Biological Assembly 1  

 3D View: Structure | Ligand Interaction

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Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - ABC Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 3-mer -A2B 

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

Macromolecule Content

• Total Structure Weight: 62715.74 
• Atom Count: 4366 
• Residue Count: 562 
• Unique protein chains: 3

1H0D

Crystal structure of Human Angiogenin in complex with Fab fragment of its monoclonal antibody mAb 26-2F

• DOI: 10.2210/pdb1H0D/pdb

• Classification: IMMUNE SYSTEM/HYDROLASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli


• Deposited: 2002-06-19 Released: 2003-06-19 
• Deposition Author(s): Chavali, G.B., Papageorgiou, A.C., Acharya, K.R.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2 Å
• R-Value Free: 0.272 
• R-Value Work: 0.232 

Literature

The Crystal Structure of Human Angiogenin in Complex with an Antitumor Neutralizing Antibody

Chavali, G.B., Papageorgiou, A.C., Olson, K., Fett, J., Hu, G., Shapiro, R., Acharya, K.R.

(2003) Structure 11: 875

• PubMed: 12842050 


• PubMed Abstract: 
  

The murine monoclonal antibody 26-2F neutralizes the angiogenic and ribonucleolytic activities of human angiogenin (ANG) and is highly effective in preventing the establishment and metastatic dissemination of human tumors in athymic mice. Here we report a 2.0 A resolution crystal structure for the complex of ANG with the Fab fragment of 26-2F that reveals the detailed interactions between ANG and the complementarity-determining regions (CDRs) of the antibody. Surprisingly, Fab binding induces a dramatic conformational change in the cell binding region of ANG at the opposite end of the molecule from the combining site; crosslinking experiments indicate that this rearrangement also occurs in solution. The ANG-Fab complex structure should be invaluable for designing maximally humanized versions of 26-2F for potential clinical use.

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Organizational Affiliation: 

Department of Biology and Biochemistry, University of Bath, Claverton Down, BA2 7AY, Bath, United Kingdom.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
ANTIBODY FAB FRAGMENT, LIGHT CHAIN	A	216	N/A	Mutation(s): 0
Protein Feature View is not available: No corresponding UniProt sequence found.

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details
ANTIBODY FAB FRAGMENT, HEAVY CHAIN	B	223	N/A	Mutation(s): 0
Protein Feature View is not available: No corresponding UniProt sequence found.

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details
ANGIOGENIN	C	123	Homo sapiens	Mutation(s): 0  Gene Names: ANG (RNASE5) EC: 3.1.27.-
Find proteins for P03950 (Homo sapiens) Go to Gene View: ANG Go to UniProtKB:  P03950

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
SO4	A, B, C	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
GOL	A, B	GLYCEROL GLYCERIN; PROPANE-1,2,3-TRIOL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
PCA	C	L-PEPTIDE LINKING	C5 H7 N O3		GLN

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2 Å
• R-Value Free: 0.272 
• R-Value Work: 0.232 
• Space Group: C 1 2 1

Unit Cell:

Length (Å)	Angle (°)
a = 120.580	α = 90.00
b = 72.530	β = 112.46
c = 86.990	γ = 90.00

Software Package:

Software Name	Purpose
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2002-06-19 
• Released Date: 2003-06-19 
• Deposition Author(s): Chavali, G.B., Papageorgiou, A.C., Acharya, K.R.

Revision History 

• Version 1.0: 2003-06-19
  Type: Initial release
• Version 1.1: 2011-10-12
  Type: Derived calculations, Non-polymer description, Other, Refinement description, Structure summary, Version format compliance