The Cannabis Proteome Draft Map Project

Area of Science:

• Proteomics
• Plant Science
• Biochemistry

Background:

• Research on Cannabis (Cannabis sativa, Cannabis indica) is expanding due to relaxed restrictions.
• Previous studies focused on chemical compounds (cannabinoids, terpenes) and genetic profiles.
• A comprehensive proteome map for Cannabis has been lacking.

Purpose of the Study:

• To construct a comprehensive draft map of the Cannabis proteome.
• To develop a method for annotating protein sequences without a reference genome.
• To identify proteins and understand post-translational modifications in Cannabis flower.

Main Methods:

• Combined next-generation DNA sequencing with shotgun proteomics data.
• Developed a novel bioinformatics approach to generate annotated FASTA files.
• Utilized the annotated database to refine protein identification and analyze post-translational modifications.

Main Results:

• Identified over 17,000 potential protein sequences, with 13,000 confidently identified with putative functions.
• Created the first comprehensive annotated protein FASTA database for Cannabis.
• Demonstrated the significance of post-translational modifications, specifically lysine acetylation and protein glycosylation, in Cannabis flower proteomes.

Conclusions:

• The developed method enables proteomic analysis of Cannabis without a pre-existing annotated genome.
• The comprehensive proteome map and identified proteins provide a foundation for future Cannabis research.
• Understanding post-translational modifications offers new insights into Cannabis flower biology and function.