1MSP

MAJOR SPERM PROTEIN, ALPHA ISOFORM (RECOMBINANT), PH 4.6


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

2.5 A resolution crystal structure of the motile major sperm protein (MSP) of Ascaris suum.

Bullock, T.L.Roberts, T.M.Stewart, M.

(1996) J.Mol.Biol. 263: 284-296

  • DOI: 10.1006/jmbi.1996.0575

  • PubMed Abstract: 
  • We have determined the structure of the Ascaris major sperm protein (MSP) to 2.5 A resolution using X-ray crystallography. The MSP polypeptide chain has an immunoglobulin-like fold based on a seven-stranded beta sandwich. In two strands, cis-proline ...

    We have determined the structure of the Ascaris major sperm protein (MSP) to 2.5 A resolution using X-ray crystallography. The MSP polypeptide chain has an immunoglobulin-like fold based on a seven-stranded beta sandwich. In two strands, cis-proline residues impart distinctive kinks, and overall the structure most closely resembles that of the N-terminal domain of the bacterial chaperonin, PapD. In the C2 crystal form which we have solved here, two MSP chains are tightly associated in the asymmetric unit and are related by a non-crystallographic 2-fold rotation axis. This arrangement almost certainly represents the MSP dimer that is present in solution. Additionally, the arrangement of two MSP dimers at one of the crystallographic 2-fold axes in the 215 A unit cell suggests a possible mode for the assembly of MSP into the filaments which promote cell movement. This dimer-dimer association is based on a beta sheet extension mechanism between adjoining MSP monomers which resembles the interaction between PapD and its protein substrate.


    Related Citations: 
    • New Crystal Forms of the Motile Major Sperm Protein (Msp) of Ascaris Suum
      Bullock, T.L.,Parthasarathy, G.,King, K.L.,Kent, H.M.,Roberts, T.M.,Stewart, M.
      (1996) J.Struct.Biol. 116: 432
    • Nematode Sperm Locomotion
      Roberts, T.M.,Stewart, M.
      (1995) Curr.Opin.Cell Biol. 7: 13
    • Worm Sperm and Advances in Cell Locomotion
      Theriot, J.A.
      (1996) Cell 84: 1


    Organizational Affiliation

    MRC Laboratory of Molecular Biology, Cambridge, England.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
MAJOR SPERM PROTEIN
A, B
126Ascaris suumN/A
Find proteins for P27439 (Ascaris suum)
Go to UniProtKB:  P27439
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 215.360α = 90.00
b = 38.480β = 93.11
c = 32.460γ = 90.00
Software Package:
Software NamePurpose
MOSFLMdata reduction
TNTrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1996-12-07
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance