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Dynorphin A 1-10

CAS No. : 79994-24-4

MCE 站：Dynorphin A 1-10

产品活性：Dynorphin A (1-10) 是一种内源性的阿片样神经肽，与 κ 阿片受体 (κ-opioid receptor) 结合。Dynorphin A (1-10) 也阻断 NMDA 激活的电流，IC₅₀ 为 42.0 μM。

研究领域：GPCR/G Protein  |  Neuronal Signaling  |  Membrane Transporter/Ion Channel

作用靶点：Opioid Receptor  |  iGluR

In Vitro: Dynorphin A (1-10) binds in the transmembrane domain of the κ-receptor. The non-opioid actions of various forms of Dynorphin A (DynA) are examined on N-methyl-D-aspartate (NMDA) receptor channels in isolated rat trigeminal neurons using the whole-cell patch recording technique. All the dynorphins tested blocked NMDA-activated currents. The blocking actions are voltage-independent. The IC₅₀ is 42.0 μM for DynA(1-10). To determine if shorter dynorphins have the similar blocking property, we examined the action of DynA(1-10) at different membrane potentials. DynA(1-10) blocks I_NMDA to a similar extent as the membrane potentials changed from -80 to +60 mV. Thus, despite a 160-fold difference in the apparent affinities, DynA(1-32) and DynA(1-10) both exert voltage-independent actions on NMDA receptors.

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