ISDA

Entry Detail

PDB ID:

4NY6

Keywords:

ANTIFREEZE PROTEIN

Title:

Neutron structure of leucine and valine methyl protonated type III antifreeze

Biological Source:

Source Organism:

Zoarces americanus

Host Organism:

Escherichia coli

PDB Version:

Deposition Date:

2013-12-10

Release Date:

2014-12-24

Method Details:

Experimental Method:

NEUTRON DIFFRACTION, X-RAY DIFFRACTION

R-Value Free:

['0.18

R-Value Work:

['0.17

R-Value Observed:

['0.17

Space Group:

P 21 21 21

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:Type-3 ice-structuring protein HPLC 12
Chain IDs:A
Chain Length:65
Number of Molecules:1
Biological Source:Zoarces americanus

UniProt ID:P19614

Ligand Molecules

DOD

Primary Citation

Perdeuteration: improved visualization of solvent structure in neutron macromolecular crystallography.

Fisher, S.J, Blakeley, M.P, Howard, E.I, Petit-Haertlein, I, Haertlein, M, Mitschler, A, Cousido-Siah, A, Salvay, A.G, Popov, A, Muller-Dieckmann, C, Petrova, T, Podjarny, A.Show

Acta Crystallogr.,Sect.D 70 3266 3272 (2014)

PMID: 25478844 DOI: 10.1107/S1399004714021610

Abstact

The 1.8 Å resolution neutron structure of deuterated type III antifreeze protein in which the methyl groups of leucine and valine residues are selectively protonated is presented. Comparison between this and the 1.85 Å resolution neutron structure of perdeuterated type III antifreeze protein indicates that perdeuteration improves the visibility of solvent molecules located in close vicinity to hydrophobic residues, as cancellation effects between H atoms of the methyl groups and nearby heavy-water molecules (D2O) are avoided.

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Primary Citation of related structures