---QVL------------------ARK------WRPQTFADVVGQEHVLTALANGLSLGRIH---H--------AYLFSGTRGVGK---TSIARLLAKCET

MSYQVLCELVKFTIIHDWPGKKGQARKLVTGNTWRPQTFADFFGQEHVLTALANGLSLGRIHVPCHNIKHNMSVAWLFSGTRGVGKSYWTSIARLLAH---
---***------------------***------********..*******************---*--------*.**********---********.--- 

W = M – X – G 
W =53-4-45=4