The smallest known eukaryotic genomes encode a protein gene: towards an understanding of nucleomorph functions
- PMID: 8208251
- DOI: 10.1007/BF00284209
The smallest known eukaryotic genomes encode a protein gene: towards an understanding of nucleomorph functions
Abstract
Cryptomonads are unicellular algae with plastids surrounded by four membranes. Between the two pairs of membranes lies a periplastidal compartment that harbours a DNA-containing organelle, termed the nucleomorph. The nucleomorph is the vestigial nucleus of a phototrophic, eukaryotic endosymbiont. Subcloning of parts of one nucleomorph chromosome revealed a gene coding for an Hsp70 protein. We demonstrate the expression of this nucleomorph protein-coding gene and present a model for protein transport from the host to the endosymbiont compartment.
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