P4404
Polyguanylic acid potassium salt
≥95% (TLC), enzyme from (synthesis), lyophilized powder
Synonym(s):
Poly(G) potassium salt
Product Name
Polyguanylic acid potassium salt, lyophilized powder
biological source
enzyme from (synthesis)
assay
≥95% (TLC)
form
lyophilized powder
quality
≤5% free nucleotides
solubility
water: 19.60-20.40 mg/mL, clear to slightly hazy, colorless to light yellow
storage temp.
−20°C
Quality Level
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Application
Polyguanylic acid (PolyG) is used to study the effects of ionizing radiation on formation and stability of G-quadruplex structures and as a target molecule for physicochemical studies of electronic excitation (vibrational spectra) of guanosine.
Polyguanylic acid potassium salt has been used:
- as a ligand for surface neuropilin-1 (NRP1) for internalization studies
- for intercalation studies with trisubstituted and disubstituted triazole-linked phenyl derivatives CL41, CL42 and CL2r50 using voltammetry method
- as a synthetic polynucleotide for agarose gel electrophoresis analysis
Biochem/physiol Actions
Polyguanylic acid acts as a ligand for scavenger receptor and reduces the surface expression neuropilin-1 in endothelial cells.
General description
Polyguanylic acid takes up a four-stranded helical structure. It is synthetically produced in Thermus thermophilus from guanosine diphosphate (GDP) and its synthesis is catalyzed by the enzyme polynucleotide phosphorylase.
Preparation Note
Prepared from GDP using polynucleotide phosphorylase
Storage Class
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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Nathan R Deleault et al.
The Journal of biological chemistry, 280(29), 26873-26879 (2005-05-27)
Little is currently known about the biochemical mechanism by which induced prion protein (PrP) conformational change occurs during mammalian prion propagation. In this study, we describe the reconstitution of PrPres amplification in vitro using partially purified and synthetic components. Overnight
Y Kikuchi et al.
Biochimica et biophysica acta, 476(4), 287-294 (1977-06-17)
Polyguanylic acid (poly(G)) was synthesized from GDP in a yield of 60-75% by Thermus thermophilus polynucleotide phosphorylase (polyribonucleotide: orthophosphate nucleotidyltransferase, EC 2.7.7.8) at 70 degrees C, pH 8.5 in the presence of Mg2+. The yield was dependent on the ratio
Venugopal Karunakaran et al.
Journal of the American Chemical Society, 131(16), 5839-5850 (2009-04-04)
Guanosine monophosphate (GMP) in aqueous solutions has been studied with femtosecond broad-band transient absorption spectroscopy and by quantum-mechanical calculations. The sample was excited at 267 or 287 nm and probed between 270 and 1000 nm with 100 fs resolution, for
Principles of nucleic acid structure
Neidle, Stephen
Principles of nucleic acid structure (2018)
Zhong-yuan Kan et al.
Nucleic acids research, 35(11), 3646-3653 (2007-05-10)
Chromosomes in vertebrates are protected at both ends by telomere DNA composed of tandem (TTAGGG)n repeats. DNA replication produces a blunt-ended leading strand telomere and a lagging strand telomere carrying a single-stranded G-rich overhang at its end. The G-rich strand
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