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Cont... 3+3+2+2 rule

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Now this is the time to learn another 10 amino acids. THIS TIME ONLY BY CHANGING 'R' WE GET ALL OTHER AMINO ACIDS. So lets start: AROMATIC  REMEMBER ; All  aromatic amino acid's  name starts with sounds "ty" except phenylalanine which has itself a word "phenyl" which indicates aromatc amino acid. 1. PHENYLALANINE :- It is a phenyl derivative of ALANINE.  It has R =  -CH 2 C 6 H 5 2. TYROSINE               :- It is a phenol derivative of ALANINE it has R = -CH 2 C 6 H 4 OH 3. TRYPTOPHANE      :- It is a indole derivative of Glycine . It has R as Indole group     BASIC REMEMBER ; All  basic amino acids  have 3 carbon as side chain except LYSINE whose name suggest that he is LIER ( LYSINE has 4 carbon as side chain). 1. HISTIDINE :- It has R = imidazole ring as a side chain. 2. LYSINE       :- As mentioned above that this molecule is a lier. It has R = n-butylamine. 3. ARGININE  :- This has R = 3 carbon straight chain + gu

6+2+2 and 3+3+2+2 Trick to remember 20 amino acids

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Let us visualise the given below classification on the basis of 6+2+2 and 3+3+2+2 rule ALIPHATIC GROUP 1. GLYCINE :- simplest amino acid 2. ALANINE :- methyl group attached to alpha carbon of GLYCINE. 3. VALINE :-  V for valine have flipped 'V' on alanine. 4. LEUCINE :- Extra carbon attached to VALINE 5. ISOLEUCINE :- isomer of leucine as name suggest 'iso'+'leucine' = isomer of leucine. 6. PROLINE:- follow given step to remember structure of proline draw a five membered ring replace one carbon by nitrogen atom assign COOH group adjacent to nitrogen                   And this is the final structure of PROLINE FROM NOW MOST OF THE AMINO ACIDS ARE THE DERIVATIVES OF ALANINE ACIDIC (2) 1. Aspartic acid :-  -COOH group attached to ALANINE 2. Glutamic acid :- Extra carbon attached to ASPARTIC ACID as similar to valine and leucine