Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Jan F. Klinker"'
Autor:
Roland Seifert, Jan F. Klinker
Publikováno v:
Biochemical and Biophysical Research Communications. 262:341-345
Little is known about the interaction of pyrimidine nucleotides with G-proteins. Here we report that under experimental conditions that exclude transphosphorylation reactions, nucleoside 5′-triphosphates inhibited transducin-catalyzed GTP hydrolysi
Publikováno v:
Neuroscience Letters. 213:25-28
Effects of ethanol on signal transduction in neuronal membranes are supposed to occur by the interaction with heterotrimeric guanine nucleotide-binding proteins (G-proteins). Several substances affect signal transduction by activation of G-proteins d
Activation of GTP formation and high-affinity GTP hydrolysis by mastoparan in various cell membranes
Publikováno v:
Biochemical Pharmacology. 51:217-223
The wasp venom, mastoparan (MP), is a direct activator of reconstituted pertussis toxin-sensitive G-proteins and of purified nucleoside diphosphate kinase (NDPK) [E.C. 2.6.4.6.]. In HL-60 membranes, MP activates high-affinity GTPase [E.C. 3.6.1.-] an
Publikováno v:
Experimental Dermatology. 4:231-239
Studies from several laboratories have revealed that structurally diverse substances including the wasp venom, mastoparan (MP), activate purified regulatory heterotrimeric guanine nucleotide-binding proteins (G-proteins) in a receptor-independent man
Autor:
W Schunack, Rainer Harhammer, Roland Seifert, A. Hagelüken, Lore Grünbaum, Bernd Nürnberg, Günter Schultz, Christian Leschke, Jan F. Klinker
Publikováno v:
Biochemical Pharmacology. 49:901-914
In dibutyryl cAMP-differentiated human leukemia (HL-60) cells, the potent histamine H1-receptor agonist, 2-(3-chlorophenyl)histamine, activates pertussis toxin (PTX)-sensitive guanine nucleotide-binding proteins (G-proteins) of the Gi-subfamily by a
Autor:
Roland Seifert, Jan F. Klinker
Publikováno v:
Pharmazie in Unserer Zeit. 24:250-263
Autor:
Roland Seifert, Jan F. Klinker
Publikováno v:
European journal of biochemistry. 261(1)
Known nucleoside diphosphate kinases (NDPKs) are oligomers of 17-23-kDa subunits and catalyze the reaction N1TP + N2DP --N1DP + N2TP via formation of a histidine-phosphorylated enzyme intermediate. NDPKs are involved in the activation of heterotrimer
Autor:
Roland Seifert, Jan F. Klinker
Publikováno v:
Biochemical pharmacology. 54(5)
G-proteins mediate signal transfer from receptors to effector systems. In their guanosine 5'-triphosphate (GTP)-bound form, G-protein alpha-subunits activate effector systems. Termination of G-protein activation is achieved by the high-affinity GTPas
Publikováno v:
Biochemical pharmacology. 53(11)
Naturally occurring beta-carbolines are lipophilic compounds which show psychotropic and physiological effects in mammals. They bind to distinct high-affinity binding sites in various mammalian tissues. However, the mechanism by which the beta-carbol
Publikováno v:
General pharmacology. 27(1)
1. 1. HL-60 human leukemia cells are a widely employed model system for the analysis of signal transduction processes mediated via regulatory heterotrimeric guanine nucleotide-binding proteins (G-proteins). HL-60 promyelocytes are pluripotent and can