Defining the borders of the chicken proto-fps gene, a precursor of Fujinami sarcoma virus.
Defining the borders of the chicken proto-fps gene, a precursor of Fujinami sarcoma virus.
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定义鸡原型 fps 基因的边界,该基因是藤波肉瘤病毒的前体。
DOI:
10.1016/0042-6822(85)90014-5
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发表时间:
1985
期刊:
影响因子:
3.7
通讯作者:
Duesberg,PH
中科院分区:
文献类型:
--
作者:
Pfaff,SL;Zhou,RP;Young,JC;Hayflick,J;Duesberg,PH
The transforming (onc) genes of retroviruses contain specific sequences, derived from as yet poorly defined, normal cellular genes, termed proto-oncgenes. Proto-oncgenes must be defined to explain their docility compared to the oncogenicity of the viral derivatives. Here we set out to determine the borders of the chicken proto-fpsgene from which theoncgenes of avian Fujinami (FSV) and PRC sarcoma viruses (PRCSV) are derived. Theseoncgenes are hybrids of an element from thegaggene of retroviruses (Δgag) linked to a 2.8-kb domain from proto-fps. To identify the 5′ border of proto-fpswe have sequenced 1.5 kb beyond the 5′ border of overlap with viralfpsutilizing a proto-fpsclone derived previously. A possible promoter was identified that maps 736 nucleotides from this border. The 736 nucleotides contain two possible exons with 121 codons, and short regions of homology with the Δgagtermini of FSV and PRCII. A translation stop codon and an adjacent polyadenylation signal were identified just prior to the 3′ border of overlap with viralfpswithin a 1.15-kb sequence of a newly isolated proto-fpsclone. Comparing four exons within this 1.15 kb proto-fpssequence with knownfpsequivalents of FSV and PRCSV, we have detected strain-specific, but no common point mutations in each viral genome. A 3.3-kb polyadenylated proto-fpsmRNA was detected in chicken liver RNA by gel electrophoresis and hybridization with proto-fpsDNA. We conclude that the coding capacity of proto-fpsis just over 3 kb, consistent with the size of the putative proto-fpsprotein of 98 kDa and hence slightly larger than that of viralfps. Thus proto-fpsand the viral Δgag-fpsgenes each contain distinct 5′ regulatory and coding sequences and share the 3′ terminalfpsdomains. It is suggested that this difference, rather than scattered point mutations, is responsible for the oncogenic function of the viral genes and the unknown cellular function of proto-fps.
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影响因子:
5.4
作者:
C. C. Huang;C. Hammond;J. Bishop
通讯作者:
J. Bishop
影响因子:
3.7
作者:
Lee,WH;Phares,W;Duesberg,PH
通讯作者:
Duesberg,PH
DOI:
10.1073/pnas.80.8.2146
发表时间:
1983
影响因子:
11.1
作者:
Watson,DK;Reddy,EP;Duesberg,PH;Papas,TS
通讯作者:
Papas,TS
影响因子:
3.7
作者:
Seeburg,PH;Lee,WH;Nunn,MF;Duesberg,PH
通讯作者:
Duesberg,PH
影响因子:
5.6
作者:
HUANG, CC;HAMMOND, C;BISHOP, JM
通讯作者:
BISHOP, JM