%0 Journal Article %T Increasing the coverage of the N-terminome with LysN amino terminal enrichment (LATE). %A Hanna R %A Rozenberg A %A Lavy T %A Kleifeld O %J Methods Enzymol %V 686 %N 0 %D 2023 %M 37532396 %F 1.682 %R 10.1016/bs.mie.2023.04.003 %X The field of N-terminomics has been advancing with the development of novel methods that provide a comprehensive and unbiased view of the N-terminome. Negative selection N-terminomics enables the identification of free and naturally modified protein N-termini. Here, we present a streamlined protocol that combines two negative selection N-terminomics methods, LATE and HYTANE, to increase N-terminome coverage by 1.5-fold compared to using a single methodology. Our protocol includes sample preparation and data analysis of both methods and can be applied to studying the N-terminome of diverse samples. The suggested approach enables researchers to achieve a more detailed and accurate understanding of the N-terminome.