BIO 1540 Study Guide - Final Guide: Tonicity, Peripheral Membrane Protein, Ionic Strength
20 Feb 2015
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Bio1140 - cell biology - lecture notes - shivan desai. Lecture 5 - january 21, 2013 + lecture 6 january 24, 2013. Membrane proteins: membrane proteins, the mosaic" component of the fluid mosaic model, functions include. Attachment/recognition: 3 types: integral, peripheral, lipid-anchored. Proteins can be anchored to things inside and outside the cell and this causes them to not move around as well. These reactions could be hydrogen bonds, ionic bonds, sulfide reactions (disulfide bridge). We can identify proteins using these structures: when several polypeptide chains react with each other (4 for example) is called quaternary structure. Residues are found in a alpha helix conformation: because they are held by hydrophobic interactions they are held very solidly in the membrane; but they are still mobile and is moveable through lateral diffusion. Alpha helix is a secondary structure; where a part of a protein gives a formation of the structure.
