Monomers, Dimers, and Oligomers of Pyroglutamate Modified Synuclein Fragments Exhibit Distinct Biophysical Characteristics Distinct roles of the NH2 and COOH terminal domains of the protein inhibitor of activated signal transducer and activator of transcription (STAT) 1 (PIAS1) in cytokine induced PIAS1Stat1 interaction PNAS P Rex1 limits the agonist induced internalization of GPCRs independently of its Rac GEF activity ScienceDirect Inhibition of Transmitter Release Correlates with the Proteolytic Activity of Tetanus Toxin and Botulinus Toxin A in Individual Cultured Synapses of Hirudo medicinalis Journal of Neuroscience