Table 1.

Nucleotide sequence and amino acid differences in the S protein region of the murine-adapted variant MK-P10 relative to the S protein of MK

Nucleotide position	Nucleotide substitution	Amino acid change	Amino acid position
1,487	T → C	Ile (I) → Thr (T)	496
2,321	C → T	Thr (T) → Met (M)	774
2,411	C → A	Ala (A) → Asp (D)	804
4,142	A → G	His (H) → Arg (R)	1,381