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Key Documents

P4404

Sigma-Aldrich

Polyguanylic acid potassium salt

lyophilized powder

Synonyme(s) :

Poly(G) potassium salt

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About This Item

Numéro CAS:
54684-83-2
Numéro MDL:
MFCD00131976
Code UNSPSC :
41106305
Nomenclature NACRES :
NA.51

Source biologique

enzyme from (synthesis)

Niveau de qualité

200

Pureté

≥95% (TLC)

Forme

lyophilized powder

Qualité

≤5% free nucleotides

Solubilité

water: 19.60-20.40 mg/mL, clear to slightly hazy, colorless to light yellow

Température de stockage

−20°C

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Description générale

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.

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

Actions biochimiques/physiologiques

Polyguanylic acid acts as a ligand for scavenger receptor and reduces the surface expression neuropilin-1 in endothelial cells.

Notes préparatoires

Prepared from GDP using polynucleotide phosphorylase

Code de la classe de stockage

11 - Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Équipement de protection individuelle

Eyeshields, Gloves, type N95 (US)

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Consulter la Bibliothèque de documents

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
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
Principles of nucleic acid structure
Neidle, Stephen
Principles of nucleic acid structure (2018)
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
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