Among commensals, the gut-adapted Lactobacillus rhamnosus GG strain encodes the operons for two varieties of these pili (SpaCBA and SpaFED), with each structure consisting of backbone, tip, and basal pilin subunits.
ANTC is essentially a node coloring algorithm, which creates a single topology structure consisting of backbone nodes.
The other advantage of topology constructing phase is that it also constructs an implicit data forwarding hierarchy consisting of backbone nodes towards the sink or base station node.
The building block (inside the parentheses) consists of two backbone carbon atoms to which three hydrogen atoms and one phenyl (C6H5) ring are bonded as side groups.
Essentially, the molecule consists of a backbone of carbon atoms with attached hydrogen atoms; attached to every other carbon atom is a pendant methyl group (CH3).
Xylan consists of a backbone of β-1,4-D-xylan with short side chains of O-acetyl, β-L-arabinofuranosyl, D-α-glucuronic acid and phenolic acid (Coughlan and Hazlewood [1993]).
As mentioned before the motif consists of a backbone and 4 key residues.
An example of this is the production of cyanophycin, which is produced using cyanobacteria and consists of a backbone of poly aspartic acid) with an arginine molecule attached to each aspartic acid unit.
GAX consists of a backbone of β-1,4-linked xylopyranosyl units (Xyl p), which can be substituted by α-1,3-linked arabinofuranosyl (Ara f) residues, and by 4- O-methylglucuronic acid (MeGlcA) via α-1,2 linkages.
In softwoods, xylan normally forms 5 10% of the total dry matter as arabinoglucuronxylan and consists of a backbone of 1,4-linked β-D-xylopyranose units, partially substituted by 4-O-methyl-α-D-glucuronic acid and α-L-arabinofuranose units [ 3].
