True about Isopeptide bond:: (A) It makes protein resistant, (B) Bond is formed b/w carboxyl terminus of one protein and the amino group of a lysine residue on another, (C) Involves in post-transcriptional modification of protein and Enzyme acts as catalyst for the bond formation both, (D) All
Answer is D. All i.e. (It makes protein resistant, Bond is formed b/w carboxyl terminus of one protein and the amino group of a lysine residue on another, Involves in post-transcriptional modification of protein, Enzyme acts as catalyst for the bond formation)