1PSI

Intact recombined alpha1-antitrypsin mutant PHE 51 to LEU


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.92 Å
  • R-Value Free: 0.288 
  • R-Value Work: 0.218 
  • R-Value Observed: 0.218 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Inhibitory conformation of the reactive loop of alpha 1-antitrypsin.

Elliott, P.R.Lomas, D.A.Carrell, R.W.Abrahams, J.P.

(1996) Nat Struct Biol 3: 676-681

  • DOI: 10.1038/nsb0896-676
  • Primary Citation of Related Structures:  
    1PSI

  • PubMed Abstract: 
  • The reactive site loop of the serpin family of serine proteinase inhibitors is flexible and can adopt a number of diverse conformations. A 2.9 A resolution structure of alpha 1-antitrypsin-the principal proteinase inhibitor in human plasma-shows the loop in a stable canonical conformation matching that found in all other families of serine proteinase inhibitors ...

    The reactive site loop of the serpin family of serine proteinase inhibitors is flexible and can adopt a number of diverse conformations. A 2.9 A resolution structure of alpha 1-antitrypsin-the principal proteinase inhibitor in human plasma-shows the loop in a stable canonical conformation matching that found in all other families of serine proteinase inhibitors. This unexpected finding in the absence of loop insertion into the body of the molecule favours a two-stage mechanism of inhibition and provides a model for the heparin activation of antithrombin. The beta-pleated strand conformation of the loop also accounts for the polymerization of the serpins in disease and for their association with other beta-sheet structures, most notably the beta-amyloid of Alzheimer's disease.


    Organizational Affiliation

    Department of Haematology, University of Cambridge, UK.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ALPHA=1=-ANTITRYPSINA394Homo sapiensMutation(s): 1 
Gene Names: ALPHA-1-ANTITRYPSINSERPINA1AATPIPRO0684PRO2209
UniProt & NIH Common Fund Data Resources
Find proteins for P01009 (Homo sapiens)
Explore P01009 
Go to UniProtKB:  P01009
PHAROS:  P01009
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
SCS
Query on SCS
AL-PEPTIDE LINKINGC5 H11 N O2 S2CYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.92 Å
  • R-Value Free: 0.288 
  • R-Value Work: 0.218 
  • R-Value Observed: 0.218 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 112.958α = 90
b = 38.508β = 104.85
c = 88.928γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
MOSFLMdata reduction
CCP4data scaling
X-PLORphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1996-12-07
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance