1SBW

CRYSTAL STRUCTURE OF MUNG BEAN INHIBITOR LYSINE ACTIVE FRAGMENT COMPLEX WITH BOVINE BETA-TRYPSIN AT 1.8A RESOLUTION


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.164 

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This is version 1.2 of the entry. See complete history


Literature

Crystal structure of mung bean inhibitor lysine active fragment complex with bovine beta-trypsin at 1.8A resolution.

Zhu, Y.Huang, Q.Chi, C.

(1999) J Biomol Struct Dyn 16: 1219-1224

  • DOI: 10.1080/07391102.1999.10508329
  • Primary Citation of Related Structures:  
    1SBW

  • PubMed Abstract: 
  • The crystal structure of the complex of mung bean inhibitor lysine active fragment with bovine beta-trypsin has been determined by X-ray crystallographic analysis at a resolution of 1.8 A. Refinement of the model of the complex converged at a final R value of 0 ...

    The crystal structure of the complex of mung bean inhibitor lysine active fragment with bovine beta-trypsin has been determined by X-ray crystallographic analysis at a resolution of 1.8 A. Refinement of the model of the complex converged at a final R value of 0.16. From the resulting electron density map, about one-third of the residues of the inhibitor were identified and two residues, at position P4 and P2' respectively, were found to be inconsistent with the sequence reported previously. The peptide chain of the inhibitor at the trypsin active site turns back sharply at Pro23I and forms a 9-residue reactive loop, which interacts with trypsin in a similar manner to the other families of inhibitors, suggesting an important and common role of these regions in exhibiting inhibitory activity.


    Organizational Affiliation

    Department of Chemistry, Peking University, Beijing, PR China.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (BETA-TRYPSIN)A223Bos taurusMutation(s): 0 
EC: 3.4.21.4
Find proteins for P00760 (Bos taurus)
Explore P00760 
Go to UniProtKB:  P00760
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (MUNG BEAN INHIBITOR LYSIN ACTIVE FRAGMENT)B [auth I]35Vigna radiataMutation(s): 0 
Find proteins for P01062 (Vigna radiata var. radiata)
Explore P01062 
Go to UniProtKB:  P01062
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download Ideal Coordinates CCD File 
D [auth A]SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
CA
Query on CA

Download Ideal Coordinates CCD File 
C [auth A]CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.164 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 63.27α = 90
b = 63.55β = 90
c = 69.44γ = 90
Software Package:
Software NamePurpose
X-PLORrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1999-05-06
    Type: Initial release
  • Version 1.1: 2008-04-26
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance