BIOLOGY 151 Lecture Notes - Lecture 5: Blastocyst
21 Dec 2015
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Bio151 lecture 5 signal transduction and stem cells. If an organism or a cell needs to stop signaling in the stem cell self-renewal pathway what could it do: phosphatases, receptor endocytosis, receptor inhibition, suppressing the signal, ubiquitin. The cell membrane pinches inward and encloses the receptors that no longer need to be used. The coated vesicle then travels inside the cell, making way to the cell"s disposal center . Another protein, substrate, etc. , can bind to the receptor to prevent the signal from getting to the receptor. Ubiquitin is a small protein that gets attached to a disposable protein. Ubiquitin ligase the protein that brings the disposable protein to the proteasome: it is activated by ubiquitin. Proteasome a protein that grinds the target protein. This diagram below shows all the differentiations in human cell lines. Remember this is what"s going on and the stem cell is going to divide and the.
