Memorize The 20 Amino Acids - The Easy Way! 

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just wanted to share a way of memorising these amino acids that i found a while ago. 1) first memorise the 5 well known aliphatic amino acids in order of complexity: Glycine, Alanine, Valine, Leucine and then Isoleucine. 2) now, remember the sequence 4-3-2-1 and observe this sequence down the list in the following: Lysine= -(CH2)4-NH2 Arginine= -(CH2)3-NH-C(NH2)=NH Methionine= -(CH2)2-S-CH3 Cysteine= -(CH2)-SH 3) Also, recall the "kinda-alcohol duplicates" of Methionine and Cysteine Threonine= -CH(OH)-CH3 Serine= -(CH2)-OH 4) now, observe how "A" comes wayy before "G" in english alphabet and how "1" comes before "2" Aspartic Acid= -(CH2)-COOH Glutamic Acid= -(CH2)2-COOH Asparagine= -(CH2)-CONH2 Glutamine= -(CH2)2-CONH2 5) Now, we get down the aromatic amino acids. -CH2-(C6H5)= Phenyl Alanine Add an -(OH) group to the para position, and we have =Tyrosine Now, instead of a benzene ring, attach a -(benzopyrrole) to alanine and, we have= Tryptophan If you attach an -(imidazole) to alanine, we get= Histidine 6) The last one is the only secondary amino acid, which is Proline and easy to draw

Dropping this for later: 1:38 Gly 2:00 Ala 3:15 Val 4:00 Leu 4:42 Ile 5:17 Ser 6:02 Thr 7:00 Cys 7:53 Met 8:50 Asp 9:54 Glu 10:35 Asn 12:12 Gln 12:50 Lys 14:05 Arg 15:18 Phe 16:55 Tyr 18:03 Pro 19:43 His 21:24 Trp

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Thank you so much for this! I was scratching my head an entire night; the order of the amino acids in my lecture notes are just alphabetical according to the one letter codes which doesn't make any sense for remembering the structures. I love how you ordered them so its easier to remember which ones contain a similar component etc ◡̈

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1:35 Glycine 1:59 Alanine 3:09 Valine 3:52 Leucine 4:29 Isoleucine 5:10 Serine 5:56 Threonine 6:53 Cysteine 7:43 Methionine 8:43 Aspartate 9:34 Glutamate 10:25 Asparagine 11:55 Glutamine 12:43 Lysine 14:00 Arginine 15:11 Phenylalanine 16:42 Tyrosine 17:59 Proline 19:36 Histidine 21:16 Tryptophan

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Thank u so much sir I just entered 200lvl bch and I founded these structures kind of rigorous but u made it so easy for me may God continue to bless u brother looking forward to getting an A tho 😅⭐

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for the A.A. that have polar and non-polar properties, they are referred to as amphipathic

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I don't have any biochemistry classes (yet), but this video already helped me learn the amino acids structure and names. I've heard that many biochem students don't know them all 20, so i thought, "How bad could it be?" After this, it was not that bad. (I think im gonna learn more about biochem in this channel than in my future college courses)

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