TRANSFER-RNA GENES FROM DICTYOSTELIUM-DISCOIDEUM ARE FREQUENTLY ASSOCIATED WITH REPETITIVE ELEMENTS AND CONTAIN CONSENSUS BOXES IN THEIR 5'-FLANKING AND 3'-FLANKING REGIONS

被引:38
|
作者
HOFMANN, J
SCHUMANN, G
BORSCHET, G
GOSSERINGER, R
BACH, M
BERTLING, WM
MARSCHALEK, R
DINGERMANN, T [1 ]
机构
[1] UNIV ERLANGEN NURNBERG, FAK MED, INST BIOCHEM, FAHRSTR 17, W-8520 ERLANGEN, GERMANY
[2] UNIV ERLANGEN NURNBERG, MAX PLANCK GESELL KLIN ARBEITSGRP RHEUMATOL, W-8520 ERLANGEN, GERMANY
关键词
DICTYOSTELIUM-DISCOIDEUM; TRANSFER RNA GENES; REPETITIVE ELEMENTS; DRE; TDD-3;
D O I
10.1016/0022-2836(91)90495-R
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
A total of 68 different tRNA genes from the cellular slime mold Dictyostelium discoideum have been isolated and characterized. Although these tRNA genes show features common to typical nuclear tRNA genes from other organisms, several unique characteristics are apparent: (1) the 5′-proximal flanking region is very similar for most of the tRNA genes; (2) more than 80% of the tRNA genes contain an "ex-B motif" within their 3′-flanking region, which strongly resembles characteristics of the consensus sequence of a T-stem/T-loop region (B-box) of a tRNA gene; (3) probably more than 50% of the tRNA genes in certain D. discoideum strains are associated with a retrotransposon, termed DRE (Dictyostelium repetitive element), or with a transposon, termed Tdd-3 (Transposon Dictyostelium discoideum). DRE always occurs 50(±3) nucleotides upstream and Tdd-3 always occurs 100(± 20) nucleotides downstream from the tRNA gene. D. discoideum tRNA genes are organized in multicopy gene families consisting of 5 to 20 individual genes. Members of a particular gene family are identical within the mature tRNA coding region while flanking sequences are idiosyncratic. © 1991.
引用
收藏
页码:537 / 552
页数:16
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  • [1] TRANSFER-RNA GENES FROM DICTYOSTELIUM-DISCOIDEUM ARE FREQUENTLY ASSOCIATED WITH REPETITIVE ELEMENTS AND CONTAIN CONSENSUS BOXES IN THEIR 5'-FLANKING AND 3'-FLANKING REGIONS
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    SCHUMANN, G
    GOSSERINGER, R
    BACH, M
    BERTLING, W
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    DINGERMANN, T
    BIOLOGICAL CHEMISTRY HOPPE-SEYLER, 1991, 372 (09): : 679 - 680
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    HOFMANN, J
    SCHUMANN, G
    DINGERMANN, T
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  • [4] STRUCTURE OF 2 TRANSFER-RNA GENES FROM DICTYOSTELIUM-DISCOIDEUM
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    PEFFLEY, DM
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  • [5] CHROMOSOMAL MAPPING OF TRANSFER-RNA GENES FROM DICTYOSTELIUM-DISCOIDEUM
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    NUCLEIC ACIDS RESEARCH, 1986, 14 (22) : 8703 - 8722
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  • [10] INVIVO TRANSCRIPTION OF TRANSFER-RNA GENES FROM DICTYOSTELIUM-DISCOIDEUM IN HOMOLOGOUS AND HETEROLOGOUS SYSTEMS
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