نتایج جستجو برای: amino guanidine

تعداد نتایج: 210030  

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2003
I-Jy Chang Jennifer C Lee Jay R Winkler Harry B Gray

The kinetics of electron transfer from the triplet-excited Zn-porphyrin to a Ru(NH(3))(5)(His-33)(3+) complex have been measured in Zn-substituted ruthenium-modified cytochrome c under denaturing conditions. In the folded protein, the electron-tunneling rate constant is 7.5 x 10(5) s(-1). As the protein is denatured with guanidine hydrochloride, a faster adiabatic electron-transfer reaction app...

2003
ROBERT C. WARNER KEITH CANNAN R. C. Warner R. K. Cannan

Considerable amounts of ammonia may be formed during the alkaline hydrolysis of proteins. Osborne, Leavenworth, and Brautlecht (1) were of the opinion that the amide and guanidine groups of the protein were the sole source of this ammonia.” In the alkaline hydrolysis of wheat gliadin, however, Vickery (2) observed a slow formation of ammonia from unidentified sources. The significance of the ob...

Journal: :Blood 1995
A Chaudhuri J Polyakova V Zbrzezna A O Pogo

The coding and untranslated flanking sequences of Duffy gene (FY) in humans and simians are in a single exon. The difference between the two codominant alleles, FY*A and FY*B, is a single change at nucleotide 306: guanidine is in FY*A and adenine is in FY*B. This produces a codon change that subsequently modifies the amino acid at position 43 of gpFy, the major subunit of the Duffy blood group ...

Journal: :The Journal of biological chemistry 1974
F De Lorenzo P Di Natale A N Schechter

The histidyl-tRNA synthetase from Salmonella typhimurium was purified to homogeneity by methods described previously. The molecular weight of the native enzyme was determined as 78,000 by high speed equilibrium centrifugation and as 92,000 by gel filtration; a subunit molecular weight of about 40,000 was found by centrifugation in 6 M guanidine HCl, and by sodium dodecyl sulfate gel electrophor...

Journal: :Experimental neurology 1980
M Galvan P Grafe G ten Bruggencate

Guanidine administration may be beneficial in the treatment of amyotrophic lateral sclerosis and related diseases; however, the actions of guanidine on the mammalian central nervous system have not been investigated. We studied the effects of this compound on neuronal properties and synaptic transmission in isolated slices of guinea pig olfactory cortex using intraand extracellular recording me...

Journal: :Biotechnology and bioengineering 1992
T J Naglak H Y Wang

Overall protein release greater than 75% in less than 1 h can be attained by exposing exponentially growing Escherichia coli cells to 0.4 M guanidine plus 0.5% Triton X-100 at 37 degrees C in medium. Cell growth stops immediately upon addition of the chemicals, but the cells are not lysed. Guanidine concentrations lower than 0.2 M, in conjunction with 0.5% Triton X-100, do not release significa...

Journal: :The Biochemical journal 1969
D N Black F Brown

The RNA-dependent RNA polymerase induced in baby-hamster kidney cells by infection with foot-and-mouth-disease virus can be detected as early as 60min. after infection, which is 60min. before viral RNA synthesis commences. The time at which the polymerase can first be detected coincides with the latest time at which actinomycin D (50mug./10(7) cells) or guanidine (1mg./10(7) cells) inhibits vir...

2016
Estelle Sfecci Thierry Lacour Philippe Amade Mohamed Mehiri

Sessile marine sponges provide an abundance of unique and diversified scaffolds. In particular, marine guanidine alkaloids display a very wide range of biological applications. A large number of cyclic guanidine alkaloids, including crambines, crambescins, crambescidins, batzelladines or netamins have been isolated from Poecilosclerida marine sponges. In this review, we will explore the chemodi...

Journal: :Journal of Biological Chemistry 1917

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