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H-D-Tyr-Val-NH2 is a regulatory group that acts as the prosthetic group for a number of peptidyl and peptide hormones. H-D-Tyr-Val-NH2 is also involved in catalytic mechanism, as it is the amino acid responsible for the formation of peptide bonds in proteins. H-D-Tyr-Val-NH2 is found in high concentrations in the cerebriform tissue and has been shown to be important for the ALLPEPTIDEesis of amides, which are prohormones. H-D-Tyr-Val NH2 also participates in a number of cellular reactions, including those that have a kinetic rate.

很多蛋白在细胞中非常容易被降解，或被标记，进而被选择性地破坏。但含有部分D型氨基酸的多肽则显示了很强的抵抗蛋白酶降解能力。