BIOL 205 Lecture Notes - Lecture 9: Membrane Transport Protein, Spindle Apparatus, Protein Kinase A
Document Summary
Helix - common structural motif of proteins in which a linear sequence of amino acids folds into a right-handed helix stabilized by internal hydrogen bonding between backbone atoms. Acetyl coa - small water-soluble molecule that carries acetyl groups in cells. Contains an acetyl group linked to coenzyme a (coa) by an easily hydrolyzable thioester bond. Acid - in the context of cell biology, an organic molecule that dissociates in water to generate hydronium (h3o+) ions (thereby producing a low ph). Actin filament - protein filament, about 7-nm wide, formed from a chain of globular actin molecules. A major constituent of the cytoskeleton of all eukaryotic cells and especially abundant in muscle cells. Action potential - rapid, transient, self-propagating electrical signal in the plasma membrane of a cell such as a neuron or muscle. Activated carrier - a small molecule used to carry energy or chemical groups in many different metabolic reactions.
