7EUA | pdb_00007eua

X-ray crystal structure of a Monellin deletion construct carrying the P93A mutation

• PDB DOI: https://doi.org/10.2210/pdb7EUA/pdb

• Classification: PLANT PROTEIN
• Organism(s): Dioscoreophyllum cumminsii
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2021-05-16 Released: 2021-08-11 
• Deposition Author(s): Manjula, R., Bhatia, S., Jayant, B., Ramaswamy, S., Gosavi, S.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.43 Å
• R-Value Free: 
  0.250 (Depositor), 0.241 (DCC) 
• R-Value Work: 
  0.205 (Depositor), 0.209 (DCC) 
• R-Value Observed: 
  0.207 (Depositor) 

Starting Model: experimental

Literature

X-ray crystal structure of a Monellin deletion construct carrying the P93A mutation

Manjula, R., Ramaswamy, S., Gosavi, S.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly Evidence: gel filtration

Macromolecule Content 

• Total Structure Weight: 11.6 kDa 
• Atom Count: 766 
• Modeled Residue Count: 91 
• Deposited Residue Count: 97 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Monellin	A	97	Dioscoreophyllum cumminsii	Mutation(s): 0
UniProt
Find proteins for P02881 (Dioscoreophyllum cumminsii) Explore P02881  Go to UniProtKB:  P02881
Find proteins for P02882 (Dioscoreophyllum cumminsii) Explore P02882  Go to UniProtKB:  P02882
UniProt Groups	P02881P02882

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4 (Subject of Investigation/LOI)	B [auth A], C [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.43 Å
• R-Value Free:  0.250 (Depositor), 0.241 (DCC) 
• R-Value Work:  0.205 (Depositor), 0.209 (DCC) 
• R-Value Observed: 0.207 (Depositor) 

Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 26.741	α = 90
b = 64.94	β = 109.07
c = 26.741	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
Aimless	data scaling
PDB_EXTRACT	data extraction
MOSFLM	data reduction
PHENIX	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2021-08-11 
Deposition Author(s): Manjula, R., Bhatia, S., Jayant, B., Ramaswamy, S., Gosavi, S.

Revision History  

• Version 1.0: 2021-08-11
  Type: Initial release
  
• Version 1.1: 2023-11-29
  Changes: Data collection, Refinement description
• Version 2.0: 2025-08-27
  Type: Coordinate replacement
  Reason: Sequence discrepancy
  Changes: Advisory, Atomic model, Data collection, Database references, Derived calculations, Refinement description, Structure summary