4MNJ | pdb_00004mnj

Crystal Structure of GH18 Chitinase from Cycad, Cycas revoluta

• PDB DOI: https://doi.org/10.2210/pdb4MNJ/pdb

• Classification: HYDROLASE
• Organism(s): Cycas revoluta
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2013-09-11 Released: 2014-10-22 
• Deposition Author(s): Umemoto, N., Numata, T., Ohnuma, T., Osawa, T., Taira, T., Fukamizo, T.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.58 Å
• R-Value Free: 
  0.202 (Depositor), 0.205 (DCC) 
• R-Value Work: 
  0.185 (Depositor), 0.186 (DCC) 
• R-Value Observed: 
  0.185 (Depositor) 

Starting Model: experimental

Literature

Crystal Structure of GH18 Chitinase from Cycad, Cycas revoluta

Umemoto, N., Numata, T., Ohnuma, T., Osawa, T., Taira, T., Fukamizo, T.

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: 38.78 kDa 
• Atom Count: 2,878 
• Modeled Residue Count: 342 
• Deposited Residue Count: 348 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Chitinase A	A	348	Cycas revoluta	Mutation(s): 0  Gene Names: crchiA EC: 3.2.1.14
UniProt
Find proteins for Q4W6L6 (Cycas revoluta) Explore Q4W6L6  Go to UniProtKB:  Q4W6L6

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ACT	B [auth A], C [auth A], D [auth A]	ACETATE ION C2 H3 O2 QTBSBXVTEAMEQO-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.58 Å
• R-Value Free:  0.202 (Depositor), 0.205 (DCC) 
• R-Value Work:  0.185 (Depositor), 0.186 (DCC) 
• R-Value Observed: 0.185 (Depositor) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 57.489	α = 90
b = 63.94	β = 90
c = 85.591	γ = 90

Software Package:

Software Name	Purpose
HKL-2000	data collection
MOLREP	phasing
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2014-10-22 
Deposition Author(s): Umemoto, N., Numata, T., Ohnuma, T., Osawa, T., Taira, T., Fukamizo, T.

Revision History  

• Version 1.0: 2014-10-22
  Type: Initial release
  
• Version 1.1: 2023-11-08
  Changes: Data collection, Database references, Derived calculations, Refinement description