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Entry Detail
PDB ID:
6GID
Keywords:
Title:
High resolution crystal structure of substrate-free human neprilysin
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2018-05-10
Release Date:
2018-06-27
Method Details:
Experimental Method:
Resolution:
1.90 Å
R-Value Free:
0.23
R-Value Work:
0.18
R-Value Observed:
0.19
Space Group:
P 32 2 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Neprilysin
Chain IDs:A
Chain Length:696
Number of Molecules:1
Biological Source:Homo sapiens
Primary Citation
High resolution crystal structure of substrate-free human neprilysin.
J. Struct. Biol. 204 19 25 (2018)
PMID: 29906506 DOI: 10.1016/j.jsb.2018.06.004

Abstact

Neprilysin is a transmembrane M13 zinc metalloprotease responsible for the degradation of several biologically active peptides including insulin, enkephalin, substance P, bradykinin, endothelin-1, neurotensin and amyloid-β. The protein has received attention for its role in modulating blood pressure responses with its inhibition producing an antihypertensive response. To date, several inhibitor bound crystal structures of the human neprilysin extracellular domain have been determined, but, a structure free of bound inhibitor or substrate has yet to be reported. Here, we report the first crystal structure free of substrate or inhibitor for the extracellular catalytic domain of human neprilysin at 1.9 Å resolution. This structure will provide a reference point for comparisons to future inhibitor or substrate bound structures. The neprilysin structure also reveals that a closed protein conformation can be adopted in protein crystals absent of bound substrate or inhibitor.

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