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Literature DB >> 7756558

Activation of ryanodine receptors by flash photolysis of caged Ca2+.

Abstract

Flash photolysis of DM-nitrophen generates an extremely large [Ca2+] transient ("Ca2+ spike") at the start of each Ca2+ "step." The Ca2+ spike greatly increases the speed of activation of the ryanodine receptor channel ("supercharging") and could be responsible for apparent channel adaptation.

Entities: Chemical

Mesh：

Substances：

Year: 1995 PMID： 7756558 PMCID： PMC1281818 DOI： 10.1016/S0006-3495(95)80270-5

Source DB: PubMed Journal: Biophys J ISSN： 0006-3495 Impact factor: 4.033

13 in total

1. Response.

Authors: S Györke; M Fill
Journal: Science Date: 1994-02-18 Impact factor: 47.728

2. Abnormal ryanodine receptor channels in malignant hyperthermia.

Authors: M Fill; R Coronado; J R Mickelson; J Vilven; J J Ma; B A Jacobson; C F Louis
Journal: Biophys J Date: 1990-03 Impact factor: 4.033

3. Kinetics of reaction in calcium-activated skinned muscle fibres.

Authors: D G Moisescu
Journal: Nature Date: 1976-08-12 Impact factor: 49.962

4. Ryanodine receptor of skeletal muscle is a gap junction-type channel.

Authors: J Ma; M Fill; C M Knudson; K P Campbell; R Coronado
Journal: Science Date: 1988-10-07 Impact factor: 47.728

5. Supercharging: a method for improving patch-clamp performance.

Authors: C M Armstrong; R H Chow
Journal: Biophys J Date: 1987-07 Impact factor: 4.033

6. The calcium concentration clamp: spikes and reversible pulses using the photolabile chelator DM-nitrophen.

Authors: R S Zucker
Journal: Cell Calcium Date: 1993-02 Impact factor: 6.817

7. Ca(2+)-induced Ca2+ release in response to flash photolysis.

Authors: G D Lamb; M W Fryer; D G Stephenson
Journal: Science Date: 1994-02-18 Impact factor: 47.728

8. Rate of release of Ca2+ following laser photolysis of the DM-nitrophen-Ca2+ complex.

Authors: J A McCray; N Fidler-Lim; G C Ellis-Davies; J H Kaplan
Journal: Biochemistry Date: 1992-09-22 Impact factor: 3.162

9. Ryanodine receptor adaptation: control mechanism of Ca(2+)-induced Ca2+ release in heart.

Authors: S Györke; M Fill
Journal: Science Date: 1993-05-07 Impact factor: 47.728

10. Cytoplasmic Ca2+ does not inhibit the cardiac muscle sarcoplasmic reticulum ryanodine receptor Ca2+ channel, although Ca(2+)-induced Ca2+ inactivation of Ca2+ release is observed in native vesicles.

Authors: A Chu; M Fill; E Stefani; M L Entman
Journal: J Membr Biol Date: 1993-07 Impact factor: 1.843

10 in total

Review 1. Questions about adaptation in ryanodine receptors.

Authors: G D Lamb; D R Laver; D G Stephenson
Journal: J Gen Physiol Date: 2000-12 Impact factor: 4.086

2. Ca2+ activation and Ca2+ inactivation of canine reconstituted cardiac sarcoplasmic reticulum Ca(2+)-release channels.

Authors: A Schiefer; G Meissner; G Isenberg
Journal: J Physiol Date: 1995-12-01 Impact factor: 5.182

3. Inactivation of Ca2+ release channels (ryanodine receptors RyR1 and RyR2) with rapid steps in [Ca2+] and voltage.

Authors: D R Laver; G D Lamb
Journal: Biophys J Date: 1998-05 Impact factor: 4.033

4. A minimal gating model for the cardiac calcium release channel.

Authors: A Zahradníková; I Zahradník
Journal: Biophys J Date: 1996-12 Impact factor: 4.033

5. Adaptation of single cardiac ryanodine receptor channels.

Authors: P Vélez; S Györke; A L Escobar; J Vergara; M Fill
Journal: Biophys J Date: 1997-02 Impact factor: 4.033

6. A novel method for incorporation of ion channels into a planar phospholipid bilayer which allows solution changes on a millisecond timescale.

Authors: R Sitsapesan; R A Montgomery; A J Williams
Journal: Pflugers Arch Date: 1995-08 Impact factor: 3.657