# Fixed PTMs
#AA   		offset      	type    	locs	symbol  PTM name
C    		57.021464   	FIXED   	ALL    	CAM    	Carbamidomethyl

# Optional PTMs
M,H,W   	15.994915 	OPTIONAL 	ALL 	oxi 	Oxidation
P,R,K,M,F,W,C   31.989829       OPTIONAL 	ALL     dioxi   Dioxidation
K   		42.010565 	OPTIONAL 	ALL 	acet 	Acetylation
C,H,K,N,Q,R   	14.015650   	OPTIONAL 	ALL 	met 	Methylation
K		28.0313		OPTIONAL 	ALL 	2met 	Double_Methylation
S,T,Y		79.966331  	OPTIONAL  	ALL  	phos   	Phosphorylation

# Terminal PTMs
N_TERM 		42.010565  	OPTIONAL  	N_TERM  n-acet  N-Acetylation


