MFSD12 mediates the import of cysteine into melanosomes and lysosomes.
MFSD12 mediates the import of cysteine into melanosomes and lysosomes.
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DOI:
10.1038/s41586-020-2937-x
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发表时间:
2020-12
期刊:
影响因子:
64.8
通讯作者:
Sabatini DM
中科院分区:
文献类型:
--
作者:
Adelmann CH;Traunbauer AK;Chen B;Condon KJ;Chan SH;Kunchok T;Lewis CA;Sabatini DM
Dozens of genes contribute to the vast variation in human pigmentation. Many of these encode proteins that localize to the melanosome, the lysosome-related organelle that synthesizes pigment, but have unclear functions . Here, we describe the MelanoIP method for rapidly isolating melanosomes and profiling their labile metabolite contents. We use it to study MFSD12, a transmembrane protein of unknown molecular function that when suppressed causes darker pigmentation in mice and humans . We find that MFSD12 is required to maintain normal levels of cystine, the oxidized dimer of cysteine, in melanosomes, and to produce cysteinyldopas, the precursors of pheomelanin synthesis made in melanosomes via cysteine oxidation . Tracing and biochemical analyses show that MFSD12 is necessary for the import of cysteine into melanosomes, and, in non-pigmented cells, lysosomes. Indeed, loss of MFSD12 reduced the accumulation of cystine in lysosomes of fibroblasts from patients with cystinosis, a lysosomal storage disease caused by inactivation of the lysosomal cystine exporter CTNS (Cystinosin). Thus, MFSD12 is an essential component of the long-sought cysteine importer for melanosomes and lysosomes.
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影响因子:
9.8
作者:
Kawaji H;Kasukawa T;Forrest A;Carninci P;Hayashizaki Y
通讯作者:
Hayashizaki Y
影响因子:
4.4
作者:
Basrur, V;Yang, F;Appella, E
通讯作者:
Appella, E
影响因子:
56.9
作者:
GAHL, WA;BASHAN, N;SCHULMAN, JD
通讯作者:
SCHULMAN, JD
DOI:
10.1016/0005-2736(73)90114-4
发表时间:
1973-01-01
期刊:
BIOCHIMICA ET BIOPHYSICA ACTA
影响因子:
--
作者:
GOLDMAN, R;KAPLAN, A
通讯作者:
KAPLAN, A
DOI:
10.1111/j.1600-0749.1999.tb00502.x
发表时间:
1999-02-01
期刊:
PIGMENT CELL RESEARCH
影响因子:
--
作者:
Potterf, SB;Virador, V;Hearing, VJ
通讯作者:
Hearing, VJ