Niemann-Pick type C 1 function requires lumenal domain residues that mediate cholesterol-dependent NPC2 binding
نویسندگان
چکیده
منابع مشابه
Niemann-Pick type C disease.
A 4-year-old Afghan girl born to consanguineous parents presented with progressive neurological regression and hepatomegaly noticed after one year of age. The child had hypotonia, repeated unexplained falls and facial dyskinesia. Bone marrow examination revealed presence of storage cells suggestive of Gauchers or Niemann Pick. Confirmatory study by lysosomal enzyme from leucocytes was normal fo...
متن کامل[Niemann-Pick disease (type C)].
A 15-year old girl with slowly progressive gait and speech disorders, and with impairment of mental ability, is decsribed. The disease appeared 18 months before the first hospitalization at the Department of Neurology and Physchiatry for Children and Young People. Neurological and other examinations confirmed extrapyramidal and cerebellar signs, conspisuous knee and ankle reflexes, marked splen...
متن کاملNiemann-Pick disease type C
Niemann-Pick disease type C (NPC) is an autosomal recessive neurovisceral lipid storage with a wide spectrum of clinical phenotypes. At the cellular level, the disorder is characterized by accumulation of unesterified cholesterol and glycolipids in the lysosomal/late endosomal system. Approximatively 95% of patients have mutations in the NPC1 gene (mapped at 18q11) which encodes a large membran...
متن کاملDefective endocytic trafficking of NPC1 and NPC2 underlying infantile Niemann-Pick type C disease.
Niemann-Pick type C (NPC) disease is a fatal recessively inherited lysosomal cholesterol-sphingolipidosis. Mutations in the NPC1 gene cause approximately 95% of the cases, the rest being caused by NPC2 mutations. Here the molecular basis of a severe infantile form of the disease was dissected. The level of NPC1 protein in the patient fibroblasts was similar to that in control cells. However, th...
متن کاملBinding between the Niemann-Pick C1 protein and a photoactivatable cholesterol analog requires a functional sterol-sensing domain.
Niemann-Pick type C (NPC) 1 protein plays important roles in moving cholesterol and other lipids out of late endosomes by means of vesicular trafficking, but it is not known whether NPC1 directly interacts with cholesterol. We performed photoaffinity labeling of intact cells expressing fluorescent protein (FP)-tagged NPC1 by using [(3)H]7,7-azocholestanol ([(3)H]AC). After immunoprecipitation, ...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 2011
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.1110439108