Amino acid sequence: mutation at amino acid position 20 from lysine (K) to cysteine (C)
SGRGKGGKGLGKGGAKRHRCVLRDNIQGITKPAIRRLARRGGVKRISGLIYEETRGVLKVFLENVIRDAVTYTEHAKRK TVTAMDVVYALKRQGRTLYGFGG
* Calculated by ExPASy-ProtParam: https://web.expasy.org/cgi-bin/protparam/protparam