1L17

HYDROPHOBIC STABILIZATION IN T4 LYSOZYME DETERMINED DIRECTLY BY MULTIPLE SUBSTITUTIONS OF ILE 3

• PDB DOI: https://doi.org/10.2210/pdb1L17/pdb

• Classification: HYDROLASE (O-GLYCOSYL)
• Organism(s): Tequatrovirus T4
• Mutation(s): Yes 


• Deposited: 1989-05-01 Released: 1990-01-15 
• Deposition Author(s): Matsumura, M., Dao-Pin, S., Matthews, B.W.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.70 Å
• R-Value Observed: 0.157 

Literature

Hydrophobic stabilization in T4 lysozyme determined directly by multiple substitutions of Ile 3.

Matsumura, M., Becktel, W.J., Matthews, B.W.

(1988) Nature 334: 406-410

• PubMed: 3405287 
• DOI: https://doi.org/10.1038/334406a0
• Primary Citation of Related Structures:  
  1L17, 1L18


• PubMed Abstract: 
  

  Replacing the isoleucine at amino-acid position three of bacteriophage T4 lysozyme causes changes in the thermodynamic stability of the protein that are directly related to the hydrophobicity of the substituted residue. Structural analysis confirms that the hydrophobic stabilization is proportional to the reduction of the surface area accessible to solvent on folding.

---

Organizational Affiliation: 

Institute of Molecular Biology, University of Oregon, Eugene 97403.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 18.65 kDa 
• Atom Count: 1,460 
• Modelled Residue Count: 164 
• Deposited Residue Count: 164 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
T4 LYSOZYME	A	164	Tequatrovirus T4	Mutation(s): 1  EC: 3.2.1.17
UniProt
Find proteins for P00720 (Enterobacteria phage T4) Explore P00720  Go to UniProtKB:  P00720

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.70 Å
• R-Value Observed: 0.157 
• Space Group: P 3₂ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 61.1	α = 90
b = 61.1	β = 90
c = 96.5	γ = 120

Software Package:

Software Name	Purpose
TNT	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 1990-01-15 
Deposition Author(s): Matsumura, M., Dao-Pin, S., Matthews, B.W.

Revision History  

• Version 1.0: 1990-01-15
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Advisory, Version format compliance
• Version 1.3: 2017-11-29
  Changes: Derived calculations, Other
• Version 2.0: 2022-11-23
  Type: Remediation
  Changes: Advisory, Atomic model, Data collection, Database references, Other, Source and taxonomy
• Version 2.1: 2024-05-22
  Changes: Data collection