Biochemistry of Amino Acids - A. Majster 1961

Natural Amino Acids
Peptides and Related Compounds
Streptogenin

Strepogenin is the name given to a peptide growth factor that stimulates the proliferation of certain microorganisms, including Lactobacillus casei and L. bulgaricus [411–413]; it also accelerates the growth of mice [414] and mitigates the Toxic effects of Lycomarasmin [415, 416]. Tryptic hydrolysates of certain Proteins, such as Insulin, contain products exhibiting strepogenin activity [417]. The Structure of this growth factor (or factors) has not yet been elucidated, although it is known that glutamic acid is a component of the active Peptides [418]. Several synthetic peptides exhibit strepogenin activity: serylglycylglutamic acid, glycylglutamic acid, serylhistidyldleucylvalylglutamic acid, and serylhistidyleucylvalylglutamylalanylleucine [418, 419].



Last update: 06/08/2026

Editorial and Educational Adaptation: This material has been compiled based on the primary/original source text. The project team performed an editorial review, corrected technical inaccuracies, structured sections, and adapted the content for an educational format.

What was processed:

  • elimination of formatting defects (OCR errors, structural breaks, corrupted characters);
  • editorial organization of content;
  • standardization of terminology in accordance with academic sources;
  • verification of factual statements against the original source text.

All mentions of the author, publication year, and origin of the primary text have been preserved in accordance with the source.