Range: ±10 min^-1
||Sondhi D, Xu W, Songyang Z, Eck MJ, Cole PA. Peptide and protein phosphorylation by protein tyrosine kinase Csk: insights into specificity and mechanism. Biochemistry. 1998 Jan 6 37(1):165-72. p.167 right column 3rd paragraphPubMed ID9425036
||"This peptide [KKKKEEIYFFF] proved to be the most potent small
peptide substrate yet identified for Csk with
kcat=200±10min^-1 and Km=550±100µM with the divalent ion
Mn, an overall catalytic efficiency at least 500-fold greater
than that of EGQYQPQPG and within a factor of 4 of poly-(Glu,Tyr)."