Acido ribonucleic
Acido ribonucleic (ARN o RNA) es un acido nucleic. Isto significa que ille consiste de un catena longe de unitates de nucleotide. Un nucleotide consiste de un basse nitrogenous nominate nucleobasse, un saccharo/sucre de ribose, e un phosphate. ARN es multo similarte con le ADN, ma ha differencias in alicun/pauc importante detailes de structura: in le cellula, ARN es monocatenari (consiste de un filo), durante que ADN es bicatenari; ARN nucleotides contine ribose durante que ADN contine deoxyribose (un typo de ribose ommite uno atomo de oxygeno); e ARN ha le base de uracil e non de thymine que es presente in ADN.
Acido ribonucleic |
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instantia de: structural class of chemical entities[*] |
subclasse de: nucleic acids[*], biopolymer[*], gene product[*], polyribonucleotide[*] |
parte de: RNA binding[*], RNA catabolic process[*], RNA metabolic process[*], RNA phosphodiester bond hydrolysis[*], RNA transport[*], RNA transmembrane transporter activity[*], protein-DNA-RNA complex[*], ribosoma, ribonucleoprotein granule[*], protein-lipid-RNA complex[*], HDL-containing protein-lipid-RNA complex[*], LDL-containing protein-lipid-RNA complex[*], ribonucleoprotein complex[*], RNA import into nucleus[*], RNA export from nucleus[*], RNA import into mitochondrion[*], gene silencing[*], RNA biosynthetic process[*], ATP-dependent activity, acting on RNA[*], catalytic activity, acting on RNA[*] |
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Commons: RNA |
Structura modificar
Cate nucleotide in ARN contine un saccharo/sucre de ribose, con carbones numerotate 1' a 5'. Le bases pote formar ligamines de hydrogeno inter cytosine e guanine, inter adenine e uracil e inter guanine e uracil. ligamines de hydrogeno[1] Altere interactiones es possibile[2]
Comparition con ADN modificar
ARN e ADN e differite in 3 characteristicas principal.
Typos de ARN modificar
Historia de discoperta modificar
Le acidos nucleic esseva discoperta in 1868 de Friedrich Miescher, que nominate le material 'nuclein' proque ille esseva trovate in le nucleus.[4] Le cellules prokaryotic que non ha un nucleus, contine acidos nucleic, es un discoperta tarde. Le role de ARN in le synthese del protein esseva suspectate in 1939.[5]Severo Ochoa ha ganiate le Premio Nobel in medicina in 1959 dupo illo ha discoperta como ARN es synthesite.[6]
Vide etiam modificar
Referentias modificar
- ↑ "Diversity of base-pair conformations and their occurrence in rRNA structure and RNA structural motifs" (December 2004). Journal of Molecular Biology 344 (5): 1225–49. doi: . PMID 15561141.
- ↑ Barciszewski J, Frederic B, Clark C (1999). RNA biochemistry and biotechnology. Springer, 73–87. ISBN 0792358627. OCLC 52403776.
- ↑ Tan ZJ, Chen SJ (2008). "Salt dependence of nucleic acid hairpin stability". Biophys. J. 95: 738–52. doi: . PMID 18424500.
- ↑ Dahm R (2005). "Friedrich Miescher and the discovery of DNA". Developmental Biology 278 (2): 274–88. doi: . PMID 15680349.
- ↑ Caspersson T, Schultz J (1939). "Pentose nucleotides in the cytoplasm of growing tissues". Nature 143: 602–3. doi: .
- ↑ Ochoa S (1959). Enzymatic synthesis of ribonucleic acid. Nobel Lecture.
Ligamines externe modificar
- RNA World website Archived 2007-03-14 at the Wayback Machine Collection de ligamines (structures, sequences, utiles, journals)
- Nucleic Acid Database Archived 2007-10-12 at the Wayback Machine Imagines de ADN, ARN e complexes.