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STn Antigen: Fmoc-Ser(Neu5Acα(2-6)GalNAc)-OH (Peracetate, Benzyl Ester)

STn Antigen: Fmoc-Ser(Neu5Acα(2-6)GalNAc)-OH (Peracetate, Benzyl Ester) molecular structure


SKUPack SizeAvailabilityPriceQuantity
GA121015-25MG25mgIn StockUS$950.00
GA121015-50MG50mgIn StockUS$1,500.00
GA121015-100MG100mgIn StockUS$2,500.00
GA121015-250MG250mgIn StockUS$5,000.00

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Product Details

Name STn Antigen: Fmoc-Ser(Neu5Acα(2-6)GalNAc)-OH (Peracetate, Benzyl Ester)
Product No.GA121015
Synonym(s) STn Epitope (Serine); STn Antigen (Serine); Sialyl-Tn Antigen; Fmoc-L-Ser(Neu5Acα(2-6)GalNAc)-OH (Peracetate, Benzyl Ester); Fmoc-Ser(α-L-Neu5Ac(Ac)₄-(2-6)-α-D-GalNAc(Ac)₂)-OH, Benzyl Ester
CategoryGlycoamino AcidsSerine
CAS No.914456-67-0
Molecular Weight1164.12
Availability in BulkYes
Purity>95% (HPLC)
DescriptionTumor-Associated Carbohydrate Antigen (TACA). STn is a sialylated form of the truncated O-glycosylated core determinant Tn with structure: Neu5Acα2-6GalNAcα-O-Ser/Thr. STn results from an early sialylation of the Tn antigen due to overexpression of the enzyme STn synthase (ST6GalNAc-I) and/or disruption of further glycan elongation processes. STn is negligibly expressed in healthy tissues but overexpressed in >80% of human carcinomas. As such, STn is implicated in tumour cell organotropic metastasis. Targeting immune responses to truncated variants of O-glycan chains expressed by tumour cells represents a promising approach for the development of antigen-specific therapeutic vaccines against cancers, and accumulated evidence has rendered STn a prime target for cancer immunotherapy.
CommentsN-Acetyl-D-Galactosamine; O-Link; Disaccharide; Serine; Blocked; Amino Acid; Ac, Bz
ReferencesJ. Munkley, Int J Mol Sci. 2016, 17, 275; M. Sletmoen, et al. Glycobiology 2018, 28, 437–445
Datasheet(s)GA121015_COA.pdf (83.541 KB)
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