Mechanistic insights into ectodomain shedding: Susceptibility of CADM1 adhesion molecule is determined by alternative splicing and O-glycosylation

Kyoko Shirakabe, Takuya Omura, Yoshio Shibagaki, Emiko Mihara, Keiichi Homma, Yukinari Kato, Akihiko Yoshimura, Yoshinori Murakami, Junichi Takagi, Seisuke Hattori, Yoshihiro Ogawa

研究成果: Article

5 引用 (Scopus)

抄録

Ectodomain shedding (shedding) is a post-translational modification, which liberates the extracellular domain of membrane proteins through juxtamembrane processing executed mainly by the ADAM (a disintegrin and metalloprotease) family of metalloproteases. Because shedding alters characteristics of cells in a rapid and irreversible manner, it should be strictly regulated. However, the molecular mechanisms determining membrane protein susceptibility to shedding (shedding susceptibility) are largely unknown. Here we report that alternative splicing can give rise to both shedding-susceptible and shedding-resistant CADM1 (cell adhesion molecule 1) variant proteins. We further show that O-glycans adjacent to the shedding cleavage site interfere with CADM1 shedding, and the only 33-bp alternative exon confers shedding susceptibility to CADM1 by inserting five non-glycosylatable amino acids between interfering O-glycans and the shedding cleavage site. These results demonstrate that shedding susceptibility of membrane protein can be determined at two different levels of its biosynthesis pathway, alternative splicing and O-glycosylation.

元の言語English
記事番号46174
ジャーナルScientific Reports
7
DOI
出版物ステータスPublished - 2017 4 10

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Alternative Splicing
Cell Adhesion Molecules
Glycosylation
Membrane Proteins
Metalloproteases
Polysaccharides
Disintegrins
Post Translational Protein Processing
Exons
Amino Acids
Proteins

ASJC Scopus subject areas

  • General

これを引用

Mechanistic insights into ectodomain shedding : Susceptibility of CADM1 adhesion molecule is determined by alternative splicing and O-glycosylation. / Shirakabe, Kyoko; Omura, Takuya; Shibagaki, Yoshio; Mihara, Emiko; Homma, Keiichi; Kato, Yukinari; Yoshimura, Akihiko; Murakami, Yoshinori; Takagi, Junichi; Hattori, Seisuke; Ogawa, Yoshihiro.

:: Scientific Reports, 巻 7, 46174, 10.04.2017.

研究成果: Article

Shirakabe, K, Omura, T, Shibagaki, Y, Mihara, E, Homma, K, Kato, Y, Yoshimura, A, Murakami, Y, Takagi, J, Hattori, S & Ogawa, Y 2017, 'Mechanistic insights into ectodomain shedding: Susceptibility of CADM1 adhesion molecule is determined by alternative splicing and O-glycosylation', Scientific Reports, 巻. 7, 46174. https://doi.org/10.1038/srep46174
Shirakabe, Kyoko ; Omura, Takuya ; Shibagaki, Yoshio ; Mihara, Emiko ; Homma, Keiichi ; Kato, Yukinari ; Yoshimura, Akihiko ; Murakami, Yoshinori ; Takagi, Junichi ; Hattori, Seisuke ; Ogawa, Yoshihiro. / Mechanistic insights into ectodomain shedding : Susceptibility of CADM1 adhesion molecule is determined by alternative splicing and O-glycosylation. :: Scientific Reports. 2017 ; 巻 7.
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abstract = "Ectodomain shedding (shedding) is a post-translational modification, which liberates the extracellular domain of membrane proteins through juxtamembrane processing executed mainly by the ADAM (a disintegrin and metalloprotease) family of metalloproteases. Because shedding alters characteristics of cells in a rapid and irreversible manner, it should be strictly regulated. However, the molecular mechanisms determining membrane protein susceptibility to shedding (shedding susceptibility) are largely unknown. Here we report that alternative splicing can give rise to both shedding-susceptible and shedding-resistant CADM1 (cell adhesion molecule 1) variant proteins. We further show that O-glycans adjacent to the shedding cleavage site interfere with CADM1 shedding, and the only 33-bp alternative exon confers shedding susceptibility to CADM1 by inserting five non-glycosylatable amino acids between interfering O-glycans and the shedding cleavage site. These results demonstrate that shedding susceptibility of membrane protein can be determined at two different levels of its biosynthesis pathway, alternative splicing and O-glycosylation.",
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AU - Mihara, Emiko

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AU - Kato, Yukinari

AU - Yoshimura, Akihiko

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