Abstract:
:Pentamannose 6-phosphate/trilysine substituted aprotinin (PMP-lys-aprotinin) and insulin like growth factor II (IGF II) were used as affinity ligands for the mannose 6-phosphate (M6P) and IGF II binding sites of the M6P/IGF II receptor. Both ligands were cross linked to intact receptor and tryptic fragments of the receptor. The pattern of receptor fragments with M6P and IGF II binding sites differed indicating that the two binding sites are located on different segments of the receptor. The receptor was incubated with [125I]IGF II and pentamannose 6-phosphate substituted bovine serum albumin (PMP-BSA). From these mixtures [125I]IGF II receptor complexes could be precipitated with antibodies against the PMP-BSA indicating that the M6P/IGF II receptor can bind simultaneously IGF II and M6P-containing ligands.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Waheed A,Braulke T,Junghans U,von Figura Kdoi
10.1016/s0006-291x(88)80419-4subject
Has Abstractpub_date
1988-05-16 00:00:00pages
1248-54issue
3eissn
0006-291Xissn
1090-2104pii
S0006-291X(88)80419-4journal_volume
152pub_type
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