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http://repositorio.pediatria.gob.mx:8180/handle/20.500.12103/1248| Título : | 78 kDa receptor for Man6P-independent lysosomal enzyme targeting: Biosynthetic transport from endoplasmic reticulum to “high-density vesicles” |
| Creador: | González Noriega A |
| Nivel de acceso: | Open access |
| Palabras clave : | Cloruro de Amonio - uso terapéutico Gradiente de Densidad -instrumentación Retículo Endoplásmico - enzimología Retículo Endoplásmico - metabolismo Centrifugación por Gradiente de Densidad -instrumentación Hepatocitos - enzimología Hepatocitos - metabolismo Lisosomas - enzimología Lisosomas - metabolismo Manosafosfatos - metabolismo Transporte de Proteína - fisiología Receptor IGF Tipo 2 - biosíntesis Receptor IGF Tipo 2 - química - Receptor IGF Tipo 2 - metabolismo Endosomas - enzimología Endosomas - metabolismo Ammonium Chloride - therapeutic use Cell Line Centrifugation, Density Gradient - intrumentation Endoplasmic Reticulum - enzymology Endoplasmic Reticulum -metabolism Hepatocytes -enzymology Hepatocytes - metabolism Intracellular Fluid -metabolism Lysosomes - enzymology Lysosomes - metabolism Mannosephosphates - metabolism Protein Transport - physiology Receptor, IGF Type 2 -biosynthesis Receptor, IGF Type 2 - chemistry Receptor, IGF Type 2 -metabolism Endosomes - enzymology Endosomes - metabolism Manosa-6-fosfato-independient focalización Manosa receptor 6-fosfato 78 kDa del receptor lisosómica fraccionamiento subcelular tráfico intracelular Mannose 6-phosphate-independient targeting Mannose 6-phosphate receptor 78 kDa receptor Lysosomal targeting Subcellular fractionation Intracellular trafficking |
| Descripción : | Recent work has shown that the cation-independent mannose 6-phosphate and the 78 kDa receptors for lysosomal enzyme targeting are located in different cell compartments. While the mannose 6-phosphate receptor is enriched in the Percoll fractions that contain Golgi apparatus, most of the 78 kDa receptor is localized in a heavy fraction at the bottom of the Percoll gradient. This report presents the biosynthetic transport of the 78 kDa receptor. Newly synthesized 78 kDa receptor was transported to Golgi from endoplasmic reticulum with a half life of 5 min. From the Golgi apparatus, the receptor takes two routes; about 15–25% is transported to the plasma membrane, and the rest migrates to late endosomes, subsequently to prelysosomes and finally to the dense vesicles. The 78 kDa receptor starts appearing at the dense vesicles 120 min after biosynthesis and reaches a maximum of 40–50% of the total receptor. Treatment of cells with NH4Cl causes depletion of the receptor from the dense vesicles and prelysosomes and corresponding augmentation in endosomes and plasma membrane. These results suggest that the 78 kDa receptor cycles between compartments and that the dense vesicles seem to represent the most distal compartment in the biosynthetic pathway of this receptor |
| Colaborador(es) u otros Autores: | González-Noriega A Ortega Cuellar Dd Michalak C |
| Fecha de publicación : | 2006 |
| Tipo de publicación: | Artículo |
| Formato: | |
| Identificador del Recurso : | 10.1016/j.yexcr.2005.12.019 |
| Fuente: | Exp Cell Res 312(7):1065-1078 |
| URI : | http://repositorio.pediatria.gob.mx:8180/handle/20.500.12103/1248 |
| Idioma: | eng |
| Aparece en las colecciones: | Artículos |
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