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A lysosome (/ ˈ l aɪ s ə ˌ s oʊ m /) is a single membrane-bound organelle found in many animal cells. [1] [2] They are spherical vesicles that contain hydrolytic enzymes that digest many kinds of biomolecules. A lysosome has a specific composition, of both its membrane proteins and its lumenal proteins.
CMA performs various specialized functions as well, depending on the specific protein undergoing degradation through this pathway and the cell type involved. For example, known CMA substrates include, MEF2D, a neuronal factor important for survival; Pax2, a transcription factor, important for the regulation growth of renal tubular cells; IκBα ...
Canine cancer detection is an approach to cancer screening that relies upon the claimed olfactory ability of dogs to detect, in urine or in breath, very low concentrations of the alkanes and aromatic compounds generated by malignant tumors. While some research has been promising, no verified studies by secondary research groups have ...
This glycoprotein provides selectins with carbohydrate ligands. It may play a role in tumor cell metastasis. It may also function in the protection, maintenance, and adhesion of the lysosome. Alternative splicing of the gene produces three variants - LAMP-2A, LAMP-2B and LAMP-2C. [5] LAMP-2A is the receptor for chaperone-mediated autophagy ...
Autophagy (or autophagocytosis; from the Greek αὐτόφαγος, autóphagos, meaning "self-devouring" [1] and κύτος, kýtos, meaning "hollow") [2] is the natural, conserved degradation of the cell that removes unnecessary or dysfunctional components through a lysosome-dependent regulated mechanism. [3]
However the significance of this localization is not known. Mature yeast autophagosomes fuse directly with vacuoles or lysosomes and do not form amphisomes as in mammals. [8] In yeast autophagosome maturation, there are also other known players as Atg1, Atg13 and Atg17. Atg1 is a kinase upregulated upon induction of autophagy.
Lysosomes are membrane-bound organelles that typically contain a broad spectrum of enzymes capable of hydrolytic deconstruction of polysaccharides, proteins, nucleic acids, lipids, phosphoric acyl esters, and sulfates. This process requires compartmentalization and segregation of enzymes and substrates via a single intracellular membrane that ...
Micrograph of paper autofluorescing under ultraviolet illumination. The individual fibres in this sample are around 10 μm in diameter.. Autofluorescence is the natural fluorescence of biological structures such as mitochondria and lysosomes, in contrast to fluorescence originating from artificially added fluorescent markers (fluorophores).