6CXG:
reference: Oligomannose Glycopeptide Conjugates Elicit Antibodies Targeting the Glycan Core Rather than Its Extremities., Nguyen DN, Xu B, Stanfield RL, Bailey JK, Horiya S, Temme JS, Leon DR, LaBranche CC, Montefiori DC, Costello CE, Wilson IA, Krauss IJ, ACS Cent Sci. 2019 Feb 27;5(2):237-249. doi: 10.1021/acscentsci.8b00588. Epub, 2019 Feb 6. PMID: 30834312

This OCA Structure page
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