Project description:Herein, we provide the first whole-genome sequence of the purple butter clam (Saxidomus purpuratus), an economically important bivalve shellfish. Specifically, we sequenced and de novo assembled the genome of Sa. purpuratus based on PromethION long reads and Hi-C data. The 978-Mb genome of Sa. purpuratus comprises 19 chromosomes with 36,591 predicted protein-coding genes. The N50 length of Sa. purpuratus genome is 52 Mb, showing the highest continuous assembly among bivalve genomes. The Benchmarking by Universal Single-Copy Orthologs assessment indicated that 95.07% of complete metazoan universal single-copy orthologs (n = 954) were present in the assembly. Approximately 51% of Sa. purpuratus genome comprises repetitive sequences. Based on the high-quality Sa. purpuratus genome, we resolved half of the immune-associated genes, namely, scavenger receptor (SR) proteins, which are collinear to those in the closely related Cyclina sinensis genome. This finding suggested a high degree of conservation among immune-associated genes. Twenty-two (19%) SR proteins are tandemly duplicated in Sa. purpuratus genome, suggesting putative convergence evolution. Overall, Sa. purpuratus genome provides a new resource for the discovery of economically important traits and immune-response genes.

| S-EPMC9337622 | biostudies-literature

Argopecten irradians irradians x Argopecten purpuratus

Project description:Argopecten irradians irradians x Argopecten purpuratus overview

| PRJNA558123 | ENA

single nucleus RNA-seq of early development in P. miniata

Project description:To explore the evolution of different cell types across species, we compared transcriptomes between different cell types between two echinoderm species, P. miniata and S. purpuratus. snRNA-seq was used to analyze to characterize diffente cell states. For each species, the time points were integrated into a common atlas and annotated. The fully processed and annotated P. miniata and S. purpuratus atlases are available as supplementary files.

2023-08-07 | GSE240143 | GEO

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