Biological Assembly 1  

 3D View: Structure | Electron Density

Pseudo Symmetry: Cyclic - C2  (3D View)
Pseudo Stoichiometry: Homo 2-mer - A2 Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

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

Macromolecule Content

• Total Structure Weight: 44.93 kDa 
• Atom Count: 3159 
• Modelled Residue Count: 411 
• Deposited Residue Count: 411 
• Unique protein chains: 2

1FH5

CRYSTAL STRUCTURE OF THE FAB FRAGMENT OF THE MONOCLONAL ANTIBODY MAK33

• DOI: 10.2210/pdb1FH5/pdb

• Classification: IMMUNE SYSTEM
• Organism(s): Homo sapiens
• Mutation(s): No 


• Deposited: 2000-07-31 Released: 2000-09-13 
• Deposition Author(s): Augustine, J.G., de la Calle, A., Knarr, G., Buchner, J., Frederick, C.A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.90 Å
• R-Value Free: 0.243 
• R-Value Work: 0.198 

Literature

The crystal structure of the fab fragment of the monoclonal antibody MAK33. Implications for folding and interaction with the chaperone bip.

Augustine, J.G., de La Calle, A., Knarr, G., Buchner, J., Frederick, C.A.

(2001) J Biol Chem 276: 3287-3294

• PubMed: 11036070 
• DOI: 10.1074/jbc.M005221200
• Primary Citation of Related Structures:  
  1FH5


• PubMed Abstract: 
  

The Fab fragment of the murine monoclonal antibody, MAK33, directed against human creatine kinase of the muscle-type, was crystallized and the three-dimensional structure was determined to 2.9 A. The antigen-binding surface of MAK33 shows a convex overall shape typical for immunoglobulins binding large antigens. The structure allows us to analyze the environment of cis-prolyl-peptide bonds whose isomerization is of key importance in the folding process. These residues seem to be involved with not only domain stability but also seem to play a role in the association of heavy and light chains, reinforcing the importance of beta-strand recognition in antibody assembly. The structure also allows the localization of segments of primary sequence postulated to represent binding sites for the ER-specific chaperone BiP within the context of the entire Fab fragment. These sequences are found primarily in beta-strands that are necessary for interactions between the individual domains.

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Organizational Affiliation: 

Dana-Farber Cancer Institute and Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts 02115, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
MONOCLONAL ANTIBODY MAK33	L	213	Homo sapiens	Mutation(s): 0

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
MONOCLONAL ANTIBODY MAK33	H	198	Homo sapiens	Mutation(s): 0

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.90 Å
• R-Value Free: 0.243 
• R-Value Work: 0.198 
• Space Group: P 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 58.91	α = 109.14
b = 65.66	β = 106.94
c = 73.46	γ = 95.91

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2000-07-31 
• Released Date: 2000-09-13 
Deposition Author(s): Augustine, J.G., de la Calle, A., Knarr, G., Buchner, J., Frederick, C.A.

Revision History  

• Version 1.0: 2000-09-13
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2014-02-26
  Changes: Other