1QR4 | pdb_00001qr4

TWO FIBRONECTIN TYPE-III DOMAIN SEGMENT FROM CHICKEN TENASCIN

• PDB DOI: https://doi.org/10.2210/pdb1QR4/pdb

• Classification: STRUCTURAL PROTEIN
• Organism(s): Gallus gallus
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 1999-06-17 Released: 1999-06-28 
• Deposition Author(s): Piontek, K., Bisig, D.A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.55 Å
• R-Value Free: 
  0.292 (Depositor) 
• R-Value Work: 
  0.209 (Depositor), 0.220 (DCC) 
• R-Value Observed: 
  0.209 (Depositor) 

Starting Model: experimental

Literature

Purification, crystallization and preliminary crystallographic studies of a two fibronectin type-III domain segment from chicken tenascin encompassing the heparin- and contactin-binding regions.

Bisig, D., Weber, P., Vaughan, L., Winterhalter, K.H., Piontek, K.

(1999) Acta Crystallogr D Biol Crystallogr 55: 1069-1073

• PubMed: 10216309 
• DOI: https://doi.org/10.1107/s090744499900284x
• Primary Citation Related Structures: 
  1QR4


• PubMed Abstract: 
  

  A fragment of chicken tenascin consisting of fibronectin type-III domains 5 and 6 has been expressed in Escherichia coli. After modifying a previously reported purification protocol, an electrophoretically homogeneous recombinant protein was obtained from which various crystal forms could be grown under identical conditions. Only one form was suitable for structure determination. These crystals belong to space group P21, with unit-cell parameters a = 45.2, b = 57.9, c = 72.2 A, beta = 91.4 degrees, and diffract to at least 2.6 A resolution using synchrotron radiation. From density measurements of the crystals, it was found that there are two molecules in the asymmetric unit. Diffraction data of native, two platinum-derivative and one palladium-derivative crystals were collected.

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Organizational Affiliation: 
• Laboratorium für Biochemie I, Swiss Federal Institute of Technology (ETH), CH-8092 Zürich, Switzerland.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Biological Assembly 2  

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

Biological assembly 2 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 40.52 kDa 
• Atom Count: 2,787 
• Modeled Residue Count: 350 
• Deposited Residue Count: 372 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
PROTEIN (TENASCIN)	A, B	186	Gallus gallus	Mutation(s): 0
UniProt
Find proteins for P10039 (Gallus gallus) Explore P10039  Go to UniProtKB:  P10039

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.55 Å
• R-Value Free:  0.292 (Depositor) 
• R-Value Work:  0.209 (Depositor), 0.220 (DCC) 
• R-Value Observed: 0.209 (Depositor) 

Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 45.24	α = 90
b = 57.94	β = 91.4
c = 72.24	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
AMoRE	phasing
X-PLOR	refinement
DENZO	data reduction
SCALEPACK	data scaling
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1999-06-28 
Deposition Author(s): Piontek, K., Bisig, D.A.

Revision History  

• Version 1.0: 1999-06-28
  Type: Initial release
  
• Version 1.1: 2007-10-16
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2017-08-02
  Changes: Refinement description, Source and taxonomy
• Version 1.4: 2019-12-25
  Changes: Advisory, Derived calculations
• Version 1.5: 2023-08-16
  Changes: Data collection, Database references, Refinement description