2E3W

X-ray structure of native RNase A

• PDB DOI: https://doi.org/10.2210/pdb2E3W/pdb

• Classification: HYDROLASE
• Organism(s): Bos taurus
• Mutation(s): No 


• Deposited: 2006-11-30 Released: 2007-10-30 
• Deposition Author(s): Boerema, D.J., Tereshko, V.A., Kent, S.B.H.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.05 Å
• R-Value Free: 0.208 
• R-Value Work: 0.193 
• R-Value Observed: 0.193 

Starting Model: experimental

Literature

Total synthesis by modern chemical ligation methods and high resolution (1.1 A) X-ray structure of ribonuclease A

Boerema, D.J., Tereshko, V.A., Kent, S.B.

(2008) Biopolymers 90: 278-286

• PubMed: 17610259 
• DOI: https://doi.org/10.1002/bip.20800
• Primary Citation of Related Structures:  
  2E3W, 2NUI


• PubMed Abstract: 
  

  The total chemical synthesis of RNase A using modern chemical ligation methods is described, illustrating the significant advances that have been made in chemical protein synthesis since Gutte and Merrifield's pioneering preparation of RNase A in 1969. The identity of the synthetic product was confirmed through rigorous characterization, including the determination of the X-ray crystal structure to 1.1 Angstrom resolution.

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Organizational Affiliation: 

Department of Biochemistry and Molecular Biology, Gordon Center for Integrative Science, The University of Chicago, Chicago, IL 60637, USA.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 13.81 kDa 
• Atom Count: 1,169 
• Modelled Residue Count: 124 
• Deposited Residue Count: 124 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Ribonuclease pancreatic	A	124	Bos taurus	Mutation(s): 0  EC: 3.1.27.5 (PDB Primary Data), 4.6.1.18 (UniProt)
UniProt
Find proteins for P61823 (Bos taurus) Explore P61823  Go to UniProtKB:  P61823

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CL	B [auth A], C [auth A], D [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.05 Å
• R-Value Free: 0.208 
• R-Value Work: 0.193 
• R-Value Observed: 0.193 
• Space Group: P 3₂ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 64.167	α = 90
b = 64.167	β = 90
c = 63.626	γ = 120

Software Package:

Software Name	Purpose
REFMAC	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 2007-10-30 
Deposition Author(s): Boerema, D.J., Tereshko, V.A., Kent, S.B.H.

Revision History  

• Version 1.0: 2007-10-30
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2023-08-23
  Changes: Data collection, Database references, Derived calculations, Refinement description
• Version 1.3: 2024-10-09
  Changes: Structure summary