Tackling a Hairy Beast II

For all out there who love ciliates and their relatives, you might want to check out the second paper to come out of my Tetrahymena thermophila Genome Sequencing Project for which the preprint is available in BMC Genomics.

In this project we have been sequencing, annotating and finishing the macronuclear genome of this lovely organism. Like other ciliates Tetrahymena has two nuclei and two nuclear genomes – the macronucleus (MAC) and the micronucleus (MIC). The MIC is analogous to germ cells in animals — it is sort of a genomic repository for sexual reproduction. After sexual reproduction, the MIC genome is processed to generate the MAC genome which is then used in an analogous way to soma cells in animals (the MAC is the site for most/all gene expression in Tetrahymena). I have been the PI on this project which was supported by grants from NSF and NIH and was a collaboration involving TIGR (where I used to work), Stanford, UCSB, JCVI (which subsumed TIGR a few years ago) and the Tetrahymena research community.

Our first paper on this project was published in PLoS Biology two years ago. I have written about it previously here.

The new paper describes further work on the MAC genome including finishing many of the chromosomes (which was done spectacularly by Luke Tallon and Kristie Jones), sequencing and analyzing a larger number of ESTs, refining the annotation (coordinated by Mathangi Thiagarajan), and some other analyses. The new paper was led by Bob Coyne, who, with Barb Methé took over coordinating the work at TIGR/JCVI after I moved to UC Davis a few years back. I think they did a stellar job (ni biases here).

Note – I took the title of the posting ‘Tackling a Hairy Best” from an NIH press release that was put out when we got the grants for this project.