Carbohydrate recognition by the mannose-6-phosphate receptors
نویسندگان
چکیده
منابع مشابه
The N-terminal carbohydrate recognition site of the cation-independent mannose 6-phosphate receptor.
The 300-kDa cation-independent mannose 6-phosphate receptor (CI-MPR) plays a critical role in the trafficking of newly synthesized mannose 6-phosphate-containing acid hydrolases to the lysosome. The receptor contains two high affinity carbohydrate recognition sites within its 15-domain extracytoplasmic region, with essential residues for carbohydrate recognition located in domain 3 and domain 9...
متن کاملAn ELISA method to quantify the mannose 6-phosphate receptors.
Mannose 6-phosphate receptor proteins mediate transport of lysosomal enzymes to lysosomes in eukaryotes. Two receptors designated as MPR 300 and MPR 46 based on their apparent molecular mass have been well studied from human and bovine liver. In humans, it has been shown that the receptors are present in different concentrations in different tissues. In the present study, MPR 300 and MPR 46 wer...
متن کاملMammalian GGAs act together to sort mannose 6-phosphate receptors
The GGAs (Golgi-localized, gamma ear-containing, ADP ribosylation factor-binding proteins) are multidomain proteins implicated in protein trafficking between the Golgi and endosomes. We examined whether the three mammalian GGAs act independently or together to mediate their functions. Using cryo-immunogold electron microscopy, the three GGAs were shown to colocalize within coated buds and vesic...
متن کاملIdentification of mannose 6-phosphate receptors in rabbit alveolar macrophages.
Mannose 6-phosphate is an important recognition site involved in transport of newly synthesized lysosomal enzymes from the endoplasmic reticulum to lysosomes. The current study is the first demonstration of functional mannose phosphate receptors in macrophages. The receptor appears to be similar in many respects to that expressed in fibroblasts. Binding at 4 degrees C of a mannose-6-P-containin...
متن کاملEnzyme therapy in mannose receptor-null mucopolysaccharidosis VII mice defines roles for the mannose 6-phosphate and mannose receptors.
Enzyme replacement therapy (ERT) is available for several lysosomal storage diseases. Except for Gaucher disease, for which an enzyme with exposed mannosyl residues targets mannose receptors (MR) on macrophages, ERT targets primarily the mannose 6-phosphate receptor (MPR). Most recombinant lysosomal enzymes contain oligosaccharides with both terminal mannosyl and mannose 6-phosphate residues. E...
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ژورنال
عنوان ژورنال: Current Opinion in Structural Biology
سال: 2009
ISSN: 0959-440X
DOI: 10.1016/j.sbi.2009.09.002