Biological Assembly 1

Protein Symmetry: Asymmetric (View in 3D)

Protein Stoichiometry: Monomer

Macromolecule Content

• Unique protein chains: 2

1PAD

Binding of chloromethyl ketone substrate analogues to crystalline papain

• DOI: 10.2210/pdb1pad/pdb
• Entry 1PAD supersedes 2PAP

• Classification: HYDROLASE / HYDROLASE INHIBITOR
• Deposited: 1976-11-01 Released: 1977-04-12
• Deposition author(s): Drenth, J., Kalk, K.H., Swen, H.M.
• Organism: Carica papaya
• Mutation(s): 3

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.8 Å
• R-Value Work:

wwPDB Validation 3D Report Full Report

Literature

Macromolecules

Classification: HYDROLASE / HYDROLASE INHIBITOR

Total Structure Weight: 23886.28

Small Molecules

Biologically Interesting Molecules 1 Unique
ID	Chains	Name	Type/Class	2D Diagram	3D Interactions
PRD_000419	I	Acetyl-L-alanyl-L-alanyl-L-phenylalanyl-L-alanine chloromethyl ketone, AcAAPACK	Peptide-like / Inhibitor		Ligand Explorer

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.8 Å
• R-Value Observed:
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length (Å)	Angle (°)
a = 45.00	α = 90.00
b = 104.30	β = 90.00
c = 50.80	γ = 90.00

Structure Validation

View Full Validation Report or Ramachandran Plots

Entry History

Deposition Data

• Deposited Date: 1976-11-01
• Released Date: 1977-04-12
• Deposition author(s): Drenth, J., Kalk, K.H., Swen, H.M.
• This entry supercedes: 2PAP

Revision History

• Version 1_0: 1977-04-12
  

  Type: Initial release

• Version 1_1: 2008-03-24
  

  Type: Version format compliance

• Version 1_2: 2011-07-13
  

  Type: Advisory, Atomic model, Database references, Derived calculations, Non-polymer description, Structure summary, Version format compliance

• Version 1_3: 2012-12-12
  

  Type: Other

• Version 1_4: 2017-11-29
  

  Type: Derived calculations, Other