Characterization of the complex of the lysosomal membrane transporter MFSD1 and its accessory subunit GLMP
Characterization of the complex of the lysosomal membrane transporter MFSD1 and its accessory subunit GLMP
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溶酶体膜转运蛋白 MFSD1 及其辅助亚基 GLMP 复合物的表征
DOI:
10.1096/fj.202000912rr
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
M. Damme
中科院分区:
文献类型:
--
作者:
Massa Lopez;L. Kahlau;K. E. J. Jungnickel;C. Low;M. Damme
The two lysosomal integral membrane proteins MFSD1 and GLMP form a tight complex that confers protection of both interaction partners against lysosomal proteolysis. We here refined the molecular interaction of the two proteins and found that the luminal domain of GLMP alone, but not its transmembrane domain or its short cytosolic tail, conveys protection and mediates the interaction with MFSD1. Our data support the finding that the interaction is essential for the stabilization of the complex. These results are complemented by the observation that N‐glycosylation of GLMP in general, but not the type of N‐glycans (high‐mannose‐type or complex‐type) or individual N‐glycan chains, are essential for protection. We observed that the interaction of both proteins already starts in the endoplasmic reticulum, and quantitatively depends on each other. Both proteins can affect vice versa their intracellular trafficking to lysosomes in addition to the protection from proteolysis. Finally, we provide evidence that MFSD1 can form homodimers both in vitro and in vivo. Our data refine the complex interplay between an intimate couple of a lysosomal transporter and its accessory subunit.
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DOI:
10.1016/s0021-9258(18)66630-x
发表时间:
1986
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
J. G. Barriocanal;Juan;Bonifacino;Lydia Yuan;Ignacio;Sandoval
通讯作者:
Sandoval
DOI:
--
发表时间:
1990
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Carlsson,SR;Fukuda,M
通讯作者:
Fukuda,M
影响因子:
4.1
作者:
O. Schieweck;M. Damme;B. Schröder;A. Hasilik;B. Schmidt;T. Lübke
通讯作者:
T. Lübke
影响因子:
4.8
作者:
Fettelschoss, Victoria;Burda, Patricie;Baumgartner, Matthias R.
通讯作者:
Baumgartner, Matthias R.
影响因子:
3.1
作者:
Park EM;Park SW;Lee YJ;Lee WJ;Choi W
通讯作者:
Choi W