Biomaterial Database

Surface-localized protein antigens of group B streptococci. 1988

P Ferrieri

Department of Laboratory Medicine/Pathology, University of Minnesota Medical School, Minneapolis 55455.

There are three major surface-localized protein antigens of group B streptococci: c, R, and X. Their precise role in human immunity to group B streptococci has not been defined. Studies of the c protein suggested that type II strains possessing both trypsin-resistant and trypsin-sensitive components of the c protein were less easily killed in vitro and were more virulent in an infant rat model of infection as compared with type II strains that do not bear these proteins. The c protein components were immunogenic in mice and rabbits. Polyclonal rabbit antisera were protective in the infant rat model of bacteremia/sepsis and facilitated killing of type II strains bearing the c protein in an in vitro opsonophagocytic bacterial killing assay. The role of the IgA-binding capacity of the c protein in altering the interaction of group B streptococcal strains with host defenses remains undefined at this time.

UI	MeSH Term	Description	Entries
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D000907	Antibodies, Bacterial	Immunoglobulins produced in a response to BACTERIAL ANTIGENS.	Bacterial Antibodies
D000911	Antibodies, Monoclonal	Antibodies produced by a single clone of cells.	Monoclonal Antibodies,Monoclonal Antibody,Antibody, Monoclonal
D000942	Antigens, Bacterial	Substances elaborated by bacteria that have antigenic activity.	Bacterial Antigen,Bacterial Antigens,Antigen, Bacterial
D000954	Antigens, Surface	Antigens on surfaces of cells, including infectious or foreign cells or viruses. They are usually protein-containing groups on cell membranes or walls and may be isolated.	Cell Surface Antigens,Surface Antigens,Surface Markers, Immunological,Cell Surface Antigen,Immunologic Surface Markers,Markers, Immunological Surface,Surface Antigen,Surface Markers, Immunologic,Antigen, Cell Surface,Antigen, Surface,Antigens, Cell Surface,Immunological Surface Markers,Markers, Immunologic Surface,Surface Antigen, Cell,Surface Antigens, Cell
D013290	Streptococcal Infections	Infections with bacteria of the genus STREPTOCOCCUS.	Group A Strep Infection,Group A Streptococcal Infection,Group A Streptococcal Infections,Group B Strep Infection,Group B Streptococcal Infection,Group B Streptococcal Infections,Infections, Streptococcal,Infection, Streptococcal,Streptococcal Infection
D013292	Streptococcus agalactiae	A bacterium which causes mastitis in cattle and occasionally in man.	Streptococcus Group B

Related Publications

P Ferrieri

Properties of group B streptococci with protein surface antigens X and R.

December 1990, Journal of clinical microbiology,

P Ferrieri

Immunoelectron microscopic analysis of polysaccharide and protein surface antigens in wild strains of group B streptococci.

December 1982, Zentralblatt fur Bakteriologie, Mikrobiologie und Hygiene. 1. Abt. Originale A, Medizinische Mikrobiologie, Infektionskrankheiten und Parasitologie = International journal of microbiology and hygiene. A, Medical microbiology, infectious...,

P Ferrieri

Identification of protein antigens of group B streptococci, with special reference to the Ibc antigens.

November 1984, The Journal of experimental medicine,

P Ferrieri

Extracellular antigens of serotype III group B streptococci.

December 1980, Infection and immunity,

P Ferrieri

Type-specific polysaccharide antigens of group B streptococci.

June 1966, The Journal of hygiene,

P Ferrieri

The Ibc protein fraction of group B streptococci: characterization of protein antigens extracted by HCL.

August 1981, Acta pathologica et microbiologica Scandinavica. Section B, Microbiology,