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Proc Natl Acad Sci U S A. 1987 Aug;84(16):5575-9.

Cloning of a cDNA encoding the human cation-dependent mannose 6-phosphate-specific receptor.


Complementary DNA clones for the human cation-dependent mannose 6-phosphate-specific receptor have been isolated from a human placenta library in lambda gt11. The nucleotide sequence of the 2463-base-pair cDNA insert includes a 145-base-pair 5' untranslated region, an open reading frame of 831 base pairs corresponding to 277 amino acids (Mr = 30,993), and a 1487-base-pair 3' untranslated region. The deduced amino acid sequence is colinear with that determined by amino acid sequencing of the N-terminus peptide (41 residues) and nine tryptic peptides (93 additional residues). The receptor is synthesized as a precursor with a signal peptide of 20 amino acids. The hydrophobicity profile of the receptor indicates a single membrane-spanning domain, which separates an N-terminal region containing five potential N-glycosylation sites from a C-terminal region lacking N-glycosylation sites. Thus the N-terminal (Mr = 18,299) and C-terminal (Mr less than or equal to 7648) segments of the mature receptor are assumed to be exposed to the extracytosolic and cytosolic sides of the membrane, respectively. Analysis of a panel of somatic cell (mouse-human) hybrids shows that the gene for the receptor is located on human chromosome 12.

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