ISOLATION OF EUGLENA-GRACILIS CHLOROPLAST 5S RIBOSOMAL-RNA AND MAPPING THE 5S RIBOSOMAL-RNA GENE ON CHLOROPLAST DNA

被引：31
作者：
GRAY, PW [1 ]
HALLICK, RB [1 ]
机构：
[1] UNIV COLORADO, DEPT CHEM, BOULDER, CO 80309 USA
来源：
BIOCHEMISTRY | 1979年 / 18卷 / 09期
关键词：
D O I：
10.1021/bi00576a029
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：
Ribosomal RNA (5S) from E. gracilis chloroplasts was isolated by preparative electrophoresis, labeled in vitro with 125I and hybridized to restriction nuclease fragments from chloroplast DNA or cloned chloroplast DNA segments. Euglena chloroplast 5S rRNA is encoded in the chloroplast genome. The coding region of 5S rRNA was positioned within the 5.6 kilobase pair (kbp) repeat which also codes for 16S and 23S rRNA. There are three 5S rRNA genes on the 130 kbp genome. The order of RNAs within a single repeat is 16S-23S-5S. The organization and size of the Euglena chloroplast ribosomal repeat is very similar to the ribosomal RNA operons of Escherichia coli.
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页码：1820 / 1825
页数：6
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