Galdieria sulphuraria (ASM34128v1)

Galdieria sulphuraria Assembly and Gene Annotation

About Galdieria sulphuraria

Galdieria sulphuraria is an extremophilic unicellular species of red algae. It is the type species of the genus Galdieria. It is known for its broad metabolic capacities, including photosynthesis and heterotrophic growth on over 50 different extracellular carbon sources. The members of the Cyanidiophyceae family are among the most acidophilic known photosynthetic organisms, and the growth conditions of G. sulphuraria, pH between 0 and 4, and temperatures up to 56°C, are among the most extreme known for eukaryotes. Analysis of its genome suggests that its thermoacidophilic adaptations derive from horizontal gene transfer from archaea and bacteria, another rarity among eukaryotes.


The assembly presented is the ASM34128v1 assembly submitted to INSDC with the assembly accession GCA_000341285.1 by the Galdieria sulphuraria Genome Project.


The annotation presented is derived from annotation submitted to INSDC with the assembly accession GCA_000341285.1, with additional non-coding genes derived from Rfam.

Repeats were annotated in-house with the Ensembl Genomes repeat feature pipeline. There are: 9,272 Low complexity (Dust) features, covering 0 Mb (3.6% of the genome); 251 RepeatMasker features (annotated with the RepBase library), covering 0 Mb (0.3% of the genome); 1,654 RepeatMasker features (annotated with the PGSB-REdat library), covering 0 Mb (1.5% of the genome); 1,406 Tandem repeats (TRF) features, covering 0 Mb (1.0% of the genome); Repeat Detector repeats length 2.3Mb (17.1% of the genome).


  1. Gene transfer from bacteria and archaea facilitated evolution of an extremophilic eukaryote.
    Schnknecht G, Chen WH, Ternes CM, Barbier GG, Shrestha RP, Stanke M, Brutigam A, Baker BJ, Banfield JF, Garavito RM et al. 2013. Science. 339:1207-1210.

More information

General information about this species can be found in Wikipedia.



AssemblyASM34128v1, INSDC Assembly GCA_000341285.1, Feb 2013
Database version109.1
Golden Path Length13,712,004
Genebuild byGsGP
Genebuild methodImport
Data sourceGaldieria sulphuraria Genome Project

Gene counts

Coding genes6,622
Non coding genes101
Small non coding genes101
Gene transcripts7,275