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

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

                                                                                                                       

AMIDE(2)

1. ASPARAGINE :- Amide of ASPARTIC ACID

2. GLUTAMINE :- Amide of GLUTAMIC ACID

ANOTHER PART (3+3+2+2) OF CLASSIFICATION WILL BE ON NEXT BLOG.

                                                                    3+3+2+2 rule

THANK YOU!