Explain the process of formation of complex proteins.

Explanation

i. Information about protein synthesis is stored in the DNA. mRNA is synthesised from this DNA by the process of transcription. The process of synthesis of proteins from DNAS through RNA is called the central dogma.
ii. Translation occurs in the following manner:
a. mRNA formed in the cucleus during transcription moves in the cytoplsm, carrying the coded message by DNA.
b. Each mRNA contains codes for amino acids in the form of triplet codons.
c. As per the message of mRNA, amino acids are supplied by the tRNA, which has an anticodon (complementary sequence) to the codon oln mRNA.
d. The amiono acids suplied by tRNA are bound together by peptide bonds with the help of nRNA.
iii. The process continues as the ribosome moves along the entire length of the mRNA by a distance of one triplet codon, also known as translocation.
In this way many such chains of amino acids (peptides) come together to form complex proteins.