N-terminal sequencing service

De novo sequencing poses more challenging than the traditional database search approach, such as, ambiguous assignments of fragment ions, insufficient product ions generated in incomplete fragmentation leading to low sequence coverage and difficulty in distinguishing ion series, notably N-terminal sequencing service from C-terminal MS/MS product ions (b ions from y ions). source: http://www.creative-proteomics.com/services/de-novo-peptides-proteins-sequencing-service.htm