BIOS 1700 Lecture Notes - Lecture 39: Inner Cell Mass, Embryonic Stem Cell, Gastrulation
6 Dec 2016
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Translation can be regulated: 5" cap and poly a tail play a role in protection and translation initiation, 3" and 5" utr are important for regulation. These regions contain no protein sequencing information. Rna or other regulatory proteins: some have a signal for a speci c location in a cell, newly synthesized proteins must be properly modi ed and sorted to right cellular compartments. Post transitional modi cations: histones are modi ed by methylation and acetylation, degradation gets rid of proteins after they are used. Some proteins malfunction or denature in cells and they must be removed so they don"t cause diseases like alzheimer"s. !1: fertilization to zygote to two-cell stage to four-cell stage to morula to blastocystst to. Totipotent: ability to become any tissues to produce a complete or complex organism. Includes: supportive tissues/organs in mammals such as the placenta. Blastocyst: contains two distinct cell types:
