Biological Assembly 1  

 3D View: Structure | Electron Density

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Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA,PQS (software)

Macromolecule Content

• Total Structure Weight: 12734.50 
• Atom Count: 890 
• Residue Count: 112 
• Unique protein chains: 1

1TGK

HUMAN TRANSFORMING GROWTH FACTOR BETA 3, CRYSTALLIZED FROM PEG 4000

• DOI: 10.2210/pdb1TGK/pdb

• Classification: GROWTH FACTOR
• Organism(s): Homo sapiens
• Expression System: Escherichia coli


• Deposited: 1996-07-10 Released: 1997-03-12 
• Deposition Author(s): Mittl, P.R.E., Priestle, J.P., Gruetter, M.G.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.3 Å
• R-Value Work: 0.228 

Literature

The crystal structure of TGF-beta 3 and comparison to TGF-beta 2: implications for receptor binding.

Mittl, P.R., Priestle, J.P., Cox, D.A., McMaster, G., Cerletti, N., Grutter, M.G.

(1996) Protein Sci. 5: 1261-1271

• PubMed: 8819159 
• DOI: 10.1002/pro.5560050705
• Primary Citation of Related Structures:  
  1TGJ


• PubMed Abstract: 
  

Transforming growth factors beta belong to a group of cytokines that control cellular proliferation and differentiation. Five isoforms are known that share approximately 75% sequence identity, but exert different biological activities. The structure of TGF-beta 3 was solved by X-ray crystallography and refined to a final R-factor of 17.5% at 2.0 A resolution. Comparison with the structure of TGF-beta 2 (Schlunegger MP, Grütter MG, 1992, Nature 358:430-434; Daopin S, Piez KA, Ogawa Y, Davies DR, 1992, Science 257:369-373) reveals a virtually identical central core. Differences exist in the conformations of the N-terminal alpha-helix and in the beta-sheet loops. In TGF-beta 3, the N-terminal alpha-helix has moved approximately 1 A away from the central core. This movement can be correlated with the mutation of Leu 17 to Val and Ala 47 to Pro in TGF-beta 3. The beta-sheet loops rotate as a rigid body 9 degrees around an axis that runs approximately parallel to the dimer axis. If these differences are recognized by the TGF-beta receptors, they might account for the individual cellular responses. A molecule of the precipitating agent dioxane is bound in a crystal contact, forming a hydrogen bond with Trp 32. This dioxane may occupy a carbohydrate-binding site, because dioxane possesses some structural similarity with a carbohydrate. The dioxane is in contact with two tryptophans, which are often involved in carbohydrate recognition.

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Related Citations: 

• Refined Crystal Structure of Human Transforming Growth Factor Beta 2 at 1.95 A Resolution
  Schlunegger, M.P.,Grutter, M.G.
  (1993) J.Mol.Biol. 231: 445




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Organizational Affiliation: 

Ciba-Geigy Ltd., Pharmaceutical Research, CH-4002 Basle, Switzerland.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
TRANSFORMING GROWTH FACTOR BETA 3	A	112	Homo sapiens	Mutation(s): 0  Gene Names: TGFB3
Find proteins for P10600 (Homo sapiens) Go to Gene View: TGFB3 Go to UniProtKB:  P10600

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.3 Å
• R-Value Work: 0.228 
• Space Group: P 6₁ 2 2

Unit Cell:

Length (Å)	Angle (°)
a = 77.800	α = 90.00
b = 77.800	β = 90.00
c = 143.200	γ = 120.00

Software Package:

Software Name	Purpose
X-PLOR	model building
MADNES	data reduction
MADNES	data collection
X-PLOR	phasing
X-PLOR	refinement
ROTAVATA-AGROVATA	data reduction
CCP4	data scaling
ROTAVATA	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1996-07-10 
• Released Date: 1997-03-12 
• Deposition Author(s): Mittl, P.R.E., Priestle, J.P., Gruetter, M.G.

Revision History 

• Version 1.0: 1997-03-12
  Type: Initial release
• Version 1.1: 2008-03-24
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Derived calculations, Version format compliance
• Version 1.3: 2018-04-18
  Type: Data collection, Other, Refinement description