4FKC image
Entry Detail
PDB ID:
4FKC
Keywords:
Title:
Recombinant prolidase from Thermococcus sibiricus
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2012-06-13
Release Date:
2012-11-07
Method Details:
Experimental Method:
Resolution:
2.60 Å
R-Value Free:
0.26
R-Value Work:
0.23
R-Value Observed:
0.23
Space Group:
P 41 21 2
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Xaa-Pro aminopeptidase
Chain IDs:A
Chain Length:377
Number of Molecules:1
Biological Source:Thermococcus sibiricus
Ligand Molecules
Primary Citation
Influence of intermolecular contacts on the structure of recombinant prolidase from Thermococcus sibiricus.
Acta Crystallogr.,Sect.F 68 1275 1278 (2012)
PMID: 23143231 DOI: 10.1107/S174430911203761X

Abstact

Prolidases are peptidases that are specific for dipeptides with proline as the second residue. The structure of recombinant prolidase from the hyperthermophilic archaeon Thermococcus sibiricus (Tsprol) was determined at 2.6 Å resolution. The homodimer of Tsprol is characterized by a complete lack of interactions between the N- and C-terminal domains of the two subunits and hence can be considered to be the most open structure when compared with previously structurally studied prolidases. This structure exists owing to intermolecular coordination bonds between cadmium ions derived from the crystallization solution and histidine residues of a His tag and aspartate and glutamate residues, which link the dimers to each other. This linking leads to the formation of a crystal with a loose packing of protein molecules and low resistance to mechanical influence and temperature increase.

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Primary Citation of related structures