Science Quiz / Amino Acids by side-chain

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QUIZ: Can you name the Amino Acids through these clues?

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Also try: Human Bones (A-Z)
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Side-ChainAmino AcidHint
hydroxy-methyl groupacts as neurotransmitter
Ethyl group and Methyl group linked via sulfur(Unmodified) Proteins always start with this amino acid
(2-methyl) propylMost common amino acid in nature
methyl imidazolePositively charged aromatic amino acid
1- hydroxy ethyl groupAlcohol group with two chiral centres
Methyl group bonded to carboxamideFirst amino acid isolated (from similarly named vegetable)
Ethanoic Acidcoded by GAU and GAC
Ethyl group bonded to carboxamideMost abundant free amino acid in human blood
Cyclic Propyl (bonded with non-side-chain amino group) Only secondary amine of amino acids. Does not form purple complex with ninhydrin.
methyl bonded to phenolNegatively charged aromatic amino acid
Side-ChainAmino AcidHint
Propanic AcidThis acids salts grant the taste of umami
(1-methyl) ethylSmallest atomic mass of any branched chain amino acids
MethiolThiol group very nucleophillic, forms disulfide bridges
propyl guanidiniumhighest acid disassociation constant of any amino acid, almost always positively charged
2- methyl indoleUsed as Flurescent probe
methyl bonded to benzylsimplest aromatic amino acid. Found in breast milk.
Methyl Simplest alpha amino acid
HydrogenNon-Chiral
(1-methyl) propylNon-polar and contains two chiral carbons
Butyl group bonded to amino groupIn Jurassic Park, the dinosaurs were unable to produce this amino acid, ensuring they would not survive outside the park (in reality humans can't synthesise ____ either)

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