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  • Xenbase Release 3.11.0

    • Transgene links added to gene pages
    • RRID field added for antibodies
    • Proper name display for lines, transgenes, and strains
    • Reformatted the "Cite Xenbase" page; added Xenbase publications
  • Perceived bias in NIH grant reviews

    This is a follow-up to the endorsement of the Model Organism Database support letter.

    NIH Director Dr. Francis Collins invites researchers to present examples of potential bias in grant reviews against basic research or model organism research.

    Please move quickly on this. The deadline is July 29, 2016.

  • Gene Regulatory Networks for Development Course at MBL

    Special Topics Course: Gene Regulatory Networks for Development

    October, 9-22, 2016

    Marine Biological Laboratory, Woods Hole, MA

    Deadline to apply: July 29, 2016

  • Single-cell mass spectrometry comparing metabolites in left and right cells in the 8-cell Xenopus laevis embryo

    Onjiko et al. used single-cell mass spectrometry to compare left and right cells in the 8-cell Xenopus laevis embryo.

    Of hundreds of different metabolites detected, 10 were found to be asymmetrically accumulated between the left and right cells.

    Featured article in the journal, Analyst.

  • GSA Seeks Support Regarding MOD Funding

    The Genetics Society of America (GSA) is seeking support for revision of plans to consolidate and reduce the funding of MODs funded by the National Human Genome Research Institute (NHGRI/NIH).

  • Updated Xenopus laevis genome annotation

    Gene Model Annotation 1.8.3 of the X. laevis 9.1 Genome Build

    The latest annotation of the X. laevis 9.1 genome is ready!  

    This release only includes updating the gene symbol of existing gene models.  

    The files for this annotation release, GFFs and FASTA, can be downloaded from the Xenbase FTP page, under the X. laevis genome assemblies and gene models category.

  • 2016 Xenopus White Paper

    Representatives of the research community have released the 2016 Xenopus White Paper summarizing strategic resource development.

    Download: Word Doc, PDF

    PIs: Please reference the White Paper in your NIH grant proposals and contact your program officers.

  • Developmental Biology: Special Issue

    Volume 408, Issue 2, Pages 179-358
    Modeling Human Development and Disease in Xenopus
    Edited by Carole LaBonne and Aaron Zorn

  • 2016 National Academy of Sciences

    Xenbase, and on behalf of the world wide Xenopus research community, congratulates the newly appointed members to the National Academy of Sciences who both currently and in earlier times in their careers, use Xenopus in their research.

  • American Academy of Arts and Sciences 2016 Newly Elected Members

    Congratulations to Christof Niehrs and Nancy Ip for being elected to the American Academy of Arts and Sciences.

  • Searchable Databases of Xenopus RNA-Seq Expression Profiles

    Update: Owens et al. published in Cell Reports high-resolution, absolute number mRNA transcript data during X. tropicalis development from fertilization to tadpole stages, a developmental period approximating the first 8 weeks of human gestation.

  • Xenopus laevis genome v9.1 released

    The Xenopus laevis genome v9.1 is available at chromosome scale.

    It can be accessed via BLAST or by selecting the 9.1 version within GBrowse.

    ...or click here to go directly.

    X. laevis genome v8.0 is now retired due to missing regions.

  • 16th International Xenopus Conference

    Registration now open.

    The biennial gathering of Xenopus biomedical researchers:

    Aug. 28th - Sept. 1st, 2016

    Orthodox Academy of Crete, Chania

    Click here to go to the meeting website.

  • Xenbase Release 3.11.0

    • Transgene links added to gene pages
    • RRID field added for antibodies
    • Proper name display for lines, transgenes, and strains
    • Reformatted the "Cite Xenbase" page; added Xenbase publications

BLAST X. tropicalis and X. laevis nucleotide and protein sequences, ESTs clusters, and genomes.

X. laevis genomes
X. tropicalis genomes

genome_browserGenome Browsers

Browse the genome using the Xenbase genome browsers.

X. laevis genomes X. tropicalis genomes
UCSC Track Hubs
Other Genome Browsers
gene_expressionGene Expression

Search gene expression patterns by anatomy and developmental stage.


Search our gene catalog and gene expression images.

View Nomenclature Guidelines.

Perform data mining with InterMine for Xenopus.

anatomy_and_developmentAnatomy & Development

View anatomy and developmental stage information and resources.

reagents_and_protocolsReagents & Protocols

Browse Xenopus reagents, ABs, MOs, protocols, and suppliers.


Search for research papers and books about Xenopus.

Run advanced queries on Xenopus papers with Textpresso.

Papers on Xenbase.

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version: [3.11.2]

Please consider citing us in your papers if Xenbase contributes to your research

Major funding for Xenbase is provided by the National Institute of Child Health and Human Development, grant P41 HD064556