Q: Is MS technology available for protein/peptide sequencing?

A: Protein/peptide sequencing by MS technology relies on database, but it is difficult to determine the sequence if the protein/peptide is unknown or listed in the database.



Q: Sample quantity requirement for N,C-sequencing?

A: 50pmol sample is required for N-sequencing and 1nmol sample is required for C-sequencing. Please offer enough sample (more than requirement QTY) to avoid quantitative analysis tolerance for the convenience of testing



Q: Why there is no peak in N,C-sequencing?

A: Maybe N-amino acid has been blocked or the sample is non-protein. It is suggested that the N-amino acid is de-blocked or analyze the composition of amino acid before testing.

 


 


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