PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
8297798-1	1993	MEK1 is a dual specificity kinase that phosphorylates and activates the Erk/MAP kinases Erk-1 and Erk-2 by phosphorylating them on threonine and tyrosine.	Threonine	131-140	mitogen-activated protein kinase 3	Mus musculus	88-93	
8297798-8	1993	Recombinant MEK2 produced in bacteria phosphorylates a kinase-inactive Erk-1 on tyrosine and threonine, whereas a kinase-inactive mutant MEK2 does not.	Threonine	93-102	mitogen-activated protein kinase 3	Mus musculus	71-76