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CAPSIDE [1 record]

Record 1 2013-07-08

English

Subject field(s)
  • Molecular Biology
  • Microbiology and Parasitology
DEF

The protein coat that surrounds the nucleic acid (DNA or RNA) core of viruses.

OBS

They have either helical or icosahedral symmetry. In either case they are made up of a large number of small protein units (protomers), which are associated in structural units (capsomers).

French

Domaine(s)
  • Biologie moléculaire
  • Microbiologie et parasitologie
DEF

Enveloppe protéique des virus contenant l'acide nucléique et résultant de l'assemblage d'unités appelées capsomères.

OBS

La capside protège le génome du virus à l'intérieur de la nucléocapside et, pour les virus nus, dépourvus d'enveloppe, elle intervient dans l'attachement de la particule virale à la cellule-hôte. On distingue deux catégories de capsides : les capsides tubulaires à symétrie hélicoïdale et les capsides icosaédriques à symétrie cubique. La nature de la capside est un critère de la classification des virus.

OBS

capside : terme normalisé par l'AFNOR.

Spanish

Campo(s) temático(s)
  • Biología molecular
  • Microbiología y parasitología
DEF

Cubierta proteica que protege el genoma ADN [ácido desoxirribonucleico] o ARN [ácido ribonucleico] de una partícula vírica o virión, compuesta de diversas subunidades proteicas denominadas capsómeros.

OBS

En España es igual de frecuente la variante cápsida, pero en Hispanoamérica predomina la grafía cápside.

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