9FBS | pdb_00009fbs

Deletion mutant of chitinase MmChi60

• PDB DOI: https://doi.org/10.2210/pdb9FBS/pdb

• Classification: HYDROLASE
• Organism(s): Moritella marina
• Expression System: Escherichia coli 'BL21-Gold(DE3)pLysS AG
• Mutation(s): No 


• Deposited: 2024-05-14 Released: 2025-05-28 
• Deposition Author(s): Bejger, M., Rypniewski, W.
• Funding Organization(s): Polish National Science Centre

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.35 Å
• R-Value Free: 
  0.266 (Depositor), 0.274 (DCC) 
• R-Value Work: 
  0.186 (Depositor), 0.198 (DCC) 

Starting Model: experimental

Literature

Probing the structure and thermodynamics of a psychrophilic chitinase

Bejger, M., Malecki, P.H., Rypniewski, W.

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: 36.18 kDa 
• Atom Count: 2,629 
• Modeled Residue Count: 323 
• Deposited Residue Count: 323 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Chitinase 60	A	323	Moritella marina	Mutation(s): 0  Gene Names: chi60 EC: 3.2.1.14
UniProt
Find proteins for B1VBB0 (Moritella marina) Explore B1VBB0  Go to UniProtKB:  B1VBB0

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CA (Subject of Investigation/LOI)	C [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N
NA (Subject of Investigation/LOI)	B [auth A]	SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.35 Å
• R-Value Free:  0.266 (Depositor), 0.274 (DCC) 
• R-Value Work:  0.186 (Depositor), 0.198 (DCC) 

Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 50.764	α = 90
b = 74.009	β = 90
c = 172.538	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
XDS	data reduction
XDS	data scaling
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-05-28 
Deposition Author(s): Bejger, M., Rypniewski, W.

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Funding Organization	Location	Grant Number
Polish National Science Centre	Poland	UMO-2017/27/B/NZ1/02201

Revision History  

• Version 1.0: 2025-05-28
  Type: Initial release