3IAN | pdb_00003ian

Crystal structure of a chitinase from Lactococcus lactis subsp. lactis

• PDB DOI: https://doi.org/10.2210/pdb3IAN/pdb

• Classification: HYDROLASE
• Organism(s): Lactococcus lactis subsp. lactis
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 


• Deposited: 2009-07-14 Released: 2009-07-28 
• Deposition Author(s): Bonanno, J.B., Rutter, M., Bain, K.T., Miller, S., Ozyurt, S., Sauder, J.M., Burley, S.K., Almo, S.C., New York SGX Research Center for Structural Genomics (NYSGXRC)

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.75 Å
• R-Value Free: 
  0.192 (Depositor), 0.196 (DCC) 
• R-Value Work: 
  0.169 (Depositor), 0.175 (DCC) 
• R-Value Observed: 
  0.170 (Depositor) 

Literature

Crystal structure of a chitinase from Lactococcus lactis subsp. lactis

Bonanno, J.B., Rutter, M., Bain, K.T., Miller, S., Ozyurt, S., Sauder, J.M., Burley, S.K., Almo, S.C.

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: 36.56 kDa 
• Atom Count: 2,870 
• Modeled Residue Count: 319 
• Deposited Residue Count: 321 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Chitinase	A	321	Lactococcus lactis subsp. lactis	Mutation(s): 2  Gene Names: chiA, L996, L9964, LL1950 EC: 3.2.1.14
UniProt
Find proteins for Q9CE95 (Lactococcus lactis subsp. lactis (strain IL1403)) Explore Q9CE95  Go to UniProtKB:  Q9CE95

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
EDO	C [auth A], D [auth A], E [auth A], F [auth A], G [auth A], H [auth A], I [auth A], J [auth A], K [auth A], L [auth A]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N
NA	B [auth A]	SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.75 Å
• R-Value Free:  0.192 (Depositor), 0.196 (DCC) 
• R-Value Work:  0.169 (Depositor), 0.175 (DCC) 
• R-Value Observed: 0.170 (Depositor) 

Space Group: P 4₃ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 74.771	α = 90
b = 74.771	β = 90
c = 156.196	γ = 90

Software Package:

Software Name	Purpose
SCALA	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
MAR345	data collection
MOSFLM	data reduction
SHELXCD	phasing
SHELXE	model building

Structure Validation

Entry History 

Deposition Data

• Released Date: 2009-07-28 
Deposition Author(s): Bonanno, J.B., Rutter, M., Bain, K.T., Miller, S., Ozyurt, S., Sauder, J.M., Burley, S.K., Almo, S.C., New York SGX Research Center for Structural Genomics (NYSGXRC)

Revision History  

• Version 1.0: 2009-07-28
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2017-11-01
  Changes: Refinement description
• Version 1.3: 2018-11-21
  Changes: Data collection, Structure summary
• Version 1.4: 2021-02-10
  Changes: Database references, Derived calculations, Structure summary
• Version 1.5: 2021-10-13
  Changes: Database references
• Version 1.6: 2024-02-21
  Changes: Data collection