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StatusReference proteome
Proteome IDiUP000008549
Taxonomy6238 - Caenorhabditis briggsae
Last modifiedJanuary 22, 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.


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Component nameGenome Accession(s)
Chromosome I3073
Chromosome II3325
Chromosome III2887
Chromosome IV3265
Chromosome V4771
Chromosome X3750
Unassembled WGS sequence1251