Constitutive activity of G-protein-coupled receptors: cause of disease and common property of wild-type receptors

R Seifert, K Wenzel-Seifert - Naunyn-Schmiedeberg's archives of …, 2002 - Springer
The aim of this review is to provide a systematic overview on constitutively active G-protein-coupled
receptors (GPCRs), a rapidly evolving area in signal transduction research. We will …

[HTML][HTML] QTc prolongation by psychotropic drugs and the risk of Torsade de Pointes

K Wenzel-Seifert, M Wittmann… - Deutsches Ärzteblatt …, 2011 - ncbi.nlm.nih.gov
Method We searched PubMed for pertinent literature on the risk of QTc prolongation and/or
TdP associated with commonly used psychotropic drugs. Results Thioridazine and …

Molecular analysis of β2-adrenoceptor coupling to Gs-, Gi-, and Gq-proteins

K Wenzel-Seifert, R Seifert - Molecular pharmacology, 2000 - ASPET
The β 2 -adrenoceptor (β 2 AR) couples to the G-protein G s to activate adenylyl cyclase.
Intriguingly, several studies have demonstrated that the β 2 AR can also interact with G-proteins …

Cyclosporin H is a potent and selective formyl peptide receptor antagonist. Comparison with Nt-butoxycarbonyl-L-phenylalanyl-L-leucyl-L-phenylalanyl-L-leucyl-L …

K Wenzel-Seifert, R Seifert - Journal of immunology (Baltimore, Md …, 1993 - journals.aai.org
The cyclic undecapeptide, cyclosporin (Cs) H, is a potent inhibitor of FMLP-induced superoxide
anion (O2-) formation in human neutrophils. We studied the effects of CsH in comparison …

GPCR–Gα fusion proteins: molecular analysis of receptor–G-protein coupling

R Seifert, K Wenzel-Seifert, BK Kobilka - Trends in pharmacological …, 1999 - cell.com
The efficiency of interactions between G-protein-coupled receptors (GPCRs) and heterotrimeric
guanine nucleotide-binding proteins (G proteins) is greatly influenced by the absolute …

Functional differences between full and partial agonists: evidence for ligand-specific receptor conformations

R Seifert, K Wenzel-Seifert, U Gether… - Journal of Pharmacology …, 2001 - ASPET
The interaction of an agonist-bound G-protein-coupled receptor (GPCR) with its cognate G-protein
initiates a sequence of experimentally quantifiable changes in both the GPCR and G-…

[HTML][HTML] Different effects of Gsα splice variants on β2-adrenoreceptor-mediated signaling: the β2-adrenoreceptor coupled to the long splice variant of Gsα has …

R Seifert, K Wenzel-Seifert, TW Lee, U Gether… - Journal of Biological …, 1998 - ASBMB
The β 2 -adrenoreceptor (β 2 AR) couples to the G-protein G s to mediate adenylyl cyclase
activation. The splice variants of G s α differ by a 15-amino acid insert between the Ras-like …

Effects of guanine, inosine, and xanthine nucleotides on β2-adrenergic receptor/Gs interactions: evidence for multiple receptor conformations

R Seifert, U Gether, K Wenzel-Seifert, BK Kobilka - Molecular Pharmacology, 1999 - ASPET
The aim of our study was to examine the effects of different purine nucleotides [GTP, ITP, and
xanthosine 5′-triphosphate (XTP)] on receptor/G protein coupling. As a model system, we …

Multiple differences in agonist and antagonist pharmacology between human and guinea pig histamine H1-receptor

R Seifert, K Wenzel-Seifert, T Bürckstümmer… - … of Pharmacology and …, 2003 - ASPET
Species isoforms of histamine H 2 -, H 3 -, and H 4 -receptors differ in their pharmacological
properties. The study aim was to dissect differences between the human H 1 R (hH 1 R) and …

[HTML][HTML] G-protein-coupled receptors in HL-60 human leukemia cells

JF Klinker, K Wenzel-Seifert, R Seifert - General Pharmacology: The …, 1996 - Elsevier
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-…