Biological Assembly 1  

 3D View: Structure | Ligand Interaction

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

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 51.21 kDa 
• Atom Count: 3831 
• Residue Count: 474 
• Unique protein chains: 2

1KAP

THREE-DIMENSIONAL STRUCTURE OF THE ALKALINE PROTEASE OF PSEUDOMONAS AERUGINOSA: A TWO-DOMAIN PROTEIN WITH A CALCIUM BINDING PARALLEL BETA ROLL MOTIF

• DOI: 10.2210/pdb1KAP/pdb

• Classification: ZINC METALLOPROTEASE
• Organism(s): Pseudomonas aeruginosa PAO1
• Mutation(s): No 


• Deposited: 1995-06-08 Released: 1995-10-15 
• Deposition Author(s): Baumann, U., Wu, S., Flaherty, K.M., Mckay, D.B.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.64 Å
• R-Value Work: 0.176 
• R-Value Observed: 0.176 

Literature

Three-dimensional structure of the alkaline protease of Pseudomonas aeruginosa: a two-domain protein with a calcium binding parallel beta roll motif.

Baumann, U., Wu, S., Flaherty, K.M., McKay, D.B.

(1993) EMBO J 12: 3357-3364

• PubMed: 8253063 
• Structures With Same Primary Citation


• PubMed Abstract: 
  

The three-dimensional structure of the alkaline protease of Pseudomonas aeruginosa, a zinc metalloprotease, has been solved to a resolution of 1.64 A by multiple isomorphous replacement and non-crystallographic symmetry averaging between different crystal forms. The molecule is elongated with overall dimensions of 90 x 35 x 25 A; it has two distinct structural domains. The N-terminal domain is the proteolytic domain; it has an overall tertiary fold and active site zinc ligation similar to that of astacin, a metalloprotease isolated from a European freshwater crayfish. The C-terminal domain consists of a 21-strand beta sandwich. Within this domain is a novel 'parallel beta roll' structure in which successive beta strands are wound in a right-handed spiral, and in which Ca2+ ions are bound within the turns between strands by a repeated GGXGXD sequence motif, a motif that is found in a diverse group of proteins secreted by Gram-negative bacteria.

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Organizational Affiliation: 

Beckman Laboratories for Structural Biology, Department of Cell Biology, Stanford University School of Medicine, CA 94305.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
ALKALINE PROTEASE	P	479	Pseudomonas aeruginosa PAO1	Mutation(s): 0  Gene Names: aprA, PA1249 EC: 3.4.24 (PDB Primary Data), 3.4.24.40 (UniProt)
Find proteins for Q03023 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)) Explore Q03023  Go to UniProtKB:  Q03023

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details
TETRAPEPTIDE (GLY SER ASN SER)	I	4	Pseudomonas aeruginosa PAO1	Mutation(s): 0

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ZN	P	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N
CA	P	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.64 Å
• R-Value Work: 0.176 
• R-Value Observed: 0.176 
• Space Group: P 6₅

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 106.9	α = 90
b = 106.9	β = 90
c = 97	γ = 120

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
MOSFLM	data reduction
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1995-06-08 
• Released Date: 1995-10-15 
Deposition Author(s): Baumann, U., Wu, S., Flaherty, K.M., Mckay, D.B.

Revision History 

• Version 1.0: 1995-10-15
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Source and taxonomy, Version format compliance