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  • Title: Chemical studies on the structure of mucopeptide isolated from Streptococcus bovis.
    Author: Kane J, Lackland H, Karakawa WW, Krause RM.
    Journal: J Bacteriol; 1969 Jul; 99(1):175-9. PubMed ID: 5802603.
    Abstract:
    Mucopeptides isolated from Streptococcus bovis cell walls were found to be composed of alanine, glutamic acid, lysine, and threonine in a mole ratio of 3:1:1:1. A dipeptide, N(epsilon)-lysylthreonine, was isolated from S. bovis mucopeptide by ion-exchange chromatography. This finding suggests that threonine is associated with the bridge which cross-links adjacent tetrapeptides by connecting the epsilon-amino group of lysine of one tetrapeptide to the carboxyl group of d-alanine of another to form the mucopeptide matrix.
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