Protein methylation, catalyzed by highly specific methyltransferase enzymes, is a relatively common post-translational modification and plays an important role in various biological processes. Monomethylation occurs most frequently at arginine and lysine residues. Lit.



Type
Incomplete
pKa1
None
pKa2
None
pKa3
None
NativeCharge
Loss
H
Gain
CH3
Deltamass
Monoisotopic
14.015650064142
Average
14.0266174045581
UVSpec
λ
/ nm 		ε
/ M-1 cm-1
214 0
240 0
245 0
250 0
255 0
260 0
265 0
270 0
272 0
274 0
276 0
278 0
280 0
282 0
284 0
286 0
288 0
290 0
292 0
294 0
296 0
298 0
300 0
302 0
304 0
306 0
308 0
310 0
312 0
314 0
316 0
318 0
320 0
H
AA
R, H, K, C, S, T, D, E, ^, $
Pattern
[KR]