Cloning and characterization of the murine GPI anchor synthesis gene Pigf, a homologue of the human PIGF gene.
Many eukaryotic proteins are bound to the plasma membrane via a glycosylphosphatidylinositol (GPI) anchor. Its core backbone, which is conserved in different organisms, is synthesized in the endoplasmic reticulum by the sequential addition of glycan components to phosphatidylinositol. One of the human GPI synthesis genes, PIGF (phosphatidylinositol glycan complementation class F), which is involved late in the synthesis pathway, has been cloned. In this study, we isolated complementary and genomic clones of Pigf, a murine counterpart of PIGF. Pigf encodes a 219 amino acid protein that complements a class F mutation. The Pigf gene consists of six exons spanning 30 kb and was mapped to chromosome 17 at 17E4-E5. These features are very similar to PIGF, thus demonstrating the interspecies conservation of structure, function, gene organization, and genetic locus between these GPI synthesis genes. The results also extend a region in murine distal chromosome 17 that is syntenic to human chromosome 2p16-p22.
Ohishi
K
K
Department of Immunoregulation, Research Institute for Microbial Diseases, Osaka University, Osaka, 565, Japan.
Kurimoto
Y
Y
Inoue
N
N
Endo
Y
Y
Takeda
J
J
Kinoshita
T
T
D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D002874:Chromosome Mapping; D002889:Chromosomes, Human, Pair 2; D003001:Cloning, Molecular; D017124:Conserved Sequence; D017931:DNA Primers; D018076:DNA, Complementary; D005091:Exons; D015723:Gene Library; D015698:Genomic Library; D017261:Glycosylphosphatidylinositols / Q000096:biosynthesis*; D006801:Humans; D008099:Liver / Q000378:metabolism; D008297:Male; D008565:Membrane Proteins; D051379:Mice; D008810:Mice, Inbred C57BL; D008969:Molecular Sequence Data; D016133:Polymerase Chain Reaction; D014176:Protein Biosynthesis; D011506:Proteins / Q000737:chemistry / Q000235:genetics*; D019105:Random Amplified Polymorphic DNA Technique; D015183:Restriction Mapping; D017386:Sequence Homology, Amino Acid; D013737:Testis / Q000378:metabolism
D017931:DNA Primers; D018076:DNA, Complementary; D017261:Glycosylphosphatidylinositols; D008565:Membrane Proteins; C098069:PIGF protein, human; C490827:Pigf protein, mouse; D011506:Proteins