1V6C

Crystal Structure of Psychrophilic Subtilisin-like Protease Apa1 from Antarctic Psychrotroph Pseudoalteromonas sp. AS-11

• PDB DOI: https://doi.org/10.2210/pdb1V6C/pdb

• Classification: HYDROLASE
• Organism(s): Pseudoalteromonas sp. AS-11
• Mutation(s): No 


• Deposited: 2003-11-28 Released: 2004-12-28 
• Deposition Author(s): Dong, D., Ihara, T., Motoshima, H., Watanabe, K.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.215 
• R-Value Work: 0.196 
• R-Value Observed: 0.196 

Starting Model: experimental

Literature

Crystal Structure of Psychrophilic Subtilisin-like Protease Apa1 from Antarctic Psychrotroph Pseudoalteromonas sp. AS-11

Dong, D., Ihara, T., Motoshima, H., Watanabe, K.

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)

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors.

Biological Assembly 3  

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

Biological assembly 3 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 91.12 kDa 
• Atom Count: 6,763 
• Modelled Residue Count: 871 
• Deposited Residue Count: 882 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
alkaline serine protease	A, B	441	Pseudoalteromonas sp. AS-11	Mutation(s): 0  EC: 3.4.21
UniProt
Find proteins for Q65Z69 (Pseudoalteromonas sp. AS-11) Explore Q65Z69  Go to UniProtKB:  Q65Z69

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
PMS	G [auth A], M [auth B]	phenylmethanesulfonic acid C7 H8 O3 S NIXKBAZVOQAHGC-UHFFFAOYSA-N
SO4	F [auth A], L [auth B]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
CA	C [auth A], D [auth A], E [auth A], H [auth B], I [auth B], J [auth B], K [auth B]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.215 
• R-Value Work: 0.196 
• R-Value Observed: 0.196 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 122.942	α = 90
b = 138.476	β = 97.48
c = 64.772	γ = 90

Software Package:

Software Name	Purpose
CNS	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
CNS	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2004-12-28 
Deposition Author(s): Dong, D., Ihara, T., Motoshima, H., Watanabe, K.

Revision History  

• Version 1.0: 2004-12-28
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Source and taxonomy, Version format compliance
• Version 1.3: 2023-10-25
  Changes: Data collection, Database references, Derived calculations, Refinement description
• Version 1.4: 2024-10-23
  Changes: Structure summary