PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 16259621-10 2006 Interestingly, degradation of an intrinsically unstable mutant form of TS, containing a Pro-->Leu substitution at residue 303, is directed by C-terminal, rather than N-terminal, sequences. Leucine 97-100 thymidylate synthetase Homo sapiens 71-73