7ZU8 | pdb_00007zu8

Crystal Structure of the zymogen form of the glutamic-class prolyl-endopeptidase neprosin at 2.05 A resolution in presence of the crystallophore Lu-Xo4.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 
    0.250 (Depositor), 0.240 (DCC) 
  • R-Value Work: 
    0.209 (Depositor), 0.200 (DCC) 
  • R-Value Observed: 
    0.210 (Depositor) 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 

Created with Raphaël 2.3.0Worse 01 BetterLigand structure goodness of fit to experimental dataBest fitted K93Click on this verticalbar to view details

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Literature

Molecular and in vivo studies of a glutamate-class prolyl-endopeptidase for coeliac disease therapy.

Del Amo-Maestro, L.Mendes, S.R.Rodriguez-Banqueri, A.Garzon-Flores, L.Girbal, M.Rodriguez-Lagunas, M.J.Guevara, T.Franch, A.Perez-Cano, F.J.Eckhard, U.Gomis-Ruth, F.X.

(2022) Nat Commun 13: 4446-4446

  • DOI: https://doi.org/10.1038/s41467-022-32215-1
  • Primary Citation of Related Structures:  
    7ZU8, 7ZVA, 7ZVB, 7ZVC

  • PubMed Abstract: 

    The digestion of gluten generates toxic peptides, among which a highly immunogenic proline-rich 33-mer from wheat α-gliadin, that trigger coeliac disease. Neprosin from the pitcher plant is a reported prolyl endopeptidase. Here, we produce recombinant neprosin and its mutants, and find that full-length neprosin is a zymogen, which is self-activated at gastric pH by the release of an all-β pro-domain via a pH-switch mechanism featuring a lysine plug. The catalytic domain is an atypical 7+8-stranded β-sandwich with an extended active-site cleft containing an unprecedented pair of catalytic glutamates. Neprosin efficiently degrades both gliadin and the 33-mer in vitro under gastric conditions and is reversibly inactivated at pH > 5. Moreover, co-administration of gliadin and the neprosin zymogen at the ratio 500:1 reduces the abundance of the 33-mer in the small intestine of mice by up to 90%. Neprosin therefore founds a family of eukaryotic glutamate endopeptidases that fulfils requisites for a therapeutic glutenase.


  • Organizational Affiliation

    Proteolysis Laboratory; Department of Structural Biology, Molecular Biology Institute of Barcelona (CSIC), Barcelona Science Park; c/Baldiri Reixac, 15-21, 08028, Barcelona, Catalonia, Spain.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Glutamyl endopeptidase Neprosin389Nepenthes ventricosa x Nepenthes alataMutation(s): 0 
Gene Names: NvNpr
EC: 3.4.21.19
UniProt
Find proteins for A0A1L7NZU4 (Nepenthes alata)
Explore A0A1L7NZU4 
Go to UniProtKB:  A0A1L7NZU4
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A1L7NZU4
Glycosylation
Glycosylation Sites: 2
Sequence Annotations
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  • Reference Sequence
Oligosaccharides

Help

Entity ID: 2
MoleculeChains Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose
B
3N-Glycosylation
Glycosylation Resources
GlyTouCan:  G21290RB
GlyCosmos:  G21290RB
GlyGen:  G21290RB
Entity ID: 3
MoleculeChains Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
C
2N-Glycosylation
Glycosylation Resources
GlyTouCan:  G42666HT
GlyCosmos:  G42666HT
GlyGen:  G42666HT
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
K93
Query on K93

Download Ideal Coordinates CCD File 
D [auth A],
F [auth A]
12-oxidanyl-9,11$l^{3}-dioxa-1$l^{4},19$l^{4},22,27$l^{4},28$l^{4}-pentaza-10$l^{6}-lutetaoctacyclo[17.5.2.1^{3,7}.1^{10,13}.0^{1,10}.0^{10,19}.0^{10,28}.0^{17,27}]octacosa-3,5,7(28),11,13,15,17(27)-heptaen-8-one
C20 H24 Lu N5 O4
ZJNYWMGNALTZQP-UHFFFAOYSA-M
ACT
Query on ACT

Download Ideal Coordinates CCD File 
E [auth A],
G [auth A]
ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free:  0.250 (Depositor), 0.240 (DCC) 
  • R-Value Work:  0.209 (Depositor), 0.200 (DCC) 
  • R-Value Observed: 0.210 (Depositor) 
Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 86.65α = 90
b = 93.35β = 90
c = 48.69γ = 90
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
XDSdata reduction
XSCALEdata scaling
AutoSolphasing
BUSTERrefinement
Cootmodel building

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 

Created with Raphaël 2.3.0Worse 01 BetterLigand structure goodness of fit to experimental dataBest fitted K93Click on this verticalbar to view details

Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Not funded--

Revision History  (Full details and data files)

  • Version 1.0: 2022-08-10
    Type: Initial release
  • Version 1.1: 2024-11-13
    Changes: Data collection, Structure summary