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[Somatotropin: structure, (bio)synthesis and species specificity]
J M Kievits1, H C van Dam, H W Hessel
1Vakgroep Bedrijfsdiergeneeskunde en Voortplanting, Faculteit der Diergeneeskunde, Utrecht.
Tijdschrift Voor Diergeneeskunde
|July 15, 1988
Summary
Bovine somatotropin (BST) is a pituitary hormone that stimulates milk synthesis. While recombinant DNA technology enables large-scale production, BST is largely inactive in humans due to species-specific molecular differences.
Area of Science:
- Endocrinology
- Molecular Biology
- Biochemistry
Context:
- Review of existing literature on bovine somatotropin (BST).
- BST is a pituitary hormone composed of 190 amino acids.
- BST plays a role in stimulating milk synthesis.
Purpose:
- To review the biosynthesis and species specificity of bovine somatotropin (BST).
- To discuss the production of BST using recombinant DNA techniques.
- To explore the biological activity and receptor interactions of somatotropin.
Summary:
- Recombinant BST (r-BST) production via recombinant DNA techniques since 1982 facilitates large-scale applications.
- The somatotropin molecule possesses multiple active sites interacting with specific receptors, leading to diverse biological effects.
- Significant amino acid sequence homology (65%) exists between human and bovine somatotropins, yet BST exhibits minimal therapeutic activity in humans.
Impact:
- Highlights the species-specific nature of somatotropin, impacting its therapeutic applications.
- Underlines the importance of molecular structure in determining biological function and receptor binding.
- Provides insights into the limitations of using animal-derived hormones in human therapies.