1BI6

NMR STRUCTURE OF BROMELAIN INHIBITOR VI FROM PINEAPPLE STEM


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Submitted: 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Solution structure of bromelain inhibitor IV from pineapple stem: structural similarity with Bowman-Birk trypsin/chymotrypsin inhibitor from soybean.

Hatano, K.Kojima, M.Tanokura, M.Takahashi, K.

(1996) Biochemistry 35: 5379-5384

  • DOI: 10.1021/bi952754+
  • Primary Citation of Related Structures:  2BI6

  • PubMed Abstract: 
  • Bromelain inhibitor VI from pineapple stem (BI-VI) is a unique double-chain inhibitor with an 11-residue light chain and a 41-residue heavy chain by disulfide bonds and inhibits the cysteine proteinase bromelain competitively. The structure of BI-VI ...

    Bromelain inhibitor VI from pineapple stem (BI-VI) is a unique double-chain inhibitor with an 11-residue light chain and a 41-residue heavy chain by disulfide bonds and inhibits the cysteine proteinase bromelain competitively. The structure of BI-VI in aqueous solution was determined using nuclear magnetic resonance spectroscopy and simulated annealing-based calculations. Its three-dimensional structure was shown to be composed of two distinct domains, each of which is formed by a three-stranded antiparallel beta-sheet. Unexpectedly, BI-VI was found to share a similar folding and disulfide bond connectivities not with cystatin superfamily inhibitors which inhibit the same cysteine proteinases but with the Bowman-Birk trypsin/chymotrypsin inhibitor from soybean (BBI-I). BBI-I is a 71-residue inhibitor which has two independent inhibitory sites toward the serine proteinases trypsin and chymotrypsin. These structural similarities with BBI-I suggest that they have evolved from a common ancestor and differentiated in function during a course of molecular evolution.


    Related Citations: 
    • Primary Structure,Sequence-Specific 1H Assignments and Secondary Structure in Solution of Bromelain Inhibitor Vi from Pineapple Stem
      Hatano, K.,Kojima, M.,Tanokura, M.,Takahashi, K.
      (1995) Eur.J.Biochem. 232: 335


    Organizational Affiliation

    Department of Biophysics and Biochemistry, Faculty of Science, University of Tokyo, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
BROMELAIN INHIBITOR VI
L
11Ananas comosusN/A
Find proteins for P01068 (Ananas comosus)
Go to UniProtKB:  P01068
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
BROMELAIN INHIBITOR VI
H
41Ananas comosusN/A
Find proteins for P01068 (Ananas comosus)
Go to UniProtKB:  P01068
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Submitted: 
Software Package:
Software NamePurpose
X-PLORphasing
X-PLORrefinement
X-PLORmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 1995-12-07 
  • Released Date: 1996-04-03 
  • Deposition Author(s): Hatano, K.-I.

Revision History 

  • Version 1.0: 1996-04-03
    Type: Initial release
  • Version 1.1: 2008-03-03
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-11-29
    Type: Derived calculations, Other