3BQQ

Crystal Structure of Human Saposin D (triclinic)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.195 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structures of the human ceramide activator protein saposin D.

Popovic, K.Prive, G.G.

(2008) Acta Crystallogr.,Sect.D 64: 589-594

  • DOI: 10.1107/S0907444908003120
  • Primary Citation of Related Structures:  3BQP

  • PubMed Abstract: 
  • Saposin D is a sphingolipid activator protein required for the lysosomal breakdown of ceramide to a fatty acid and sphingosine by acid ceramidase. The crystal structure of saposin D has been determined in two different crystal forms, resulting in a t ...

    Saposin D is a sphingolipid activator protein required for the lysosomal breakdown of ceramide to a fatty acid and sphingosine by acid ceramidase. The crystal structure of saposin D has been determined in two different crystal forms, resulting in a total of six crystallographically independent views of this small 80-amino-acid protein. All of the structures are highly similar and reveal the monomeric form of the saposin fold previously seen in the crystal structures of saposins A and C. Saposin D is slightly more compact than the related saposins A and C owing to a slight repositioning of the 'stem' and 'hairpin' regions of the protein.


    Organizational Affiliation

    Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROACTIVATOR POLYPEPTIDE
C, A, B, D
80Homo sapiensGene Names: PSAP (GLBA, SAP1)
Find proteins for P07602 (Homo sapiens)
Go to Gene View: PSAP
Go to UniProtKB:  P07602
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.195 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 40.660α = 89.90
b = 41.120β = 81.20
c = 65.450γ = 71.40
Software Package:
Software NamePurpose
PHASERphasing
PROTEUM PLUSdata reduction
PROTEUM PLUSdata collection
REFMACrefinement
PROTEUM PLUSdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-02-05
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance