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Amino Acids Study Guide (BIS102/MCAT)
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Amino Acids Study Guide (BIS102/MCAT) By Ioannis K BIS 102 tutor Name 3 -Āāāletter 1 -Āāāletter Glycine Gly G Mnemonics (with 1 letter codes) Alanine Ala A āGAVLIMPā = nonpolar/hydrophobic (hate H20) Valine Val V āWYFā sounds like (WIFE)= aromatic Leucine Leu L āSTQNCā sounds like (STICK-ĀāāNICK) = polar/hydrophilic (love H20) Isoleucine Ile I āEDā = acidic/negative charge Methionine Met M āHKRā sounds like (.......)= basic/positive charge Proline Pro P Tryptophan Trp W A Few Universal Factoids To Know Tyrosine Tyr Y 1) Which amino acid participates in disulfide bonds? Phenylalanine Phe F 2) Which structure (primary, secondary, tertiary, etc.) are Serine Ser S disulfide bonds a part of? Threonine Thr T 3) N-Āāāterminus vs. C-Āāāterminus + how to draw polypeptides Glutamine Gln Q 4) All biologically relevant AA have (L/D) chirality? Which Asparagine Asn N is the only achiral one? Cysteine Cys C 5) Ketogenic vs. Glucogenic amino acids (BIS103) Glutamate Glu E 6) Impact of Glycine and Proline on secondary structure? Aspartate Asp D i.e. their role as āhelix breakersā Histidine His H 7) Alcohol containing AA-Āāā (Ser, Thr, Tyr)-Āāā important Lysine Lys K because these are commonly phosphorylated (BIS103) Arginine Arg R 8) Which amino acids are likely to be found on the interior of a protein vs. exterior?