# The chromosomal genome sequence of the sponge Crambe crambe (Schmidt, 1862) and its associated microbial metagenome sequences

## TL;DR

This paper presents the genome of the sponge Crambe crambe and the genomes of its associated microbes, providing insights into sponge biology and symbiosis.

## Contribution

The study provides a high-quality chromosomal genome assembly of Crambe crambe and associated microbial metagenomes.

## Key findings

- The host genome is 143.20 megabases long and scaffolded into 18 chromosomal pseudomolecules.
- The mitochondrial genome is 19.53 kilobases in length.
- Microbial genomes of symbiotic prokaryotes, including Beroebacter and Nitrosopumilus, were assembled.

## Abstract

We present a genome assembly from an individual
Crambe crambe (Porifera; Demospongiae; Poecilosclerida; Crambeidae). The host genome sequence is 143.20 megabases in span. Most of the assembly is scaffolded into 18 chromosomal pseudomolecules. The mitochondrial genome has also been assembled and is 19.53 kilobases in length. Several symbiotic prokaryotic genomes were assembled as MAGs, including two relevant sponge symbionts, the
Candidatus Beroebacter blanensis/
AqS2 clade (Tethybacterales, Gammaproteobacteria) of LMA sponges, and the widely distributed archaeal
Nitrosopumilus sp. clade.