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. Author manuscript; available in PMC: 2020 Oct 1.
Published in final edited form as: Gynecol Oncol. 2015 Oct 18;139(3):520–528. doi: 10.1016/j.ygyno.2015.10.012

Fig. 3.

Fig. 3.

Identification and sequencing of A2160 (A) Peptide sequence analysis and identification of A2160 are shown. The MS/MS fragmentation pattern of A2160 peptide (after removing glycans) coincided with the alpha-chain of complement 4 binding protein (C4BP) from positions 499 to 529 of the amino acid sequence. Asn (N) was changed to Asp (D) by hydrolysis of sugar chains. (B) A2160 glycopeptide analysis and proposed structure are shown. The molecular weights of the glycopeptide fragments (detected as triply charged ions) revealed that the sugar chains binding to Asn 506 and 528 were A3G3S3F and A2G2S2, respectively.