title: Factor B reference typing report.
abstract: In a factor B (BF) Reference Typing of the VIth Complement Genetics Workshop and Conference, Mainz, FRG, 1989, 99 samples from 13 laboratories, including 18 families, were investigated with the majority of presently known typing procedures. Among the major ('standard') allotypes BF SO4 was found to be new. For the group of common BF F subtypes samples from 11 laboratories including complete family data from 5 laboratories were compared. The subtypes BF FA and FB were recognized and confirmed to be identical in the samples from all groups. Within a third group rare subtype variants of F and S were compared and characterized. In samples submitted from individuals with assumed non-expressed (BF*QO) alleles unexpected and hypomorphic gene products were seen. The investigation of DNA samples for restriction fragment length polymorphisms from the same set of individuals revealed a correlation of the Msp I 0.7-kb fragment with BF F, and confirmed the correlation of a Taq I 6.6-kb fragment with BF FA.
authors.affiliation: Institut für Gerichtliche Medizin, Humboldt-Universität, Berlin, FRG.
authors.forename: G
authors.initials: G
authors.lastname: Geserick
authors.forename: M
authors.initials: M
authors.lastname: Abbal
authors.forename: M
authors.initials: M
authors.lastname: Brenden
authors.forename: M
authors.initials: M
authors.lastname: Braun-Stilwell
authors.forename: G
authors.initials: G
authors.lastname: Mauff
authors.forename: H
authors.initials: H
authors.lastname: Schröder
authors.forename: I
authors.initials: I
authors.lastname: Siemens
mesh_terms: D000483:Alleles; D001788:Blood Grouping and Crossmatching; D011415:Complement Factor B / Q000235:genetics* / Q000302:isolation & purification; D019003:Deoxyribonuclease HpaII; D015252:Deoxyribonucleases, Type II Site-Specific; D014644:Genetic Variation; D006801:Humans; D012150:Polymorphism, Restriction Fragment Length; D012016:Reference Values
chemical_list: D019003:Deoxyribonuclease HpaII; D015252:Deoxyribonucleases, Type II Site-Specific; C027046:TCGA-specific type II deoxyribonucleases; D011415:Complement Factor B