Results 1 to 10 of about 1,340 (95)
Sulfur incorporation into biomolecules: recent advances. [PDF]
Sulfur is an essential element for a variety of cellular constituents in all living organisms and adds considerable functionality to a wide range of biomolecules. The pathways for incorporating sulfur into central metabolites of the cell such as cysteine,
Chatterjee S, Hausinger RP.
europepmc +2 more sources
Thermodynamic and structural contributions of the 6-thioguanosine residue to helical properties of RNA. [PDF]
Thionucleotides, especially 4-thiouridine and 6-thioguanosine, are photosensitive molecules that photocrosslink to both proteins and nucleic acids, and this feature is a major reason for their application in various investigations.
Gładysz M +4 more
europepmc +2 more sources
Oxidatively-generated damage to DNA and proteins mediated by photosensitized UVA. [PDF]
UVA accounts for about 95% of the solar ultraviolet (UV) radiation that reaches Earth and most likely contributes to human skin cancer risk. In contrast to UVB, which comprises the remaining 5% and is absorbed by DNA nucleobases to cause direct ...
Brem R, Guven M, Karran P.
europepmc +2 more sources
Thionucleotides in the transfer ribonucleic acids of Pseudomonas aeruginosa and Escherichia coli [PDF]
Y S, Rao, B, Thimmappayya, J D, Cherayil
openaire +3 more sources
The common nucleobases purine (adenine and guanine) and pyrimidine (cytosine, uracil and thymine) in naturally occurring nucleosides and their 3′,5′-cyclic phosphates are β-bonded to the anomeric carbon (C1′) of d-ribose or its 2′-deoxy congener.
Kjell Undheim
doaj +1 more source
Studies on tyrosine transfer ribonucleic acid, a sulfur-rich species from Escherichia coli.
A purified species of tyrosine transfer RNA has been isolated by countercurrent techniques and shown to contain 2 4-thiouridylate residues per molecule. These thionucleotides may be titrated quantitatively with p-hydroxymercuribenzoate.
M. Lipsett, B. P. Doctor
semanticscholar +1 more source
The formation of disulfide bonds between thionucleotides of transfer RNA has been postulated to occur during oxidation with iodine. In this paper, the actual isolation of 4-thiouridylate disulfide from oxidized transfer RNA is described.
M. Lipsett
semanticscholar +1 more source
The correspondence between the magnitude of the free energy of hydrolysis of ATP and the f ree energy involved in the Ca2+ gradient in sarcoplasmic reticulum (SR) vesicles was tested by substitution of either diastereomers of adenosine 5’-0-(2 ...
E. Pintado, A. Scarpa, M. Cohn
semanticscholar +1 more source
T4 DNA polymerase converts (Sp)-2'-deoxyadenosine 5'-O-(1-thio[1-18O2]triphosphate) to 2'-deoxyadenosine 5'-O-[18O]-phosphorothioate in the presence of poly(d(A-T).poly(d(A-T)) template-primer. Control experiments involving either omitting the poly(d(A-T)
A. Gupta, C. Debrosse, S. Benkovic
semanticscholar +1 more source
31P NMR measurements have been found to be a convenient means for simultaneously measuring the concentrations of several species in the equilibrium mixtures of the reactions catalyzed by arginine kinase and creatine kinase. MgATP + X in equilibrium MgADP
C. L. Lerman, M. Cohn
semanticscholar +1 more source

