Positional cloning and molecular characterization of an immunodominant cytotoxic determinant of the mouse H3 minor histocompatibility complex.
Immune responses to minor histocompatibility antigens are poorly understood and present substantial barriers to successful solid tissue and bone marrow transplantation among MHC-matched individuals. We exploited a unique positional cloning approach relying on the potent negative selection capability of cytotoxic T cells to identify the H3a gene responsible for immunodominant H2-Db-restricted determinants of the classically defined mouse autosomal H3 complex. The allelic basis for reciprocal H3a antigens is two amino acid changes within a single nonamer H2-Db-binding peptide. The H3a gene, now called Zfp106, encodes a 1888-amino acid protein with three zinc fingers and a beta-transducin domain consistent with DNA/protein binding. A region of ZFP106 is identical to a 600-amino acid sequence implicated in the insulin receptor signaling pathway.
Zuberi
A R
AR
The Jackson Laboratory, Bar Harbor, Maine 04609, USA.
Christianson
G J
GJ
Mendoza
L M
LM
Shastri
N
N
Roopenian
D C
DC
D048868:Adaptor Proteins, Signal Transducing; D000483:Alleles; D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D002154:Calpain / Q000235:genetics; D002874:Chromosome Mapping; D003001:Cloning, Molecular; D004268:DNA-Binding Proteins / Q000235:genetics; D016056:Immunodominant Epitopes / Q000235:genetics*; D019656:Loss of Heterozygosity; D051379:Mice; D008810:Mice, Inbred C57BL; D015778:Minor Histocompatibility Antigens / Q000235:genetics* / Q000276:immunology*; D008912:Minor Histocompatibility Loci / Q000235:genetics*; D008969:Molecular Sequence Data; D009124:Muscle Proteins; D010446:Peptide Fragments / Q000235:genetics; D017386:Sequence Homology, Amino Acid; D012689:Sequence Homology, Nucleic Acid; D013602:T-Lymphocytes, Cytotoxic / Q000502:physiology
D048868:Adaptor Proteins, Signal Transducing; D004268:DNA-Binding Proteins; D016056:Immunodominant Epitopes; D015778:Minor Histocompatibility Antigens; D009124:Muscle Proteins; D010446:Peptide Fragments; C116200:Zfp106 protein, mouse; D002154:Calpain; C491373:Capn3 protein, mouse