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Báo cáo khoa học: The N-linked oligosaccharides of aminopeptidase N from Manduca sexta

Chia sẻ: Nguyen Thang | Ngày: | Loại File: PDF | Số trang:18

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Mass spectrometric studies on the N-linked glycans of aminopeptidase 1 from Manduca sextahave revealed unusual structures not previously observed on any insect glycoprotein. Structure elucidation of these oligosaccha-rides was carried out by high-energy collision-induced dissociation (CID) using a matrix-assisted laser desorp-tion/ionization time-of-flight/time-of-flight (MALDI-TOF/ TOF) tandem mass spectrometer. These key experiments revealed that three out of the four N-linked glycosylation sites in this protein (Asn295, Asn623 and Asn752) are occupied with highly fucosylated N-glycans that possess unusual difucosylated cores. ...

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Nội dung Text: Báo cáo khoa học: The N-linked oligosaccharides of aminopeptidase N from Manduca sexta

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