3MON

CRYSTAL STRUCTURES OF TWO INTENSELY SWEET PROTEINS

• PDB DOI: https://doi.org/10.2210/pdb3MON/pdb
• Entry: 3MON supersedes: 1MON

• Classification: SWEET-TASTING PROTEIN
• Organism(s): Dioscoreophyllum cumminsii
• Mutation(s): No 


• Deposited: 1992-08-26 Released: 1993-10-31 
• Deposition Author(s): Jiang, F., Tong, L., Kim, S.-H.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.80 Å
• R-Value Work: 0.193 

Literature

Crystal structures of two intensely sweet proteins.

Kim, S.H., de Vos, A., Ogata, C.

(1988) Trends Biochem Sci 13: 13-15

• PubMed: 3072690 
• DOI: https://doi.org/10.1016/0968-0004(88)90011-4
• Primary Citation of Related Structures:  
  1THI, 3MON

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

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

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 2 assigned by authors and generated by PISA (software)

Biological Assembly 3  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 3 assigned by authors and generated by PISA (software)

Biological Assembly 4  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 4 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 44.41 kDa 
• Atom Count: 3,136 
• Modelled Residue Count: 376 
• Deposited Residue Count: 376 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
MONELLIN	A, C, E, G	44	Dioscoreophyllum cumminsii	Mutation(s): 0
UniProt
Find proteins for P02881 (Dioscoreophyllum cumminsii) Explore P02881  Go to UniProtKB:  P02881

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
MONELLIN	B, D, F, H	50	Dioscoreophyllum cumminsii	Mutation(s): 0
UniProt
Find proteins for P02882 (Dioscoreophyllum cumminsii) Explore P02882  Go to UniProtKB:  P02882

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.80 Å
• R-Value Work: 0.193 
• Space Group: P 1 1 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 39.84	α = 90
b = 87.2	β = 90
c = 72.06	γ = 107.3

Software Package:

Software Name	Purpose
X-PLOR	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 1993-10-31 
Deposition Author(s): Jiang, F., Tong, L., Kim, S.-H.
• This entry supersedes: 1MON

Revision History  

• Version 1.0: 1993-10-31
  Type: Initial release
  
• Version 1.1: 2008-03-25
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2024-02-21
  Changes: Data collection, Database references, Other