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Bio1710Ex2
UNT Biology 1710 Dewey EX2
Question | Answer |
---|---|
Proteins | Do the work of the cell |
Protein Enzyme catalysts | - Speed up chemical reactions |
Most Enzymes are | Proteins |
Protein Defense | - Antibodies, immune systems |
Protein Transporting | - Creating systems that allow organisms to move |
Protein Support | - Support Cell membrane |
Protein Regulation | - Controls or regulates systems in body or cell |
Protein Storage | - Store different Macro-Molecules, nutrients, water, etc |
Protein Polymers | -Composed of 1 or more long, unbranched chain |
Chain | - Polypeptide |
Monomers | - Amino Acids |
Amino Acid Structures (5) | 1. Central Carbon atom 2. Amino group 3. Carboxyl group 4. Single Hydrogen 5. Variable R group |
Are R groups the same in Amino Acids? | No. They vary from acid to acid. |
Amino acids joined by: | Dehydration synthesis |
Peptide bond | Amino acids joined by dehydration synthesis |
Where do Amino Acids come from? | -We get them in our diet - You can also biosynthesize most from other compounds in a complex array of metabolic pathways |
PKU | Phenylketonuria |
Phenylketonuria | - Rare genetic metabolic disorder - Patients lack enzyme necessary to metabolize the amino acid phenylalanine - Phen. accumulates and is converted to phenylpyruvate which causes brain damage, mental retardation, seizures |
4 Levels of Structure for Proteins | 1. Primary 2. Secondary 3. Tertiary 4. Quaternary |
Protein Primary structure | - sequence of Amino Acids |
Protein Secondary Structure | - Interaction of groups in the peptide backbone |
Alpha Helix | - no R-types participate in the structure - Hydrogen bonds keeping helix together |
Beta Sheet | Hydrogen bonds through the peptide backbone |
Protein Tertiary Structure | - Final folded shape of a globular protein |
Quaternary structure | - Only if you have a protein made of only 1 sub-unit - subunits in a protein with 2 or more polypeptide chains |
Sub-units | - arrangement of individual chains |