• RyRs

    Traces illustrating RYR single channel activity in the planar lipid bilayer recorded on the Orbit 16.

Ryanodine Receptors | RyRs

Family:
Ryanodine receptor family

Topology and Members:
Three members are known in human:
RyR1: Is primarily expressed in skeletal muscle
RyR2: Is primarily expressed in myocardium
RyR3: Is expressed more widely, but especially in the brain
The channels contain six transmembrane helices, are composed of mostly homotetramers (heterotetramers are as well described) and complex with further proteins which modulate the channel functions.

Function:
Ryanodine receptors form a class of intracellular calcium channels in various forms of excitable animal tissue. Located in the sarcoplasmic/ endoplasmic reticulum membrane, the channels mediate the release of calcium ions from intracellular stores into the cytoplasm.

Data and Applications

Ryanodine Receptor - Application of Na-ATP and Ryanodine

Icon Orbit   Orbit 16 RyanodineR 1Orbit 16 and applications:
Data were kindly provided by Ionera.

Traces illustrating RYR single channel activity in the planar lipid bilayer recorded on the Orbit 16.
The RYR channel was reconstituted via fusion of sarcoplasmic reticulum vesicles with preformed asolectin bilayer.

(A) Activity after vesicle fusion and buffer exchange on cis-side. (B) 120 s after addition of 1 mM Na-ATP to the cis-side. (C) 120 s after addition of 5 µM Ryanodine to the cis-side.
Conditions: Trans-side: 53 mM Ba(OH)2, 1 mM Ca2+; Cis-side: 150 nM Ca2+, VHold: 0 mV in all cases

Publications

2016 - Pore architecture of TRIC channels and insights into their gating mechanism

icon pap  Port-a-Patch and   icon vpp   Vesicle Prep Pro publication in Nature (2016)

 

 

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