Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 18790.08 
• Atom Count: 1297 
• Residue Count: 164 
• Unique protein chains: 1

147L

ROLE OF BACKBONE FLEXIBILITY IN THE ACCOMMODATION OF VARIANTS THAT REPACK THE CORE OF T4 LYSOZYME

• DOI: 10.2210/pdb147L/pdb

• Classification: HYDROLASE(O-GLYCOSYL)
• Organism(s): Enterobacteria phage T4


• Deposited: 1993-10-15 Released: 1994-01-31 
• Deposition Author(s): Baldwin, E., Matthews, B.W.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2 Å

Literature

The role of backbone flexibility in the accommodation of variants that repack the core of T4 lysozyme.

Baldwin, E.P., Hajiseyedjavadi, O., Baase, W.A., Matthews, B.W.

(1993) Science 262: 1715-1718

• PubMed: 8259514 
• Primary Citation of Related Structures:  
  146L, 145L, 144L, 143L, 142L, 141L, 140L


• PubMed Abstract: 
  

To understand better how the packing of side chains within the core influences protein structure and stability, the crystal structures were determined for eight variants of T4 lysozyme, each of which contains three to five substitutions at adjacent interior sites. Concerted main-chain and side-chain displacements, with movements of helical segments as large as 0.8 angstrom, were observed. In contrast, the angular conformations of the mutated side chains tended to remain unchanged, with torsion angles within 20 degrees of those in the wild-type structure. These observations suggest that not only the rotation of side chains but also movements of the main chain must be considered in the evaluation of which amino acid sequences are compatible with a given protein fold.

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Related Citations: 

• Construction and Functional Selection of a T4 Lysozyme Gene Library Randomly Mutagenized at Five Specific Sites
  Baldwin, E.,Xu, J.,Hajiseyedjavadi, O.
  (1993) Techniques in Protein Chemistry Iv --: 499
• Structure of Bacteriophage T4 Lysozyme Refined at 1.7 Angstroms Resolution
  Weaver, L.H.,Matthews, B.W.
  (1987) J.Mol.Biol. 193: 189
• Control of Enzyme Activity by an Engineered Disulfide Bond
  Matsumura, M.,Matthews, B.W.
  (1989) Science 243: 792




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Organizational Affiliation: 

Institute of Molecular Biology, Howard Hughes Medical Institute, University of Oregon, Eugene 97403.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
T4 LYSOZYME	A	164	Enterobacteria phage T4	Mutation(s): 0  Gene Names: E EC: 3.2.1.17
Find proteins for P00720 (Enterobacteria phage T4) Go to UniProtKB:  P00720

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
CL	A	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M
BME	A	BETA-MERCAPTOETHANOL C2 H6 O S DGVVWUTYPXICAM-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2 Å
• Space Group: P 3₂ 2 1

Unit Cell:

Length (Å)	Angle (°)
a = 61.200	α = 90.00
b = 61.200	β = 90.00
c = 95.700	γ = 120.00

Software Package:

Software Name	Purpose
TNT	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1993-10-15 
• Released Date: 1994-01-31 
• Deposition Author(s): Baldwin, E., Matthews, B.W.

Revision History 

• Version 1.0: 1994-01-31
  Type: Initial release
• Version 1.1: 2008-03-24
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance
• Version 1.3: 2017-11-29
  Type: Derived calculations, Other