1XQG

3.10 A crystal structure of maspin, Space group P 4 21 2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.194 
  • R-Value Observed: 0.194 

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
  • Structures With Same Primary Citation

  • 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, B
389Homo sapiensMutation(s): 8 
Gene Names: SERPINB5PI5
Find proteins for P36952 (Homo sapiens)
Go to UniProtKB:  P36952
NIH Common Fund Data Resources
PHAROS  P36952
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.194 
  • R-Value Observed: 0.194 
  • Space Group: P 4 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 147.462α = 90
b = 147.462β = 90
c = 118.038γ = 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 

  • 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