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Literature DB >> 8208251

The smallest known eukaryotic genomes encode a protein gene: towards an understanding of nucleomorph functions.

C J Hofmann¹, S A Rensing, M M Häuber, W F Martin, S B Müller, J Couch, G I McFadden, G L Igloi, U G Maier.

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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Year: 1994 PMID： 8208251 DOI： 10.1007/bf00284209

Source DB: PubMed Journal: Mol Gen Genet ISSN： 0026-8925

22 in total

Review 1. The emergence of the chaperone machines.

Authors: C Georgopoulos
Journal: Trends Biochem Sci Date: 1992-08 Impact factor: 13.807

2. Protein translocation: through the mitochondrial inner membrane.

Authors: M Horst; N G Kronidou; G Schatz
Journal: Curr Biol Date: 1993-03 Impact factor: 10.834

3. Hypothesis for the evolutionary origin of the chloroplast ribosomal protein L21 of spinach.

Authors: W Martin; T Lagrange; Y F Li; C Bisanz-Seyer; R Mache
Journal: Curr Genet Date: 1990-12 Impact factor: 3.886

4. Cryptomonad algae are evolutionary chimaeras of two phylogenetically distinct unicellular eukaryotes.

Authors: S E Douglas; C A Murphy; D F Spencer; M W Gray
Journal: Nature Date: 1991-03-14 Impact factor: 49.962

5. A eukaryotic genome of 660 kb: electrophoretic karyotype of nucleomorph and cell nucleus of the cryptomonad alga, Pyrenomonas salina.

Authors: S Eschbach; C J Hofmann; U G Maier; P Sitte; P Hansmann
Journal: Nucleic Acids Res Date: 1991-04-25 Impact factor: 16.971

6. The four genomes of the alga Pyrenomonas salina (Cryptophyta).

Authors: U G Maier
Journal: Biosystems Date: 1992 Impact factor: 1.973

7. The plastid genome of Cryptomonas phi encodes an hsp70-like protein, a histone-like protein, and an acyl carrier protein.

Authors: S L Wang; X Q Liu
Journal: Proc Natl Acad Sci U S A Date: 1991-12-01 Impact factor: 11.205

8. SecA is plastid-encoded in a red alga: implications for the evolution of plastid genomes and the thylakoid protein import apparatus.

Authors: K Valentin
Journal: Mol Gen Genet Date: 1993-01

9. Structure of a gene encoding heat-shock protein HSP70 from the unicellular alga Chlamydomonas reinhardtii.

Authors: F W Müller; G L Igloi; C F Beck
Journal: Gene Date: 1992-02-15 Impact factor: 3.688

10. The route of entry of cytoplasmically synthesized proteins into chloroplasts of algae possessing chloroplast ER.

Authors: S P Gibbs
Journal: J Cell Sci Date: 1979-02 Impact factor: 5.285

4 in total

1. Chloroplast protein and centrosomal genes, a tRNA intron, and odd telomeres in an unusually compact eukaryotic genome, the cryptomonad nucleomorph.

Authors: S Zauner; M Fraunholz; J Wastl; S Penny; M Beaton; T Cavalier-Smith; U G Maier; S Douglas
Journal: Proc Natl Acad Sci U S A Date: 2000-01-04 Impact factor: 11.205