Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Alexander J. Murphy"'
Autor:
Anne K. Engmann, John J. Hatch, Prakruti Nanda, Priya Veeraraghavan, Abdulkadir Ozkan, Alexandros Poulopoulos, Alexander J. Murphy, Jeffrey D. Macklis
Publikováno v:
Nat Protoc
During neuronal development, growth cones (GCs) of projection neurons navigate complex extracellular environments to reach distant targets, thereby generating extraordinarily complex circuitry. These dynamic structures located at the tips of axonal p
Autor:
Alexander J. Murphy, Richard J. Coll
Publikováno v:
Biochemistry. 30:1456-1461
The CaATPase of sarcoplasmic reticulum was reacted with ({gamma}-{sup 32}P)ATP to form the covalent phosphoenzyme intermediate. Noncompetitive inhibition by reactive red-120 and chelation of calcium allowed the authors to monitor single-turnover kine
Reaction of a carbodiimide adduct of ATP at the active site of sarcoplasmic reticulum calcium ATPase
Autor:
Alexander J. Murphy
Publikováno v:
Biochemistry. 29:11236-11242
An adduct of a carbodiimide and ATP was synthesized from 1-ethyl-3-[3-(dimethylamino)propyl]carbodiimide (EDC) and the nucleotide. Despite its limited stability (t 1/2 for hydrolysis of about 5 min at 25 o C), it was shown to react with and inactivat
Publikováno v:
FEBS letters. 335(1)
The sarcoplasmic reticulum Ca 2+ -ATPase loses hydrolytic activity and the ability to be phosphorylated by P i following incubation with EDC [1-ethyl-3-(3-dimethylaminopropyl)carbodiimide]. 4 nmol of tempamine per mg SR protein can be coupled to eith
Autor:
Alexander J. Murphy, Stefan Highsmith
Publikováno v:
Biochemistry. 31(2)
The ionic strength dependence of the binding of rabbit skeletal muscle myosin subfragment 1, S1, to F-actin in the presence of saturating concentrations of MgATP or MgADP was analyzed in order to determine the association constants at zero ionic stre
Autor:
Alexander J. Murphy
Publikováno v:
Biochemistry. 15:4492-4496
Modification of calcium-translocating sarcoplasmic reticulum membranes (SR) with 5,5'-dithiobis(2-nitrobenzoate) (Nbs2) reveals four classes (kinetic sets) of sulfhydryl groups. Of the 25 mol/1.5 X 10(5) G OF SR protein (i.e., containing 1 mol of ATP
Autor:
Alexander J. Murphy
Publikováno v:
Biochemical and Biophysical Research Communications. 70:1048-1054
Reaction of rabbit sarcoplasmic reticulum vesicles with the arginyl residue reagent 2,3-butanedione results in the inactivation of the Ca+2-dependent ATPase activity. At pH 6.9, 25°, with 10 mM butanedione the pseudo-first order rate constant is 0.0
Autor:
Alexander J. Murphy
Publikováno v:
Archives of Biochemistry and Biophysics. 180:114-120
Incubation of sarcoplasmic reticulum membranes (SR) with pyridoxal-5′-phosphate (PLP) followed by NaBH4 reduction results in a progressive loss of calcium-dependent ATPase activity. The rate constants and extents of inactivation are not linear func
Autor:
Alexander J. Murphy
Publikováno v:
Biochemical and Biophysical Research Communications. 70:160-166
Treatment of rabbit sarcoplasmic reticulum vesicles with the cross-linking agent, cupric phenanthroline, causes production of high-molecular weight bands on SDS-gel electrophoresis. A plot of log mol wt vs mobility indicates that the main band produc
Autor:
Alexander J. Murphy, Richard J. Coll
Publikováno v:
FEBS Letters. 187:131-134
Sarcoplasmic reticulum CaATPase hydrolysis of high concentrations of ATP was studied in the presence of ADP. The results obtained were best described as noncompetitive inhibition; added product lowered the Vmax but did not affect the slopes of Eadie-