Ịchọta Mkpa nke Otu n'ime Nucleotides anọ dị mkpa maka ndụ

Kedu ihe bụ guanine?

Otu n'ime ihe anọ bụ isi ụlọ nke DNA na RNA bụ guanine. Ọ bụ ihe nwere nitrogen pụrụ iche nke jikọtara adenine, cytosine na thymine (ma ọ bụ uracil na RNA) iji mepụta koodu mkpụrụ ndụ ihe nketa. Ihe na-eme ka guanine dị iche iche bụ usoro ya dị mgbagwoju anya: ngwakọta nke pyrimidine na imidazole yiri mgbaaka, na-ekepụta purine. Usoro ya bụ C₅H₅N₅O.

Njirimara anụ ahụ na Ọdịdị

Guanine na-apụta dị ka ntụ ntụ ọcha dị mfe ma nwee ebe mgbaze dị elu nke ukwuu, gburugburu 360ºC. Nke a bụ n'ihi na a na-ejikọta kristal ya site na njikọ hydrogen siri ike. Ọ bụ ezie na ọ naghị agbaze na mmiri. Enwere ike igbari guanine na acid diluted ma ọ bụ ntọala. Ibu molekụla ya bụ 151.13 g/mol, na njupụta ya gbakọrọ bụ nnukwu 2.200 g/cm³.

Ọrụ ndu na ngwa

Enweghị guanine, ndụ agaghị adị. Ọ na-emepụta njikọ siri ike na cytosine na DNA na RNA site na njikọ hydrogen atọ. Nke a na-eme ka ihe owuwu helix abụọ a ma ama na-eme ka a hụ na ngbanwe DNA ziri ezi. Mana ọrụ guanine akwụsịghị ebe ahụ. Ihe mmepụta ya, dị ka GTP (guanosine triphosphate), na-arụ ọrụ dị mkpa na usoro cellular dị ka akara ngosi na mmepụta protein.

Guanine bụ nke otu a na-akpọ purine bases, akụkụ dị mkpa nke DNA na ụmụ irighiri ihe RNA.

Akụkọ Nchọpụta

N'afọ dị anya nke 1844, otu onye German chemist aha ya bụ Julius Bodo Unger mbụ chọpụtara guanine. Ihe dị iche? O weputara ya na guano, ya mere aha ya. Ka oge na-aga, ndị ọkà mmụta sayensị amụtala ọtụtụ ihe gbasara usoro guanine na ọrụ dị mkpa ọ na-arụ na mkpụrụ ndụ ihe nketa na ihe ndị dị ndụ.

isi mmalite

• https://en.wikipedia.org
• https://www.encyclopedia.com