1TPS

ATOMIC STRUCTURE OF THE TRYPSIN-A90720A COMPLEX: A UNIFIED APPROACH TO STRUCTURE AND FUNCTION

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.197 
  • R-Value Work: 0.162 
  • R-Value Observed: 0.162 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history. 


Literature

Atomic structure of the trypsin-A90720A complex: a unified approach to structure and function.

Lee, A.Y., Smitka, T.A., Bonjouklian, R., Clardy, J.

(1994) Chem Biol 1: 113-117

  • DOI: 10.1016/1074-5521(94)90049-3
  • Primary Citation of Related Structures:  
    1TPS

  • PubMed Abstract: 

    • A90720A is a potent serine proteinase inhibitor produced by the terrestrial blue-green alga Microchaete loktakensis. Most of its structure has been defined by spectroscopic and degradative studies, but the configurations of several stereochemical cen ...

    A90720A is a potent serine proteinase inhibitor produced by the terrestrial blue-green alga Microchaete loktakensis. Most of its structure has been defined by spectroscopic and degradative studies, but the configurations of several stereochemical centers are unknown, and its mode of inhibition of serine proteinases is not understood. We therefore examined the structure of the compound in a complex with trypsin.

    Organizational Affiliation: 

    Department of Chemistry, Baker Laboratory, Cornell University, Ithaca, NY 14853-1301, USA.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
TRYPSINA223Bos 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:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
INHIBITOR A90720AB8CyanobacteriaMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA
Download Ideal Coordinates CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N		 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
A9AIC50 :  10   nM  PDBBind
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.197 
  • R-Value Work: 0.162 
  • R-Value Observed: 0.162 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 63.74α = 90
b = 63.55β = 90
c = 69.1γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 1994-09-04 
  • Released Date: 1995-01-26 
    • Deposition Author(s): Lee, A.Y., Clardy, J.

Revision History 

  • Version 1.0: 1995-01-26
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Atomic model, Database references, Derived calculations, Non-polymer description, Structure summary, Version format compliance
  • Version 1.3: 2011-08-10
    Changes: Derived calculations