SOACS index: an easy NMR-based query for glycan retrieval

Area of Science:

• Carbohydrate Chemistry
• Structural Biology
• Biophysical Chemistry

Background:

• Proton Nuclear Magnetic Resonance ((1)H NMR) spectroscopy is a primary method for determining the de novo primary sequence of glycans.
• Tens of thousands of oligosaccharide sequences have been determined using NMR spectroscopy combined with methods like mass spectrometry and gas chromatography over the past 30 years.
• These sequences and experimental data are compiled in web databases, now unified in GlycomeDB.

Purpose of the Study:

• To address the difficulty non-specialists face in searching for exact glycan sequences based solely on proton chemical shifts.
• To develop a user-friendly query method for retrieving existing glycan sequences from databases.

Main Methods:

• Development of a novel query named Sequence-specific Oligosaccharide Analysis by Chemical Shifts (SOACS).
• The SOACS query utilizes readily distinguishable (1)H chemical shifts from (1)H NMR spectra.
• Designed for accessibility to a wide scientific community.

Main Results:

• SOACS enables easier retrieval of existing glycan sequences compared to traditional methods relying solely on chemical shifts.
• The query is based on fundamental (1)H NMR spectral data, making it broadly applicable.
• The method is intended for use by a wide range of scientists, not just NMR specialists.

Conclusions:

• The SOACS query simplifies the process of identifying and retrieving glycan sequences from NMR data.
• This tool enhances accessibility to glycomic data for researchers across various scientific disciplines.
• SOACS facilitates broader utilization of NMR-derived glycan sequence information in scientific research.