Most Professional Factory Supply High Qulity Guanine CAS 73-40-5

Chemical Structure: Guanine is a heterocyclic organic compound with the chemical formula C5H5N5O, characterized by a fused pyrimidine-imidazole ring structure.

Nucleobase Classification: Guanine is classified as a purine nucleobase, one of the four nitrogenous bases found in DNA and RNA, playing a crucial role in genetic coding and protein synthesis.

Hydrogen Bonding: Guanine is involved in hydrogen bonding interactions with cytosine through three hydrogen bonds, forming one of the complementary base pairs essential for the double-helix structure of DNA.

Biological Role: Guanine serves as a fundamental building block of nucleic acids (DNA and RNA), where it participates in the storage and transmission of genetic information, as well as in various cellular processes.

Codon Formation: Guanine, along with adenine, cytosine, and thymine (in DNA) or uracil (in RNA), forms codons, which are triplets of nucleotides that encode specific amino acids during protein synthesis.

Chemical Properties: Guanine is a white, crystalline solid with low solubility in water but higher solubility in alkaline solutions. It exhibits characteristic absorption spectra in ultraviolet (UV) light.

Biological Function: In addition to its role in nucleic acids, Guanine also serves as a precursor for the synthesis of various biomolecules, including guanosine triphosphate (GTP), cyclic guanosine monophosphate (cGMP), and other guanine-containing metabolites.

Purine Metabolism: Guanine is metabolized through the purine salvage pathway, where it can be synthesized de novo or recycled from nucleotide breakdown to maintain cellular nucleotide pools.

Mutagenic Potential: Guanine can undergo chemical modifications or oxidative damage, leading to DNA lesions such as 8-oxo-7,8-dihydroguanine (8-oxoG), which can result in mutagenesis and contribute to carcinogenesis if not repaired properly.

Anticancer Therapies: Guanine analogs, such as 6-thioguanine and 6-mercaptopurine, are used in cancer chemotherapy to interfere with nucleic acid synthesis and disrupt cancer cell proliferation.

Diagnostic Applications: Guanine derivatives, including fluorescent analogs and probes, are utilized in various molecular biology techniques, such as DNA sequencing, PCR (polymerase chain reaction), and fluorescence in situ hybridization (FISH).

Biophysical Studies: Guanine's unique spectral properties, including fluorescence and UV absorption, are exploited in biophysical studies to investigate nucleic acid structure, dynamics, and interactions with ligands or proteins.

Environmental Significance: Guanine, along with other nucleobases, can be found in environmental samples such as water, soil, and meteorites, providing insights into the origins of life and extraterrestrial chemistry.

Pharmacological Targets: Guanine-based drugs or drug candidates, targeting enzymes involved in purine metabolism or nucleic acid synthesis, are explored for the treatment of various diseases, including cancer, viral infections, and autoimmune disorders.

Regulatory Considerations: Guanine and its derivatives are subject to regulatory oversight, including safety assessments, quality control standards, and guidelines for their use in pharmaceuticals, diagnostics, and research applications.