Summary of muropeptide composition of <i>C. jejuni</i> wild-type 81-176, Δ<i>pgp1</i> mutant, Δ<i>pgp1</i> complement (Δ<i>pgp1</i>c), and <i>pgp1</i> overexpression (81-176+<i>pgp1</i>) strains, and the resultant Δ<i>pgp1</i> PG profiles of Pgp1 activity assays consisting of Δ<i>pgp1</i> PG incuba

1Numbers represent the percent area of each muropeptide from Table S4 calculated to give a total of 100%. Values indicated with an asterisk (*) represent an equal to or greater than 20% difference in comparison to wild-type 81-176 or Δpgp1 PG to which no enzyme was added; bolded asterisked values (*) indicate a greater than 30% change. 2Values for the percentage of O-acetylated species do not represent the true level of PG O-acetylation in these strains, as most O-acetyl groups are lost in the standard alkaline muropeptide reduction procedure used in this study.