NUTR 33000 Study Guide - Midterm Guide: Krypto, Glutenin, Digestion
17 Oct 2016
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Proteins & amino acids: percent error for subject 1: Astrand bike test: 42. 2 58. 2/58. 2 = 27. 5% Side group: (cid:449)hat dete(cid:396)(cid:373)i(cid:374)es the type (cid:862)r(cid:863) g(cid:396)oup. Characteristics: non polar, can be branched but not a true ring. Imino: as another n bound to a c. Examples: alanine, glycine, isoleucine, leucine, proline, valine. Characteristics: non-polar, rings (phenyl rings), planar in shape (flat) Characteristics: important in hydrogen bonds and reactions. Characteristics: influences flavor, reactions and hydrogen bonds, overall charge. Isoelectric point: ph at which proteins loses average charge and often falls out of solution. Examples: aspartate, glutamate (aspartic acid and glutamic acid) Characteristics: influences flavor, reactions, hydrogen bonds, overall charge. Secondary structure: how these amino acids shape the polypeptide chain. Tertiary structure: how the alpha helices and beta sheets as well unstructured regions form 3d shapes. Quaternary structure: how the 3d subunits (folded) come together. Alpha helix: chiral (left or right handed) Examples: myosin, epidermin, fibrinogen, heep"s (cid:449)ool.
