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StatusReference proteome
Gene counti - Download one protein sequence per gene (FASTA)
Proteome IDiUP000008549
Taxonomy6238 - Caenorhabditis briggsae
Last modifiedFebruary 27, 2018
Genome assembly and annotationi GCA_000004555.3 from ENA/EMBL

Caenorhabditis briggsae is a nematode roundworm that is almost indistinguishable from the model-organism nematode Caenorhabditis elegans. It also shares many other features such as chromosome number, habitat and behavior which make it an ideal candidate for comparative genomics studies, especially as 93% of the predicted protein-coding genes have clear C. elegans orthologs.

Like C. elegans the C. briggsae embryo goes through four larval stages before becoming a mature adult. In response to over-crowding or an inadequate food supply the worm can adopt a dauer larval stage. In this stage the worm can survive for up to three months. Most worms are found in this stage. Sexual reproduction occurs by an adult hermaphrodite self-fertilizing.

The reference proteome for C. briggsae (strain AF16) is derived from a hybrid sequencing approach combining whole-genome assembly with whole-genome shotgun sequencing (WGS). The C. briggsae genome size is approximately 104 Mb, slightly larger than that of the C. elegans. The difference is mainly due to the larger non-genic repetitive DNA content in C. briggsae's genome. The number of protein-coding genes is estimated to be 19,507.


Component nameGenome Accession(s)
Chromosome I3071
Chromosome II3320
Chromosome III2886
Chromosome IV3260
Chromosome V4765
Chromosome X3748
Unassembled WGS sequence1261
UniProt is an ELIXIR core data resource
Main funding by: National Institutes of Health

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