CHARACTERIZATION OF A NOVEL PLASMID-LIKE ELEMENT IN NEUROSPORA-CRASSA DERIVED MOSTLY FROM THE MITOCHONDRIAL-DNA

被引：14

作者：

ALMASAN, A ^{[1
]}

MISHRA, NC ^{[1
]}

机构：

[1] UNIV S CAROLINA,DEPT BIOL SCI,COLUMBIA,SC 29208

来源：

NUCLEIC ACIDS RESEARCH | 1990年 / 18卷 / 19期

关键词：

D O I：

10.1093/nar/18.19.5871

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：

We have identified a plasmld-like element within mitochondria ofNeurospora crassa strain stp-B1. R is derived from the EcoRI-4 and EcoRI-6 regions of the mitochondrlai DNA, and an additional 124 bp DNA segment of unknown origin. The plasmid DNA consists of an oligomeric series of circular molecules of monomer length 2.2 kbp. The abundance of the plasmid suggests its autonomous replication and the presence of an efficient origin of replication. An unusually large number of palindromes capable of forming secondary structures are present in the plasmid. Such a pallndrome, located near sequences reminiscent of mammalian and fungal mtDNA origins of replication, may define the replication origin of the plasmid. This putative origin might also represent the replication origin of the wild-type mtDNA. © 1990 Oxford University Press.

引用

页码：5871 / 5877

页数：7

共 42 条

[1] DUPLICATION OF THE TRANSFER RNAMMET AND TRANSFER RNACYS GENES AND OF FRAGMENTS OF A GENE ENCODING A SUBUNIT OF THE NADH DEHYDROGENASE COMPLEX IN NEUROSPORA-GRASSA MITOCHONDRIAL-DNA [J].