PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 10220355-4 1999 In this paper, we report that several divalent metal cations, such as Mn2+, Co2+, Ni2+, and Zn2+ bind to the second Mg2+-binding site of Csk with up to 13200-fold higher affinity than Mg2+. Zinc 92-96 C-terminal Src kinase Homo sapiens 137-140 10220355-8 1999 Zn2+ has the highest affinity for the second Mg2+-binding site of Csk at 0.65 microM, but supports no kinase activity, acting as a dead-end inhibitor. Zinc 0-4 C-terminal Src kinase Homo sapiens 66-69 11162381-2 2001 Zn2+ can bind to this site to replace Mg2+, which inhibits Csk kinase activity. Zinc 0-4 C-terminal Src kinase Homo sapiens 59-62 11162381-3 2001 The binding is reversible and removal of Zn2+ results in an active Csk apoenzyme. Zinc 41-45 C-terminal Src kinase Homo sapiens 67-70 11162381-6 2001 Since the binding of Csk to Zn2+ is not affected by up to 200 mM NaCl, high ionic strength conditions were used in the purification procedure, minimizing nonspecific binding due to ionic interactions. Zinc 28-32 C-terminal Src kinase Homo sapiens 21-24