2MSP image
Deposition Date 1997-12-19
Release Date 1998-04-15
Last Version Date 2024-05-22
Entry Detail
PDB ID:
2MSP
Title:
MAJOR SPERM PROTEIN, BETA ISOFORM, ENGINEERED C59S/T90C MUTANT, PUTATIVE SUBFILAMENT STRUCTURE, PH 8.5
Biological Source:
Source Organism:
Ascaris suum (Taxon ID: 6253)
Method Details:
Experimental Method:
Resolution:
3.30 Å
R-Value Free:
0.26
R-Value Work:
0.21
R-Value Observed:
0.22
Space Group:
P 41 21 2
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:MAJOR SPERM PROTEIN
Mutations:C59S, T90C
Chain IDs:A, B, C, D, E, F, G, H
Chain Length:126
Number of Molecules:8
Biological Source:Ascaris suum
Ligand Molecules
Primary Citation
Structural basis for amoeboid motility in nematode sperm.
Nat.Struct.Biol. 5 184 189 (1998)
PMID: 9501910 DOI: 10.1038/nsb0398-184

Abstact

Cell locomotion in amoeboid nematode sperm is generated by the vectorial assembly and bundling of filaments of the major sperm protein (MSP). MSP filaments are constructed from two helical subfilaments and here we describe the structure of putative MSP subfilament helices determined by X-ray crystallography at 3.3 A resolution. In addition to establishing the interfaces involved in polymerization, this structural model shows that the MSP helices are constructed from dimers and have no overall polarity, suggesting that it is unlikely that molecular motors play a direct role in the generation of protrusive force in these amoeboid cells.

Legend

Protein

Chemical

Disease

Primary Citation of related structures