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POLYRIBOSOME [2 records]
Record 1 - internal organization data 2013-11-15
Record 1, English
Record 1, Subject field(s)
- Genetics
Record 1, Main entry term, English
- polypeptide chain termination
1, record 1, English, polypeptide%20chain%20termination
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- termination of the polypeptide chain 2, record 1, English, termination%20of%20the%20polypeptide%20chain
correct
- chain termination 2, record 1, English, chain%20termination
correct
- termination 3, record 1, English, termination
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
The last step in translation, i. e. the release of the completed polypeptide from the polyribosome and disengagement of ribosomes from mRNA. It is directed by specific terminator codons(UAA, UAG and UGA) in mRNA which are recognized by special release factors. When translocation places one of the terminator codons in the ribosomal A site, the ribosome does not bind an aminoacyl tRNA-elongation factor-GTP complex. Instead it binds a release factor which activates peptidyl transferase, which then hydrolyzes the bond joining the polypeptide to tRNA in the ribosomal P site. 2, record 1, English, - polypeptide%20chain%20termination
Record 1, French
Record 1, Domaine(s)
- Génétique
Record 1, Main entry term, French
- terminaison
1, record 1, French, terminaison
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- terminaison de la chaîne peptidique 2, record 1, French, terminaison%20de%20la%20cha%C3%AEne%20peptidique
correct, feminine noun
- terminaison de la chaîne protéique 2, record 1, French, terminaison%20de%20la%20cha%C3%AEne%20prot%C3%A9ique
correct, feminine noun
- terminaison de la chaîne 2, record 1, French, terminaison%20de%20la%20cha%C3%AEne
correct, feminine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Dernière étape de la biosynthèse des protéines. Elle succède à l'initiation et à l'élongation. Il existe sur le mRNA 3 codons différents chargés de signaler cette terminaison UAA, UAG, et UGA. Trois protéines spécifiques appelées facteurs de libération permettent la libération du polypeptidyl-tRNA du ribosome. Ils se lient au ribosome et provoquent un déplacement du polypeptidyl-tRNA du site A sur le site P. La liaison ester entre la chaîne polypeptidique et le dernier tRNA est ensuite hydrolysée, vraisemblablement par la peptidyl transférase, dont l'action catalytique semble modifiée par la fixation des facteurs de libération. 2, record 1, French, - terminaison
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Genética
Record 1, Main entry term, Spanish
- terminación
1, record 1, Spanish, terminaci%C3%B3n
feminine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2012-03-27
Record 2, English
Record 2, Subject field(s)
- Genetics
- Biochemistry
- Molecular Biology
Record 2, Main entry term, English
- polysome
1, record 2, English, polysome
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
- polyribosome 2, record 2, English, polyribosome
correct
- ergosome 3, record 2, English, ergosome
correct, obsolete
Record 2, Textual support, English
Record number: 2, Textual support number: 1 DEF
A multiribosomal structure representing a linear array of ribosomes held together by messenger RNA. 3, record 2, English, - polysome
Record number: 2, Textual support number: 1 OBS
Probably the number of ribosomes is related to the size of the mRNA chain. Polysomes represent the "active complexes" in cellular protein synthesis and are able to incorporate amino acids into polypeptides both in vivo and in vitro. 3, record 2, English, - polysome
Record 2, French
Record 2, Domaine(s)
- Génétique
- Biochimie
- Biologie moléculaire
Record 2, Main entry term, French
- polysome
1, record 2, French, polysome
correct, masculine noun, standardized
Record 2, Abbreviations, French
Record 2, Synonyms, French
- polyribosome 2, record 2, French, polyribosome
correct, masculine noun, standardized
- ergosome 3, record 2, French, ergosome
correct, masculine noun, obsolete
Record 2, Textual support, French
Record number: 2, Textual support number: 1 DEF
Complexe constitué par une molécule d'ARNm et par des ribosomes. [Définition normalisée par l'AFNOR et reproduite avec son autorisation.] 4, record 2, French, - polysome
Record number: 2, Textual support number: 1 OBS
La synthèse protéique a lieu sur ce complexe. [Observation reproduite avec l'autorisation de l'AFNOR.] 4, record 2, French, - polysome
Record number: 2, Textual support number: 2 OBS
polysome; polyribosome : termes normalisés par l'AFNOR et publiés au Journal officiel de la République française le 22 septembre 2000. 5, record 2, French, - polysome
Record 2, Spanish
Record 2, Campo(s) temático(s)
- Genética
- Bioquímica
- Biología molecular
Record 2, Main entry term, Spanish
- polisoma
1, record 2, Spanish, polisoma
correct, masculine noun
Record 2, Abbreviations, Spanish
Record 2, Synonyms, Spanish
Record 2, Textual support, Spanish
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