PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
9012462-7	1997	Here, we report that the mutation Cys-620 --> Tyr is able to cause a constitutive dimerization of Ret, with consequent activation of its kinase and transforming activities, to a lower extent than mutation of Cys-634.	Tyrosine	49-52	ret proto-oncogene	Homo sapiens	101-104