Amino Acids by side-chain

Can you name the Amino Acids through these clues?

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Side-ChainAmino AcidHint
Methyl Simplest alpha amino acid
(1-methyl) propylNon-polar and contains two chiral carbons
Cyclic Propyl (bonded with non-side-chain amino group) Only secondary amine of amino acids. Does not form purple complex with ninhydrin.
MethiolThiol group very nucleophillic, forms disulfide bridges
Ethanoic Acidcoded by GAU and GAC
methyl bonded to phenolNegatively charged aromatic amino acid
Ethyl group and Methyl group linked via sulfur(Unmodified) Proteins always start with this amino acid
1- hydroxy ethyl groupAlcohol group with two chiral centres
Ethyl group bonded to carboxamideMost abundant free amino acid in human blood
methyl imidazolePositively charged aromatic amino acid
Side-ChainAmino AcidHint
hydroxy-methyl groupacts as neurotransmitter
Methyl group bonded to carboxamideFirst amino acid isolated (from similarly named vegetable)
methyl bonded to benzylsimplest aromatic amino acid. Found in breast milk.
(2-methyl) propylMost common amino acid in nature
2- methyl indoleUsed as Flurescent probe
Propanic AcidThis acids salts grant the taste of umami
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)
(1-methyl) ethylSmallest atomic mass of any branched chain amino acids
propyl guanidiniumhighest acid disassociation constant of any amino acid, almost always positively charged
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Last Updated: Feb 16, 2017

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