1XQJ

3.10 A Crystal structure of maspin, space group I 4 2 2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.201 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Crystal Structure of Human Maspin, a Serpin with Antitumor Properties: Reactive Center Loop of Mapsin is Exposed but Constrained

Al-Ayyoubi, M.Gettins, P.G.Volz, K.

(2004) J Biol Chem 279: 55540-55544

  • DOI: 10.1074/jbc.M409957200
  • Primary Citation of Related Structures:  
    1XQG, 1XQJ

  • PubMed Abstract: 
  • Maspin, a member of the serpin superfamily, has tumor suppressing activity against breast and prostate cancer. Maspin inhibits tumor growth by blocking cell invasion, and its reactive center loop (RCL) is thought to mediate this activity. To understand this function on the molecular level, we have solved the three-dimensional structure of Maspin to 3 ...

    Maspin, a member of the serpin superfamily, has tumor suppressing activity against breast and prostate cancer. Maspin inhibits tumor growth by blocking cell invasion, and its reactive center loop (RCL) is thought to mediate this activity. To understand this function on the molecular level, we have solved the three-dimensional structure of Maspin to 3.1 A resolution. The molecular structure shows the characteristic features of the serpin fold, but the RCL of Maspin is unique in length, composition, and placement. Although the RCL of Maspin is accessible and cleavable by some proteinases, it functions in the uncleaved, constrained conformation observed here. These structural results will contribute to our understanding of the mechanism by which Maspin suppresses tumors.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, University of Illinois at Chicago, 835 S. Wolcott Avenue, Chicago, IL 60612-7334.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
MaspinA389Homo sapiensMutation(s): 8 
Gene Names: SERPINB5PI5
UniProt & NIH Common Fund Data Resources
Find proteins for P36952 (Homo sapiens)
Explore P36952 
Go to UniProtKB:  P36952
PHAROS:  P36952
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP36952
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.201 
  • Space Group: I 4 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 146.81α = 90
b = 146.81β = 90
c = 117.53γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
HKL-2000data reduction
CNSrefinement
HKL-2000data scaling
CNSphasing

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-10-26
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2021-10-20
    Changes: Database references