8XE3

norbelladine 4'-O-methyltransferase complexed with Mg and SAH

• PDB DOI: https://doi.org/10.2210/pdb8XE3/pdb

• Classification: TRANSFERASE
• Organism(s): Narcissus aff. pseudonarcissus MK-2014
• Expression System: Escherichia coli M15
• Mutation(s): No 


• Deposited: 2023-12-11 Released: 2024-08-07 
• Deposition Author(s): Saw, Y.Y.H., Nakashima, Y., Morita, H.
• Funding Organization(s): Japan Society for the Promotion of Science (JSPS)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.72 Å
• R-Value Free: 0.199 
• R-Value Work: 0.160 
• R-Value Observed: 0.162 

Starting Model: experimental

Literature

Structure-Based Catalytic Mechanism of Amaryllidaceae O-Methyltransferases

Hnin, S.Y.Y., Nakashima, Y., Kodama, T., Morita, H.

(2024) ACS Catal : 11865-11880

• DOI: https://doi.org/10.1021/acscatal.4c03305

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

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

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 55.89 kDa 
• Atom Count: 4,397 
• Modelled Residue Count: 479 
• Deposited Residue Count: 484 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Norbelladine 4'-O-methyltransferase	A, B	242	Narcissus aff. pseudonarcissus MK-2014	Mutation(s): 0  Gene Names: N4OMT
UniProt
Find proteins for A0A077EWA5 (Narcissus aff. pseudonarcissus MK-2014) Explore A0A077EWA5  Go to UniProtKB:  A0A077EWA5

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SAH (Subject of Investigation/LOI)	F [auth A], I [auth B]	S-ADENOSYL-L-HOMOCYSTEINE C14 H20 N6 O5 S ZJUKTBDSGOFHSH-WFMPWKQPSA-N
GOL (Subject of Investigation/LOI)	C [auth A], D [auth A], G [auth B]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
MG (Subject of Investigation/LOI)	E [auth A], H [auth B]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.72 Å
• R-Value Free: 0.199 
• R-Value Work: 0.160 
• R-Value Observed: 0.162 
• Space Group: P 2 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 49.548	α = 90
b = 80.096	β = 90
c = 115.771	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
XDS	data reduction
Aimless	data scaling
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2024-08-07 
Deposition Author(s): Saw, Y.Y.H., Nakashima, Y., Morita, H.

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Funding Organization	Location	Grant Number
Japan Society for the Promotion of Science (JSPS)	Japan	JP22H02777
Japan Society for the Promotion of Science (JSPS)	Japan	JP22K15303

Revision History  

• Version 1.0: 2024-08-07
  Type: Initial release