A fragmented metazoan organellar genome: the two mitochondrial chromosomes of Hydra magnipapillata.

ABSTRACT:

Background

Animal mitochondrial (mt) genomes are characteristically circular molecules of approximately 16-20 kb. Medusozoa (Cnidaria excluding Anthozoa) are exceptional in that their mt genomes are linear and sometimes subdivided into two to presumably four different molecules. In the genus Hydra, the mt genome comprises one or two mt chromosomes. Here, we present the whole mt genome sequence from the hydrozoan Hydra magnipapillata, comprising the first sequence of a fragmented metazoan mt genome encoded on two linear mt chromosomes (mt1 and mt2).

Results

The H. magnipapillata mt chromosomes contain the typical metazoan set of 13 genes for respiratory proteins, the two rRNA genes and two tRNA genes. All genes are unidirectionally oriented on mt1 and mt2, and several genes o

SUBMITTER: Voigt O 

PROVIDER: S-EPMC2518934 | biostudies-literature | 2008 Jul

REPOSITORIES: biostudies-literature