1EAI

COMPLEX OF ASCARIS CHYMOTRPSIN/ELASTASE INHIBITOR WITH PORCINE ELASTASE

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history. 


Literature

The molecular structure of the complex of Ascaris chymotrypsin/elastase inhibitor with porcine elastase.

Huang, K., Strynadka, N.C., Bernard, V.D., Peanasky, R.J., James, M.N.

(1994) Structure 2: 679-689

  • DOI: https://doi.org/10.1016/s0969-2126(00)00068-x
  • Primary Citation of Related Structures:  
    1EAI

  • PubMed Abstract: 

    • The intestinal parasitic worm, Ascaris suum, produces a variety of protein inhibitors that defend the organism against the host's proteinases. Eight different proteins from Ascaris suum have been identified as inhibitors of serine proteinases, targeting chymotrypsin, elastase and trypsin ...

    The intestinal parasitic worm, Ascaris suum, produces a variety of protein inhibitors that defend the organism against the host's proteinases. Eight different proteins from Ascaris suum have been identified as inhibitors of serine proteinases, targeting chymotrypsin, elastase and trypsin. These inhibitors share 30-40% sequence identity with one another, but have virtually no sequence identity with members of any of the other families of serine proteinase inhibitors.

    Related Citations: 
    • Structure of Native Porcine Pancreatic Elastase at 1.65 Resolution
      Meyer, E., Cole, G., Radharkrishnan, R.
      (1988) Acta Crystallogr B B44: 22
    Organizational Affiliation: 

    Department of Biochemistry, University of Alberta, Edmonton, Canada.



Macromolecules
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (ELASTASE)
A, B
240Sus scrofaMutation(s): 0 
Gene Names: CELA1, ELA1
EC: 3.4.21.36
UniProt
Find proteins for P00772 (Sus scrofa)
Explore P00772 
Go to UniProtKB:  P00772
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00772
Protein Feature View
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  • Reference Sequence
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(by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (CHYMOTRYPSIN/ELASTASE ISOINHIBITOR 1)
C, D
61Ascaris suumMutation(s): 0 
UniProt
Find proteins for P07851 (Ascaris suum)
Explore P07851 
Go to UniProtKB:  P07851
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP07851
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 84.02α = 90
b = 84.02β = 90
c = 190.93γ = 120
Software Package:
Software NamePurpose
X-GENdata scaling
X-GENdata reduction
AMoREphasing
TNTrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1999-04-05
    Type: Initial release
  • Version 1.1: 2007-10-16
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance
  • Version 1.3: 2017-10-04
    Changes: Refinement description
  • Version 1.4: 2023-08-09
    Changes: Data collection, Database references, Refinement description