1XQJ

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.201 

wwPDB Validation 3D Report Full Report


This is version 1.2 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:  

  • 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 understa ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Maspin
A
389Homo sapiensMutation(s): 8 
Gene Names: SERPINB5 (PI5)
Find proteins for P36952 (Homo sapiens)
Go to Gene View: SERPINB5
Go to UniProtKB:  P36952
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.201 
  • Space Group: I 4 2 2
Unit Cell:
Length (Å)Angle (°)
a = 146.810α = 90.00
b = 146.810β = 90.00
c = 117.530γ = 90.00
Software Package:
Software NamePurpose
CNSphasing
HKL-2000data reduction
HKL-2000data collection
CNSrefinement
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-10-26
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance