the major lipid a species , iva ( o- ( 2-amino-2-deoxy-beta-d-glucopyranosyl ) - ( 1-6 ) -2-amino-2-deoxy-alpha-d - glucose , acylated at positions 2 , 3 , 2 ' , 3 ' with beta-hydroxymyristoyl groups and bearing phosphates at positions 1 and 4 ' ) , was shown to be converted mainly to lps by pulse-chase experiments in the absence of inhibitor .
C0023767
lipid a
C0023810
lps