assessed, in a residue-specific manner, by 1H-15N NOEs (pico- to nanosecond timescale), exchange broadening (millisecond to second) and 1H-2H chemical exchange (hour-weeks).

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Primary Citation of related structures