Hello, CIn general, coordinate data for telomere and centromere regions are estimates only for eukaryotic genomic reference sequences. The highly repetitive nature of these regions make them difficult if not impossible to sequence and assemble given current technology. The locations can vary by species depending on the native chromosome structure, but are always represented by strings of capitol N's in consistent block lengths in the UCSC browser and have coordinates in the track "Gap" (see the track description page http://genome.ucsc.edu -> Genome Browser -> select clade,genome,assembly and submit -> Mapping and Sequencing Tracks -> Gap -> click on track short label).
Jennifer ------------------------------------------------ Jennifer Jackson UCSC Genome Bioinformatics Group ----- "侯磊" <[email protected]> wrote: > From: "侯磊" <[email protected]> > To: "genome" <[email protected]> > Sent: Tuesday, January 5, 2010 1:22:08 AM GMT -08:00 US/Canada Pacific > Subject: [Genome] how can I download telomere and centromere sequences of > specific organism? > > Dear collegue, > > I can't find sequence data or coordinate data for telomere and > centromere regions > from UCSC GENOME BROWSER. Would you please help me with it? > > Thanks a lot. > Lei Hou > PH.D student, Jing-Dong Jackie Han's Lab > Institute of Genetics and Developmental Biology > Chinese Academy of Sciences > Datun Road, Beijing 100101 > P.R. China > TEL: +86-(0)10-6484 5797 > _______________________________________________ > Genome maillist - [email protected] > https://lists.soe.ucsc.edu/mailman/listinfo/genome _______________________________________________ Genome maillist - [email protected] https://lists.soe.ucsc.edu/mailman/listinfo/genome
