Abstract:
:Retroviral capsid assembly can occur by either of two distinct morphogenic processes: in type C viruses, the capsid assembles and buds at the plasma membrane, while in type B and D viruses, the capsid assembles within the cytoplasm and is then transported to the plasma membrane for budding. We have previously reported that a single-amino-acid substitution of a tryptophan for an arginine in the matrix protein (MA) of Mason-Pfizer monkey virus (MPMV) converts its capsid assembly from that of a type D retrovirus to that of the type C viruses (S. S. Rhee and E. Hunter, Cell 63:77-86, 1990). Here we identify a region of 18 amino acids within the MA of MPMV that is responsible for type D-specific morphogenesis. Insertion of these 18 amino acids into the MA of type C Moloney murine leukemia virus causes it to assemble an immature capsid in the cytoplasm. Furthermore, fusion of the MPMV MA to the green fluorescent protein resulted in altered intracellular targeting and a punctate accumulation of the fusion protein in the cytoplasm. These 18 amino acids, which are necessary and sufficient to target retroviral Gag polyproteins to defined sites in the cytoplasm, appear to define a novel mammalian cytoplasmic targeting/retention signal.
journal_name
J Viroljournal_title
Journal of virologyauthors
Choi G,Park S,Choi B,Hong S,Lee J,Hunter E,Rhee SSdoi
10.1128/JVI.73.7.5431-5437.1999subject
Has Abstractpub_date
1999-07-01 00:00:00pages
5431-7issue
7eissn
0022-538Xissn
1098-5514journal_volume
73pub_type
杂志文章abstract::Interallelic complementation between certain temperature-sensitive mutants of gene 42 of bacteriophage T4 was demonstrated by measuring the incorporation of labeled thymine into DNA. ...
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doi:10.1128/JVI.64.1.354-360.1990
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pub_type: 杂志文章
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.64.8.3661-3673.1990
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journal_title:Journal of virology
pub_type: 杂志文章
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更新日期:1982-03-01 00:00:00
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pub_type: 杂志文章
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journal_title:Journal of virology
pub_type: 杂志文章
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更新日期:1974-02-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
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pub_type: 杂志文章
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