1KOE | pdb_00001koe

ENDOSTATIN

• PDB DOI: https://doi.org/10.2210/pdb1KOE/pdb

• Classification: ANGIOGENESIS INHIBITOR
• Organism(s): Mus musculus
• Expression System: Homo sapiens
• Mutation(s): No 


• Deposited: 1998-01-22 Released: 1999-02-16 
• Deposition Author(s): Hohenester, E., Sasaki, T., Olsen, B.R., Timpl, R.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.50 Å
• R-Value Free: 
  0.224 (Depositor), 0.215 (DCC) 
• R-Value Work: 
  0.190 (Depositor), 0.181 (DCC) 
• R-Value Observed: 
  0.190 (Depositor) 

Literature

Crystal structure of the angiogenesis inhibitor endostatin at 1.5 A resolution.

Hohenester, E., Sasaki, T., Olsen, B.R., Timpl, R.

(1998) EMBO J 17: 1656-1664

• PubMed: 9501087 
• DOI: https://doi.org/10.1093/emboj/17.6.1656
• Primary Citation Related Structures: 
  1KOE


• PubMed Abstract: 
  

  A number of extracellular proteins contain cryptic inhibitors of angiogenesis. Endostatin is a 20 kDa C-terminal proteolytic fragment of collagen XVIII that potently inhibits endothelial cell proliferation and angiogenesis. Therapy of experimental cancer with endostatin leads to tumour dormancy and does not induce resistance. We have expressed recombinant mouse endostatin and determined its crystal structure at 1.5 A resolution. The structure reveals a compact fold distantly related to the C-type lectin carbohydrate recognition domain and the hyaluronan-binding Link module. The high affinity of endostatin for heparin is explained by the presence of an extensive basic patch formed by 11 arginine residues. Endostatin may inhibit angiogenesis by binding to the heparan sulphate proteoglycans involved in growth factor signalling.

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Organizational Affiliation: 
• Department of Crystallography, Birkbeck College, London WC1E 7HX, UK. e.hohenester.cryst.bbk.ac.uk

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 18.95 kDa 
• Atom Count: 1,416 
• Modeled Residue Count: 172 
• Deposited Residue Count: 172 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ENDOSTATIN	A	172	Mus musculus	Mutation(s): 0
UniProt & NIH Common Fund Data Resources
Find proteins for P39061 (Mus musculus) Explore P39061  Go to UniProtKB:  P39061
IMPC:  MGI:88451

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.50 Å
• R-Value Free:  0.224 (Depositor), 0.215 (DCC) 
• R-Value Work:  0.190 (Depositor), 0.181 (DCC) 
• R-Value Observed: 0.190 (Depositor) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 45.56	α = 90
b = 53.95	β = 90
c = 65.85	γ = 90

Software Package:

Software Name	Purpose
MOSFLM	data reduction
SCALA	data scaling
X-PLOR	model building
X-PLOR	refinement
CCP4	data scaling
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1999-02-16 
Deposition Author(s): Hohenester, E., Sasaki, T., Olsen, B.R., Timpl, R.

Revision History  

• Version 1.0: 1999-02-16
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2021-03-31
  Changes: Advisory, Source and taxonomy
• Version 1.4: 2024-10-23
  Changes: Advisory, Data collection, Database references, Structure summary