>sp|Q5M4W5|KITH_STRT2 Thymidine kinase OS=Streptococcus thermophilus GN=tdk MAQLYFRYGTMNSGKSIEILKVAYNYEEQGKPVVLLTSRLDDRDEVGYISSRIGMRRKAY PIGNDTDIFDYIDDISPRPYCVLIDEAQFLTRANVYDLARIVDELDIPVMAFGLKNDFQN NLFEGSKYLLLLSDKIEEIKTICHYCSRKATMVLRMEDGEPVYEGVQVQIGGHESYISVC RKHWFNPPRERIVPLKQN