PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 9468299-4 1998 Here we report on a differential effect of suramin on PKCmu and various PKC isoforms representing the cPKC, nPKC, and aPKC group of the PKC family. Suramin 43-50 protein kinase C zeta Homo sapiens 54-57 9468299-5 1998 In the absence of any cofactors suramin activates all PKC isoforms in the order of aPKCzeta >> PKCmu > cPKC, nPKCdelta. Suramin 32-39 protein kinase C zeta Homo sapiens 54-57 9468299-6 1998 As judged by the Vmax/KM ratios (0.5 for PKCmu and 2.2 for PKCzeta) the substrate syntide 2 is phosphorylated by suramin-activated PKCzeta around four times more effectively than by suramin-activated PKCmu. Suramin 113-120 protein kinase C zeta Homo sapiens 59-66 9468299-6 1998 As judged by the Vmax/KM ratios (0.5 for PKCmu and 2.2 for PKCzeta) the substrate syntide 2 is phosphorylated by suramin-activated PKCzeta around four times more effectively than by suramin-activated PKCmu. Suramin 113-120 protein kinase C zeta Homo sapiens 131-138 9468299-6 1998 As judged by the Vmax/KM ratios (0.5 for PKCmu and 2.2 for PKCzeta) the substrate syntide 2 is phosphorylated by suramin-activated PKCzeta around four times more effectively than by suramin-activated PKCmu. Suramin 182-189 protein kinase C zeta Homo sapiens 131-138 9468299-7 1998 Suramin-activated PKCmu behaves like that activated by phosphatidylserine and the phorbol ester TPA regarding autophosphorylation and differential inhibition by the PKC inhibitors Go 6976 and Go 6983. Suramin 0-7 protein kinase C zeta Homo sapiens 18-21 9468299-8 1998 In the presence of activating cofactors, such as phosphatidylserine and TPA or cholesterol sulfate (for PKCzeta), the activity of the aPKCzeta is further stimulated, PKCmu is not significantly affected, and the cPKCs and the nPKCdelta are strongly inhibited by suramin. Suramin 261-268 protein kinase C zeta Homo sapiens 104-111 9468299-9 1998 The differential action of suramin on PKC isoenzymes might play a role in some of its biological effects, as for instance inhibition of proliferation and tumor development. Suramin 27-34 protein kinase C zeta Homo sapiens 38-41 9468299-10 1998 Moreover, due to this property suramin will possibly be a valuable tool for discriminating the activities of PKC isoenzymes in vitro and in vivo. Suramin 31-38 protein kinase C zeta Homo sapiens 109-112