Skip to main content
. 2020 Apr 17;86(9):e02981-19. doi: 10.1128/AEM.02981-19

TABLE 1.

Analysis of L. lactis F44 PG by LC-MS

Additive Structurea Mol wt Retention time (min) Area (%)
d-Met PentaMet 1,140.6 2.5 0.42
d-Phe PentaPhe 1,156.6 8.7 6.75
d-Phe TetraPhe 1,074.5 28.3 0.85
a

PentaMet, G–M–l-Ala–d-Gln–l-Lys (d-Asn)–d-Ala–d-Met; PentaPhe, G–M–l-Ala–d-Gln–l-Lys (d-Asn)–d-Ala–d-Phe; TetraPhe, G–M–l-Ala–d-Gln–l-Lys (d-Asp)–d-Phe (d-Asn or d-Asp is the peptide bridge bound to l-Lys, G is N-acetylglucosamine [GlcNAc], and M is N-acetylmuramic acid [MurNAc]).