Defects in lysosomal trafficking [DS:H02128] Lysosomal storage disease [DS:H01425]
Description
Mucolipidosis type II, also known as I-cell disease, is an autosomal recessive lysosomal storage disorder caused by the deficiency of N-acetylglucosamine-1-phosphate transferase which is multimeric enzyme involved in phosphotransfer of UDP-N-acetylglucosamine to lysosomal enzymes (glycoproteins). It is the necessary process for the transport of newly synthesized lysosomal proteins to the lysosomes.
Category
Inherited metabolic disorder, Lysosomal disease
Brite
Human diseases in ICD-11 classification [BR:br08403]
05 Endocrine, nutritional or metabolic diseases
Metabolic disorders
Inborn errors of metabolism
5C56 Lysosomal diseases
H00143 Mucolipidosis II
Mucolipidosis II (I-cell disease) and mucolipidosis IIIA (classical pseudo-hurler polydystrophy) are caused by mutations in the GlcNAc-phosphotransferase alpha / beta -subunits precursor gene.