Updated CH assembly and CH/CHO-K1 annotations

May 1, 2019

We are excited to announce that the significantly improved Chinese hamster genome, CH PICR (GCF_00366804.1), along with its 2018 RefSeq annotation is now online. In addition, an updated RefSeq annotation for the CHO-K1 cell line is now available. Both can be searched (gene search and BLAST) and viewed on JBrowse. More information on the updated Chinese hamster genome can be found here.

New mRNA Expression Browser (Beta)

June 7, 2017

The browser (beta version) for the visualization of mRNA expression from CHO-K1 cells is now online. The data is from several published DNA-microarray or RNA-Seq experiments. The tutorial on how to use this browser can be found here.

Coming Soon!

March 10, 2017

Users will be able to visualize CHO cell mRNA expression data either from published DNA-microarray or RNA-Seq experiments via JBrowse. The visualized data will enable users to easily obtain gene expression levels and compare gene expression levels among different conditions.

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Search RefSeq

Search the RefSeq CHO-K1 and Chinese hamster assemblies by gene name, symbol, or gene ID:

For detailed searches use Advanced Search

Welcome to the CHO Genome website! Tutorials for how to use this website can be viewed here and we welcome any questions or suggestions you may have.

Updates and details regarding the CHOStart project can be found here:


Access CHOmine, the CHO and Chinese hamster InterMine site:



Genes Blast Genome Viewer

Gene Search
Search the RefSeq Chinese Hamster and CHO-K1 assemblies

BLAST sequences against Chinese Hamster or CHO-K1 genomes

Genome Viewer
View the annotated RefSeq Chinese Hamster or CHO-K1 genomes

Proteome Downloads Genome Viewer

Proteome Browser
Search the 2-D gel and shotgun datasets

Useful Chinese Hamster publications and files

CH Genome Viewer
View the chromosome-sorted Chinese Hamster genome


Previous Events

Mammalian Systems Biotechnology Workshop


August 11 - August 12, 2016

This workshop will bring together globally eminent experts actively working in the Mammalian Systems Biotechnology field, in order to share and discuss state-of-the-art developments and their industrial applications.

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Cell Culture Engineering XV

La Quinta, California, USA

May 8 - May 13, 2016

The Cell Culture Engineering XV conference will bring together about 350 selected participants from top academic, industrial and governmental groups from all over the world.

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251st ACS National Meeting & Exposition

San Diego, CA, USA

March 13 - March 17, 2016

The 251st ACS National Meeting & Exposition in San Diego, CA will convene from March 13 - 17, 2016 and the BIOT division will focus on the exchange of information among academic and industrial researchers regarding technology utilizing life-based systems to produce useful products and services.

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