Category: Dinoflagellate genomics

Dec 10

Diversity and Divergence of Dinofagellate Histone Proteins.

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Diversity and Divergence of Dinofagellate Histone Proteins.

G3 (Bethesda). 2015 Dec 8;

Authors: Marinov GK, Lynch M

Abstract
Histone proteins and the nucleosomal organization of chromatin are near-universal eukaroytic features, with the exception of dinoflagellates. Previous studies have suggested that histones do not play a major role in the packaging of dinoflagellate genomes, although several genomic and transcriptomic surveys have detected a full set of core histone genes. Here, transcriptomic and genomic sequence data from multiple dinoflagellate lineages are analyzed, and the diversity of histone proteins and their variants characterized, with particular focus on their potential posttranslational modifications and the conservation of the histone code. In addition, the set of putative epigenetic mark readers and writers, chromatin remodelers and histone chaperones are examined. Dinoflagellates clearly express the most derived set of histones among all autonomous eukaryote nuclei, consistent with a combination of relaxation of sequence con-straints imposed by the histone code and the presence of numerous specialized histone variants. The histone code itself appears to have diverged significantly in some of its compo-nents, yet others are conserved, implying conservation of the associated biochemical processes. Specifically, and with major implications for the function of histones in dinoflagellates, the results presented here strongly suggest that transcription through nucleosomal arrays happens in dinoflagellates. Finally, the plausible roles of histones in dinoflagellate nuclei are discussed.

PMID: 26646152 [PubMed – as supplied by publisher]

Dec 09

Biosynthetic Studies of 13-Desmethylspirolide C Produced by Alexandrium ostenfeldii (= A. peruvianum): Rationalization of the Biosynthetic Pathway Following Incorporation of (13)C-Labeled Methionine and Application of the Odd-Even Rule of Methylation.

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Biosynthetic Studies of 13-Desmethylspirolide C Produced by Alexandrium ostenfeldii (= A. peruvianum): Rationalization of the Biosynthetic Pathway Following Incorporation of (13)C-Labeled Methionine and Application of the Odd…

Nov 25

The Hidden Sexuality of Alexandrium Minutum: An Example of Overlooked Sex in Dinoflagellates.

The Hidden Sexuality of Alexandrium Minutum: An Example of Overlooked Sex in Dinoflagellates.
PLoS One. 2015;10(11):e0142667
Authors: Figueroa RI, Dapena C, Bravo I, Cuadrado A
Abstract
Dinoflagella…

Nov 18

Multifunctional polyketide synthase genes identified by genomic survey of the symbiotic dinoflagellate, Symbiodinium minutum.

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Multifunctional polyketide synthase genes identified by genomic survey of the symbiotic dinoflagellate, Symbiodinium minutum.
BMC Genomics. 2015;16(1):941
Authors: Beedessee G, Hisata K, Roy MC, Sat…

Nov 13

RNA Sequencing Revealed Numerous Polyketide Synthase Genes in the Harmful Dinoflagellate Karenia mikimotoi.

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RNA Sequencing Revealed Numerous Polyketide Synthase Genes in the Harmful Dinoflagellate Karenia mikimotoi.
PLoS One. 2015;10(11):e0142731
Authors: Kimura K, Okuda S, Nakayama K, Shikata T, Takahash…

Nov 07

The Symbiodinium kawagutii genome illuminates dinoflagellate gene expression and coral symbiosis.

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The Symbiodinium kawagutii genome illuminates dinoflagellate gene expression and coral symbiosis.
Science. 2015 Nov 6;350(6261):691-4
Authors: Lin S, Cheng S, Song B, Zhong X, Lin X, Li W, Li L, Zha…

Oct 22

Corrigendum to "Heat Shock Protein 70 and 90 Genes in the Harmful Dinoflagellate Cochlodinium polykrikoides: Genomic Structures and Transcriptional Responses to Environmental Stresses".

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Corrigendum to “Heat Shock Protein 70 and 90 Genes in the Harmful Dinoflagellate Cochlodinium polykrikoides: Genomic Structures and Transcriptional Responses to Environmental Stresses”.
Int J Genomics. 2015…

Oct 01

Seasonal Preservation Success of the Marine Dinoflagellate Coral Symbiont, Symbiodinium sp.

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Seasonal Preservation Success of the Marine Dinoflagellate Coral Symbiont, Symbiodinium sp.
PLoS One. 2015;10(9):e0136358
Authors: Hagedorn M, Carter VL
Abstract
Coral reefs are som…

Sep 25

Identification of microRNAs in the Toxigenic Dinoflagellate Alexandrium catenella by High-Throughput Illumina Sequencing and Bioinformatic Analysis.

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Identification of microRNAs in the Toxigenic Dinoflagellate Alexandrium catenella by High-Throughput Illumina Sequencing and Bioinformatic Analysis.
PLoS One. 2015;10(9):e0138709
Authors: Geng H, S…

Sep 02

The genome of Aiptasia, a sea anemone model for coral symbiosis.

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The genome of Aiptasia, a sea anemone model for coral symbiosis.
Proc Natl Acad Sci U S A. 2015 Aug 31;
Authors: Baumgarten S, Simakov O, Esherick LY, Liew YJ, Lehnert EM, Michell CT, Li Y, Hambleto…