AMME1362 Lecture Notes - Lecture 5: Ferritin, Hemoglobin, Myoglobin
17 Oct 2018
School
Department
Course
Professor
Document Summary
A molecule composed of polymers of amino acids joined together by peptide bonds. It can be distinguished from fats and carbohydrates by containing nitrogen. Polypeptide chains folded into spherical or globular form. Diverse functions; form enzymes, hormones, amino acids moves molecules from one place to another. Contraction of muscle fibers, vesicle transport in cytoplasm. Storage storage of amino acids and metal ions. Polar amino acids with negative acids: non-polar amino acids have equal number of amino and carboxyl groups and are neutral. These amino acids are hydrophobic and have no charge on the "r" group: two types: aliphatic, aromatic. Aliphatic molecules have carbon atoms in straight line or open branches, while aromatic is where it is in circular arrangements: polar amino acids no (cid:272)harge o(cid:374) (cid:858) (cid:859) group. A permanent, heritable change in the nucleotide sequence in a gene or a chromosome.
