alpha-D-Manp-(1->2)-alpha-D-Manp-(1->2)-alpha-D-Manp-(1->3)-[alpha-D-Manp-(1->6)]-beta-D-Manp-(1->4)-beta-D-GlcpNAc-(1->4)-beta-D-GlcpNAc-yl group
alpha-d-manp-(1->2)-alpha-d-manp-(1->2)-alpha-d-manp-(1->3)-[alpha-d-manp-(1->6)]-beta-d-manp-(1->4)-beta-d-glcpnac-(1->4)-beta-d-glcpnac-yl group
This group is attached to proteins in mammalian and E. coli cells (see PDB 1A14 and PMID 7881169).