3OPU image
Deposition Date 2010-09-02
Release Date 2011-01-19
Last Version Date 2024-10-16
Entry Detail
PDB ID:
3OPU
Keywords:
CELL ADHESION
Title:
Crystal structure of the C-terminal domain of Streptococcus mutans surface protein SpaP
Biological Source:
Source Organism:
Streptococcus mutans (Taxon ID: 1309)
Host Organism:
Escherichia coli
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.18 Å
R-Value Free:
0.24
R-Value Work:
0.21
R-Value Observed:
0.21
Space Group:
P 21 21 2
3OPU validation report
Macromolecular Entities
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:SpaP
Chain IDs:A, B, C, D, E, F
Chain Length:339
Number of Molecules:6
Biological Source:Streptococcus mutans
UniProt ID:P11657 Pfam ID:PF17998, PF16364
Ligand Molecules
CA
Primary Citation
Structure of the C-terminal domain of the surface antigen SpaP from the caries pathogen Streptococcus mutans.
Acta Crystallogr.,Sect.F 67 23 26 (2011)
PMID: 21206016 DOI: 10.1107/S174430911004443X

Abstact

SpaP is a 1500-residue adhesin expressed on the surface of the caries-implicated bacterium Streptococcus mutans. SpaP is a member of the antigen I/II (AgI/II) family of proteins expressed by oral streptococci. These surface proteins are crucial for the incorporation of streptococci into dental plaque. The structure of the C-terminal domain of SpaP (residues 1136-1489) was solved and refined to 2.2 Å resolution with six molecules in the asymmetric unit. Similar to a related AgI/II structure, SpaP is stabilized by isopeptide bonds between lysine and asparagine side chains.

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Disease

Primary Citation of related structures
3OPU