>sp|Q5M0B8|KITH_STRT1 Thymidine kinase OS=Streptococcus thermophilus GN=tdk MAQLYFRYGTMNSGKSIEILKVAYNYEEQGKPVVLLTSRLDDRDEVGYISSRIGMRRKAY PIGNDTDIFDYIDDISPRPYCVLIDEAQFLTRANVYDLARIVDELDIPVMAFGLKNDFQN NLFEGSKYLLLLSDKIEEIKTICHYCSRKATMVLRMEDGEPVYEGVQVQIGGHESYISVC RKHWFNPPRERIVPLK