Disulfide bond

By default Prot pi handels proteins assuming all cystein side chains are reduced to free sulfhydryl. Disulfide bonds are usually formed in proteins secreted to the extracellular medium. Therefore disulfide bonds can be specified as a modification, so that cystein is treated as halfcystine. Lit.



Type
Predefined
pKa1
None
pKa2
None
pKa3
None
NativeCharge
Loss
H
Gain
Deltamass
Monoisotopic
-1.007825032071
Average
-1.00794075389676
UVSpec
Display
λ
/ nm
ε
/ M-1 cm-1
214 670
240 187
245 193.5
250 193
255 180.5
260 157.5
265 136
270 107
272 97.5
274 87.5
276 80
278 70
280 62.5
282 55
284 47.5
286 42.5
288 36.5
290 31.5
292 27
294 25
296 21.5
298 18
300 15.5
302 14.5
304 12
306 10
308 7.5
310 5
312 2.5
314 0
316 0
318 0
320 0
H
AA
C
Pattern