title: Expression of streptococcal M protein in Escherichia coli.
abstract: The structural gene for group A streptococcal M protein, the fibrillar surface molecule enabling the organism to resist phagocytosis, has been cloned into Escherichia coli. The molecule produced by Escherichia coli is slightly larger than the M protein isolated by solubilization of the streptococcal cell wall, but is similar in size to that secreted by streptococcal protoplast and L forms. Immunologically, the molecule synthesized by Escherichia coli has the same type-specific determinants as the streptococcal M protein.
mesh_terms: D000942:Antigens, Bacterial; D001425:Bacterial Outer Membrane Proteins; D001426:Bacterial Proteins / Q000235:genetics* / Q000276:immunology; D002352:Carrier Proteins; D003001:Cloning, Molecular; D000939:Epitopes; D004926:Escherichia coli / Q000235:genetics*; D005786:Gene Expression Regulation; D008970:Molecular Weight
chemical_list: D000942:Antigens, Bacterial; D001425:Bacterial Outer Membrane Proteins; D001426:Bacterial Proteins; D002352:Carrier Proteins; D000939:Epitopes; C014689:streptococcal M protein