D103 - Lecture 9 - Cells In Their Environment.docx

5 Pages

Biological Sciences
Course Code
Grant Mac Gregor

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A. Clicker a. Interphase i. Nuclear lamina occurs at the edge of the nuclear envelope b. Phosphorylation of lamins to break apart nuclear membrane i. Mutation 1. Cells will not be able to segregate DNA b. Mutate serine to an alanine i. Dominant negative i. Prevent phosphorylation 1. Negative charge ii. Use glutamic acid or aspertate 1. Dominant active B. Extracellular matrix a. Basal lamina b. Collagen fibrils i. Determines the characteristics of the ECM 1. Rope-like - tendons 2. Transparent - cornea 3. Calcified - bone b. Created by the cells in the ECM i. Determines the characteristics of the ECM B. Basal Lamina a. Separates connective tissue from the cell layer b. Organization is cell specific i. Muscle all cells are surrounded ii. Blood Brain Barrier b. Laminin i. heterotrimer ii. Provides binding sites for a lot of
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