An Innovative Glycan and Glycopeptide MSn Data Analysis Tool
SimGlycan predicts the structure of glycans and glycopeptides using mass spectrometry data. SimGlycan accepts the experimental MS/MS and Multi Stage/Sequential mass spectrometry (MSn, n>2) data, matches them with its own database of theoretical fragments and generates a list of probable candidate structures. Each structure is scored to reflect how closely it matches your experimental data. Apart from the structural information, other biological information for the probable molecular structures such as the glycan class (N-Linked, O-Linked heparin, lipopolysaccharide etc.), reaction, pathway and enzyme are also made available for easy reference in case of structural elucidation of glycans while in the case of glycopeptide qualitative analysis, information such as Protein ID, Protein Name, Source, Classification, Class, peptide sequence, peptide mass etc. are made available for identified glycopeptides.
These experimental mass spectrometry data can be uploaded in SimGlycan using standard file formats or directly from mass spectrometer raw files from SCIEX (TripleTOF™ 5600 System, TOF/TOF 5800, 4800 Plus MALDI TOF/TOF™ Analyzer, QTRAP® 6500 System, 4000 QTRAP® and QSTAR® Elite Systems, 4000 QTRAP® and QSTAR® Elite Systems), Agilent Technologies (Agilent 6200 Series TOF LC/MS and Agilent 6500 Series Q-TOF LC/MS systems), Bruker Corporation (ultrafleXtreme™ MALDI TOF/TOF, ultraflex™ MALDI TOF/TOF, autoflex™ TOF and TOF/TOF, maXis™ UHR-TOF, micrOTOF™, micrOTOF-Q™, solariX™ Qq-FTMS, and amaZon™ ion trap series), Thermo Scientific™ (LTQ FT Ultra, LTQ Velos, LTQ XL, LTQ Orbitrap Discovery, LTQ Orbitrap Velos, LTQ Orbitrap XL, MALDI LTQ Orbitrap, Orbitrap Elite, Q Exactive, Thermo Scientific™ Orbitrap™ Fusion™ Tribrid mass spectrometer and Thermo Scientific™ Q Exactive™ hybrid quadrupole-Orbitrap mass spectrometer) and Waters Corporation (SYNAPT G2 HDMS, SYNAPT G2 MS, Xevo G2 QTof, Xevo QTof MS, Xevo TQ MS and Xevo TQ-S platforms).
For supporting automated data analysis of different instrument workflows, SimGlycan includes comprehensive support for different adducts such as H, Li, Na, Mg2+, K, HCOO- and NH4+ and adduct combinations such as Na + H, Li + H etc. MS/MS fragmentation patterns of glycans and glycopeptides (based on different instrument settings) can be specified in order to enable the program to reduce false positives from the data analysis results.
SimGlycan can analyze mass spectrometry data for released glycans that are underivatized, permethylated and reducing end modified. It also provides comprehensive support to perform MSn data analysis, which assists in resolving heterogeneity, branching patterns and isobaric oligosaccharide structures. SimGlycan can identify complex glycosaminoglycan structures even when some of the carbohydrate residues are modified with substituents such as sulfate, phosphate, ethanolamine etc.
