1PPD | pdb_00001ppd

RESTRAINED LEAST-SQUARES REFINEMENT OF THE SULFHYDRYL PROTEASE PAPAIN TO 2.0 ANGSTROMS

• PDB DOI: https://doi.org/10.2210/pdb1PPD/pdb

• Classification: HYDROLASE (SULFHYDRYL PROTEINASE)
• Organism(s): Carica papaya
• Mutation(s): No 


• Deposited: 1984-11-06 Released: 1985-01-02 
• Deposition Author(s): Jansonius, J.N.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Work: 
  0.140 (DCC) 
• R-Value Observed: 
  0.145 (Depositor) 

Literature

Restrained Least-Squares Refinement of the Sulfhydryl Protease Papain to 2.0 Angstroms

Priestle, J.P., Ford, G.C., Glor, M., Mehler, E.L., Smit, J.D.G., Thaller, C., Jansonius, J.N.

(1984) Acta Crystallogr A 40: 17

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: 1,870 
• Modeled Residue Count: 212 
• Deposited Residue Count: 212 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
2-HYDROXYETHYL-THIOPAPAIN	A	212	Carica papaya	Mutation(s): 0  EC: 3.4.22.2
UniProt
Find proteins for P00784 (Carica papaya) Explore P00784  Go to UniProtKB:  P00784

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
BME	B [auth A]	BETA-MERCAPTOETHANOL C2 H6 O S DGVVWUTYPXICAM-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Work:  0.140 (DCC) 
• R-Value Observed: 0.145 (Depositor) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 42.8	α = 90
b = 95.7	β = 90
c = 49.7	γ = 90

Software Package:

Software Name	Purpose
PROLSQ	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 1985-01-02 
Deposition Author(s): Jansonius, J.N.

Revision History  

• Version 1.0: 1985-01-02
  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: 2017-11-29
  Changes: Derived calculations, Other
• Version 1.4: 2025-03-26
  Changes: Data collection, Database references, Derived calculations, Structure summary