Adkins P et al. (2024), The genome sequence of the sand star, Astropect...

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Wellcome Open Res 2024 Aug 07;9:431. doi: 10.12688/wellcomeopenres.22821.1.

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The genome sequence of the sand star, Astropecten irregularis (Pennant, 1777).

Adkins P , Harley J , Bishop J , Marine Biological Association Genome Acquisition Lab , Darwin Tree of Life Barcoding collective , Wellcome Sanger Institute Tree of Life Management, Samples and Laboratory team , Wellcome Sanger Institute Scientific Operations: Sequencing Operations , Wellcome Sanger Institute Tree of Life Core Informatics team , Tree of Life Core Informatics collective , Darwin Tree of Life Consortium .

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We present a genome assembly from an individual Astropecten irregularis (the sand star; Echinodermata; Asteroidea; Paxillosida; Astropectinidae). The genome sequence spans 475.80 megabases. Most of the assembly is scaffolded into 22 chromosomal pseudomolecules. The mitochondrial genome has also been assembled and is 16.34 kilobases in length.

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	Figure 1. . Photograph of the Astropecten irregularis (eaAstIrre1) specimen used for genome sequencing.
	Figure 2. . Genome assembly of Astropecten irregularis, eaAstIrre1.1: metrics.The BlobToolKit snail plot shows N50 metrics and BUSCO gene completeness. The main plot is divided into 1,000 size-ordered bins around the circumference with each bin representing 0.1% of the 475,837,774 bp assembly. The distribution of scaffold lengths is shown in dark grey with the plot radius scaled to the longest scaffold present in the assembly (39,043,871 bp, shown in red). Orange and pale-orange arcs show the N50 and N90 scaffold lengths (21,462,565 and 14,331,079 bp), respectively. The pale grey spiral shows the cumulative scaffold count on a log scale with white scale lines showing successive orders of magnitude. The blue and pale-blue area around the outside of the plot shows the distribution of GC, AT and N percentages in the same bins as the inner plot. A summary of complete, fragmented, duplicated and missing BUSCO genes in the metazoa_odb10 set is shown in the top right. An interactive version of this figure is available at https://blobtoolkit.genomehubs.org/view/Astropecten_irregularis/dataset/GCA_963971285.1/snail.
	Figure 3. . Genome assembly of Astropecten irregularis, eaAstIrre1.1.Blob plot of base coverage in ERR11809141 against GC proportion for sequences in assembly GCA_963971285.1. Sequences are coloured by phylum. Circles are sized in proportion to sequence length. Histograms show the distribution of sequence length sum along each axis. An interactive version of this figure is available at https://blobtoolkit.genomehubs.org/view/Astropecten_irregularis/dataset/GCA_963971285.1/blob.
	Figure 4. . Genome assembly of Astropecten irregularis eaAstIrre1.1: BlobToolKit cumulative sequence plot.The grey line shows cumulative length for all sequences. Coloured lines show cumulative lengths of sequences assigned to each phylum using the buscogenes taxrule. An interactive version of this figure is available at https://blobtoolkit.genomehubs.org/view/Astropecten_irregularis/dataset/GCA_963971285.1/cumulative.
	Figure 5. . Genome assembly of Astropecten irregularis eaAstIrre1.1: Hi-C contact map of the eaAstIrre1.1 assembly, visualised using HiGlass.Chromosomes are shown in order of size from left to right and top to bottom. An interactive version of this figure may be viewed at https://genome-note-higlass.tol.sanger.ac.uk/l/?d=TvB534skT0qAf4Af_6H0qg.