Two novel alpha-linked sialyltrisaccharide imidazolium-type probes (ITags) based on the structures of biologically relevant 6'-sialyllactosamine and 30-sialyllactosamine were efficiently and stereoselectively prepared using a chemo-enzymatic approach. The apparent kinetic parameters for the enzyme catalyzed transformations with alpha-2,3-sialyltransferase (alpha-2,3-ST) and alpha-2,6-sialyltransferase (alpha-2,6-ST) were measured by LC-MS using the ionic probes. This strategy demonstrates the suitability of the ITags to probe glycosyltransferase activity and their versatility in the preparation of sialylated epitopes for glycobiology research. (C) 2015 Elsevier Ltd. All rights reserved.
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CSIR, Indian Inst Chem Technol, Proc Engn & Technol Transfer Div, Hyderabad, Telangana, India
Acad Sci & Innovat Res AcSIR, Ghaziabad 201002, IndiaCSIR, Indian Inst Chem Technol, Proc Engn & Technol Transfer Div, Hyderabad, Telangana, India
Kethavath, Santhosh Nayak
Patlolla, Ravinder Reddy
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Acad Sci & Innovat Res AcSIR, Ghaziabad 201002, India
CSIR, Indian Inst Chem Technol, Organ Synth & Proc Chem Div, Hyderabad, Telangana, IndiaCSIR, Indian Inst Chem Technol, Proc Engn & Technol Transfer Div, Hyderabad, Telangana, India
Patlolla, Ravinder Reddy
Rosangzuala, K.
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Acad Sci & Innovat Res AcSIR, Ghaziabad 201002, India
CSIR, Indian Inst Chem Technol, Organ Synth & Proc Chem Div, Hyderabad, Telangana, IndiaCSIR, Indian Inst Chem Technol, Proc Engn & Technol Transfer Div, Hyderabad, Telangana, India
Rosangzuala, K.
Polumati, Anand
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CSIR, Indian Inst Chem Technol, Proc Engn & Technol Transfer Div, Hyderabad, Telangana, India
Acad Sci & Innovat Res AcSIR, Ghaziabad 201002, India
CSIR, Indian Inst Chem Technol, Hyderabad, Telangana, IndiaCSIR, Indian Inst Chem Technol, Proc Engn & Technol Transfer Div, Hyderabad, Telangana, India
Polumati, Anand
Nemali, Manjula
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CSIR, Indian Inst Chem Technol, Organ Synth & Proc Chem Div, Hyderabad, Telangana, IndiaCSIR, Indian Inst Chem Technol, Proc Engn & Technol Transfer Div, Hyderabad, Telangana, India
Nemali, Manjula
V. Pawar, Sandip
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Panjab Univ, Univ Inst Pharmaceut Sci, Chandigarh, IndiaCSIR, Indian Inst Chem Technol, Proc Engn & Technol Transfer Div, Hyderabad, Telangana, India
V. Pawar, Sandip
Banoth, Linga
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Acad Sci & Innovat Res AcSIR, Ghaziabad 201002, India
CSIR, Indian Inst Chem Technol, Organ Synth & Proc Chem Div, Hyderabad, Telangana, India
CSIR, Indian Inst Chem Technol, Hyderabad, Telangana, IndiaCSIR, Indian Inst Chem Technol, Proc Engn & Technol Transfer Div, Hyderabad, Telangana, India
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Univ Milan, Dipartimento Sci Biomed & Clin Luigi Sacco, I-20157 Milan, ItalyUniv Milan, Dipartimento Biotecnol Med & Med Traslaz, I-20133 Milan, Italy
Ciuffreda, Pierangela
Grisenti, Paride
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EUTICALS SpA, I-20089 Rozzano, MI, ItalyUniv Milan, Dipartimento Biotecnol Med & Med Traslaz, I-20133 Milan, Italy
Grisenti, Paride
Ferraboschi, Patrizia
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Univ Milan, Dipartimento Biotecnol Med & Med Traslaz, I-20133 Milan, ItalyUniv Milan, Dipartimento Biotecnol Med & Med Traslaz, I-20133 Milan, Italy