Term Name:	Brucella O-antigen
Synonyms:	[2)-alpha-D-Rhap4NFo-(1->2)-alpha-D-Rhap4NFo-(1->3)-alpha-D-Rhap4NFo-(1->2)-alpha-D-Rhap4NFo-(1->]m-[2)-alpha-D-Rhap4NFo-(1->]n, [alpha-Rha4NFo-2alpha-alpha-Rha4NFo-3alpha-alpha-Rha4NFo-2alpha-alpha-Rha4NFo]n-[2alpha-alpha-Rha4NFo]m
Definition:	A diblock copolymer in which one block consists of tetrasaccharide components comprising N-formyl-α-D-perosamine residues linked sequentially (1→2), (1→3) and (1→2) [α-D-Rhap4NFo-(1→2)-α-D-Rhap4NFo-(1→3)-α-D-Rhap4NFo-(1→2)-α-D-Rhap4NFo], with the second block consisting of N-formyl-α-D-perosamine residues linked solely (1→2). The percentage of (1→3) linkages compared with (1→2) ranges from 1% to 20% in different Brucella biovars.
Ontology:	ChEBI [CHEBI:137206]  ( EBI )