1ATU

UNCLEAVED ALPHA-1-ANTITRYPSIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Work: 0.195 
  • R-Value Observed: 0.195 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

The native strains in the hydrophobic core and flexible reactive loop of a serine protease inhibitor: crystal structure of an uncleaved alpha1-antitrypsin at 2.7 A.

Ryu, S.E.Choi, H.J.Kwon, K.S.Lee, K.N.Yu, M.H.

(1996) Structure 4: 1181-1192

  • DOI: 10.1016/s0969-2126(96)00126-8
  • Primary Citation of Related Structures:  
    1ATU

  • PubMed Abstract: 
  • The protein alpha1-antitrypsin is a prototype member of the serpin (serine protease inhibitor) family and is known to inhibit the activity of neutrophil elastase in the lower respiratory tract. Members of this family undergo a large structural rearrangement upon binding to a target protease, involving cleavage of the reactive-site loop ...

    The protein alpha1-antitrypsin is a prototype member of the serpin (serine protease inhibitor) family and is known to inhibit the activity of neutrophil elastase in the lower respiratory tract. Members of this family undergo a large structural rearrangement upon binding to a target protease, involving cleavage of the reactive-site loop. This loop is then inserted into the main body of the enzyme following the opening of a central beta sheet, leading to stabilization of the structure. Random mutageneses of alpha1-antitrypsin identified various mutations that stabilize the native structure and retard the insertion of the reactive-site loop. Structural studies of these mutations may reveal the mechanism of the conformational change.


    Organizational Affiliation

    Protein Engineering Research Division, Korea Research Institute of Bioscience and Biotechnology, KIST, Yusong, Taejon, South Korea. ryuse@mcr1.geri.re.kr



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ALPHA-1-ANTITRYPSINA374Homo sapiensMutation(s): 7 
Gene Names: SERPINA1AATPIPRO0684PRO2209
UniProt & NIH Common Fund Data Resources
Find proteins for P01009 (Homo sapiens)
Explore P01009 
Go to UniProtKB:  P01009
PHAROS:  P01009
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP01009
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Work: 0.195 
  • R-Value Observed: 0.195 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 115.78α = 90
b = 39.37β = 103.8
c = 90.43γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
RIGAKUdata reduction
RIGAKUdata scaling
X-PLORphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1997-08-20
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2021-11-03
    Changes: Database references, Other