Table II. Proteins and protein complexes identified using top-down proteomics in native mode (nTD). Protein accession numbers in UniprotKB (Accession #), protein-protein interaction (Complex), average theoretical mass, average observed mass of monomers and complexes masses in parentheses, and post-translational modifications (PTM) are included.

Protein	Accession #	Complex	Theoretical mass	Observed mass	PTM
Cobra venom factor	I2C090	–	140,957 Da	146,565 +/− 63 Daa	Glycosylation 5,608 Da
l-amino acid oxidase form 1	P81383	Homodimer	53,691 Da (107,382 Da)	130,014.2 +/− 0.7 Dab	Glycosylation 22,637.2 Da
l-amino acid oxidase form 2	P81383	Homodimer	53,690 Da (107,382 Da)	126,271.0 +/− 2.3 Dab	Glycosylation 18,889.2 Da
Cysteine rich secretory protein	Q7ZT98	Homodimer	24,960 Da (49,920 Da)	49,918 Da	–
Phospholipase A2	Q9DF33	Homodimer	13,176 Da (26,352 Da)	26,375 Da	–
Snake venom metalloproteinase	D3TTC2	–	47,684 Da	49,283 Dab	Glycosylation 1,599 Da

^a Centered on the top of the glycoform distribution.

^b The most abundant glycoform in the distribution.