1PPO

DETERMINATION OF THE STRUCTURE OF PAPAYA PROTEASE OMEGA

• PDB DOI: https://doi.org/10.2210/pdb1PPO/pdb

• Classification: HYDROLASE(THIOL PROTEASE)
• Organism(s): Carica papaya
• Mutation(s): No 


• Deposited: 1991-07-12 Released: 1993-10-31 
• Deposition Author(s): Pickersgill, R.W., Rizkallah, P.J., Harris, G.W., Goodenough, P.W.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Observed: 0.155 

Literature

Determination of the Structure of Papaya Protease Omega

Pickersgill, R.W., Rizkallah, P.J., Harris, G.W., Goodenough, P.W.

(1991) Acta Crystallogr B 47: 766-771

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 23.53 kDa 
• Atom Count: 1,775 
• Modelled Residue Count: 216 
• Deposited Residue Count: 216 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
PROTEASE OMEGA	A	216	Carica papaya	Mutation(s): 0  EC: 3.4.22.30
UniProt
Find proteins for P10056 (Carica papaya) Explore P10056  Go to UniProtKB:  P10056

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
HG	B [auth A]	MERCURY (II) ION Hg BQPIGGFYSBELGY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Observed: 0.155 
• Space Group: P 3₁ 1 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 74.11	α = 90
b = 74.11	β = 90
c = 77.81	γ = 120

Software Package:

Software Name	Purpose
RESTRAIN	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 1993-10-31 
Deposition Author(s): Pickersgill, R.W., Rizkallah, P.J., Harris, G.W., Goodenough, P.W.

Revision History  

• Version 1.0: 1993-10-31
  Type: Initial release
  
• Version 1.1: 2008-03-03
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2015-11-25
  Changes: Database references, Structure summary
• Version 1.4: 2017-11-29
  Changes: Derived calculations, Other
• Version 1.5: 2024-10-30
  Changes: Data collection, Database references, Derived calculations, Structure summary