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单词 polyribosome
释义

polyribosomen.

Brit. /ˌpɒlɪˈrʌɪbəsəʊm/, U.S. /ˌpɑliˈraɪbəˌsoʊm/
Origin: Formed within English, by compounding. Etymons: poly- comb. form, ribosome n.
Etymology: < poly- comb. form + ribosome n. Compare polysome n. 1, polyribo- comb. form.
Molecular Biology.
= polysome n. 1.
ΘΚΠ
the world > life > biology > biological processes > genetic activity > genetic components > [noun] > nucleic acid > RNA > ribosome
ribosome1958
polyribosome1962
polysome1962
monosome1964
1962 J. R. Warner et al. in Science 28 Dec. 1399/2 We have been able to show that the site of hemoglobin synthesis in vivo is not the single ribosome but rather a cluster of ribosomal particles, which we have called a ‘polyribosome’ or simply a polysome.
1973 Sci. Amer. Apr. 41/1 As the synthesis of the messenger RNA proceeds, giving rise to a longer strand of RNA, more ribosomes attach themselves to the strand. They form a string called a polyribosome, which continues the translation of the elongating messenger RNA.
2001 Proc. National Acad. Sci. U.S.A. 98 12027/1 Peroxisomal matrix enzymes are synthesized on cytosolic polyribosomes.

Derivatives

ˌpolyriboˈsomal adj.
ΘΚΠ
the world > life > biology > biological processes > genetic activity > genetic components > [adjective] > of nucleic acid > ribosome
ribosomal1959
polyribosomal1962
1962 Science 28 Dec. 1401/2 An intrinsic property of the polyribosomal unit.
1970 Sci. Jrnl. Apr. 36 In the unaltered cytoplasm surrounding these areas ribosomes were gathered into polyribosomal aggregates, indicating very active synthesis of protein.
1992 W. T. Greenhough et al. in I. Gormezano & E. A. Wasserman Learning & Memory x. 222 During reactive synaptogenesis in the dentate gyrus, newly forming synapses appeared to be characterized by the presence of polyribosomal aggregates.
This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022).
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n.1962
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