26LN | pdb_000026ln

Crystal structure of a new isoform of ribosome inactivating protein from Momordica balsamina at 1.41 A resolution

• PDB DOI: https://doi.org/10.2210/pdb26LN/pdb

• Classification: HYDROLASE
• Organism(s): Momordica balsamina
• Mutation(s): No 


• Deposited: 2026-05-06 Released: 2026-05-20 
• Deposition Author(s): Barik, D., Ahmad, N., Sharma, P., Sharma, S., Singh, T.P.
• Funding Organization(s): Not funded

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.41 Å
• R-Value Free: 
  0.203 (Depositor), 0.211 (DCC) 
• R-Value Work: 
  0.179 (Depositor), 0.187 (DCC) 

Starting Model: experimental

Literature

Crystal structure of a new isoform of ribosome inactivating protein from Momordica balsamina at 1.41 A resolution

Barik, D., Ahmad, N., Sharma, P., Sharma, S., Singh, T.P.

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)

Macromolecule Content 

• Total Structure Weight: 28.08 kDa 
• Atom Count: 2,310 
• Modeled Residue Count: 247 
• Deposited Residue Count: 247 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Ribosome Inactivating Protein	A	247	Momordica balsamina	Mutation(s): 0

Oligosaccharides

Help  

Entity ID: 2
Molecule	Chains	Length	2D Diagram	Glycosylation	D Interactions
alpha-L-fucopyranose-(1-3)-2-acetamido-2-deoxy-beta-D-glucopyranose	B	2		N-Glycosylation

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAG	C [auth A]	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N
GOL	G [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
EDO	D [auth A], E [auth A], F [auth A]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.41 Å
• R-Value Free:  0.203 (Depositor), 0.211 (DCC) 
• R-Value Work:  0.179 (Depositor), 0.187 (DCC) 

Space Group: H 3

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 130.303	α = 90
b = 130.303	β = 90
c = 39.853	γ = 120

Software Package:

Software Name	Purpose
REFMAC	refinement
XDS	data reduction
autoPROC	data scaling
MOLREP	phasing
autoPROC	data processing
Coot	model building

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2026-05-20 
Deposition Author(s): Barik, D., Ahmad, N., Sharma, P., Sharma, S., Singh, T.P.

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Funding Organization	Location	Grant Number
Not funded	India	--

Revision History  

• Version 1.0: 2026-05-20
  Type: Initial release