primary lysosome
A lysosome before it has fused with a vesicle or vacuole.

Dictionary of molecular biology. 2004.

Look at other dictionaries:

  • primary lysosome — a lysosome that has not yet fused with a phagosome or pinosome …   Medical dictionary

  • Lysosome — An organelle (a little organ) within a cell containing enzymes that degrade macromolecules (large molecules) and other materials (such as bacteria) taken up by a cell during the process of endocytosis. In endocytosis, macromolecules and particles …   Medical dictionary

  • lysosome — Membrane bounded cytoplasmic organelle containing a variety of hydrolytic enzymes that can be released into a phagosome or to the exterior. Release of lysosomal enzymes in a dead cell leads to autolysis (and is the reason for hanging game, to… …   Dictionary of molecular biology

  • lysosome-phagosome fusion — A process that occurs after the internalisation of a primary phagosome. Fusion of the membranes leads to the release of lysosomal enzymes into the phagosome. Some species of intracellular parasite evade immune responses by interfering with this… …   Dictionary of molecular biology

  • secondary lysosome — a primary (or another secondary) lysosome that has fused with a phagosome or pinosome, bringing hydrolases in contact with the ingested material and resulting in digestion of the material. See also autophagy (def. 2) and heterophagy …   Medical dictionary

  • secondary lysosome — Term used to describe intracellular vacuoles formed by the fusion of lysosomes with organelles (autosomes) or with primary phagosomes. Residual bodies are the remnants of secondary lysosomes containing indigestible material …   Dictionary of molecular biology

  • protolysosome — Primary lysosome that has not been involved in fusion with another vesicle or in digestive activity …   Dictionary of molecular biology

  • autophagolysosome — The digestive vacuole of autophagy that results from the fusion of a primary lysosome with an autophagic vacuole. * * * au·to·phago·ly·so·some (aw″to fag″ə liґsə sōm) autolysosome …   Medical dictionary

  • autolysosome — au·to·ly·so·some (aw″to liґso sōm) an organelle, formed by the fusion of an autophagosome with a primary lysosome, in which digestion of intracellular elements occurs in autophagy. Called also autophagolysosome …   Medical dictionary

  • autophagosome — au·to·phago·some (aw″to fagґə sōm) [auto + phagosome] an intracytoplasmic vacuole containing elements of the cell s own cytoplasm, formed by macroautophagy; it fuses with a primary lysosome to form an autolysosome, subjecting its… …   Medical dictionary

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