8J3G | pdb_00008j3g

Crystal structure of apo (S)-norcoclaurine 6-O-methyltransferase from Coptis chinensis

• PDB DOI: https://doi.org/10.2210/pdb8J3G/pdb

• Classification: BIOSYNTHETIC PROTEIN
• Organism(s): Coptis chinensis
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2023-04-16 Released: 2024-10-23 
• Deposition Author(s): Li, X.H., Su, D., Zhang, C.H.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 
  0.231 (Depositor), 0.235 (DCC) 
• R-Value Work: 
  0.193 (Depositor), 0.200 (DCC) 
• R-Value Observed: 
  0.195 (Depositor) 

Starting Model: experimental

Literature

Crystal structure of apo (S)-norcoclaurine 6-O-methyltransferase from Coptis chinensis

Li, X.H., Su, D., Zhang, C.H.

To be published.

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

Biological Assembly 2  

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

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

Macromolecule Content 

• Total Structure Weight: 38.77 kDa 
• Atom Count: 2,532 
• Modeled Residue Count: 314 
• Deposited Residue Count: 347 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
6-O-methyltransferase 2 (Fragment)	A	347	Coptis chinensis	Mutation(s): 0  Gene Names: 6OMT2
UniProt
Find proteins for A0A835HXA6 (Coptis chinensis) Explore A0A835HXA6  Go to UniProtKB:  A0A835HXA6

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free:  0.231 (Depositor), 0.235 (DCC) 
• R-Value Work:  0.193 (Depositor), 0.200 (DCC) 
• R-Value Observed: 0.195 (Depositor) 

Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 76.479	α = 90
b = 103.935	β = 90
c = 101.423	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
HKL-3000	data reduction
HKL-3000	data scaling

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2024-10-23 
Deposition Author(s): Li, X.H., Su, D., Zhang, C.H.

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Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	2017YFA0505903

Revision History  

• Version 1.0: 2024-10-23
  Type: Initial release