TEL05R-YP Summary Help

Systematic Name TEL05R-YP
Feature Type Y'_element
Description Telomeric long Y' element on the right arm of Chromosome V; contains an ARS consensus sequence, a region of 36-bp repeats, and four ORFs (YRF1-2/YER190W, YER189W, YER190C-A, YER190C-B) (1, 2 and see Summary Paragraph)
Chromosomal Location
ChrV:570330 to 576874 | ORF Map | GBrowse
sequence information
ChrV:570330 to 576874 | ORF Map | GBrowse
This feature contains embedded feature(s): YER189W | YRF1-2 | YER190C-A | YER190C-B
This feature is contained within: TEL05R
Last Update Coordinates: 2011-02-03 | Sequence: 2003-09-09
Subfeature details
Most Recent Updates
Coordinates Sequence
Repeat region 4569..4995 574898..575324 2011-02-03 2003-09-09
ACS 6385..6395 576714..576724 2011-02-03 2003-09-09
Retrieve sequences
Analyze Sequence
S288C only
S288C vs. other species
External Links All Associated Seq | Search all NCBI (Entrez)
Primary SGDIDS000028956

TEL05R-Yp, the long Y' (Y'-L) element on the right arm of chromosome V, contains an ARS consensus sequence, a region of 36-bp repeats, one verified ORF YRF1-2/YER190W, one uncharacterized ORF YER189W, and two dubious ORFs (YER190C-A, YER190C-B).

The Y' element is a repetitive sequence found in many but not all subtelomeric regions next to the telomeric repeats, or adjacent X element combinatorial repeats, either as a single copy or tandem repeat of two to four copies(3, 4). Two main types of Y' elements are known, Y'-L and Y'-S, and any particular array will consist of only one type, not a combination of both (5). Y' elements contain helicase-encoding ORFs which are expressed only during meiosis and in telomerase-deficient cells (5). Possible functions include rescue of telomeres when the telomeric repeats are no longer present and a role in telomere maintenance during meiosis (5).

Other features of TEL05R, the right telomeric region of chromosome V, include an X element core sequence TEL05R-XC, and a region of X element combinatorial repeats TEL05R-XR.

Click on the following figure for more details:

telomere map

Further information can be found at the website of Dr. Ed Louis, Institute of Genetics, The University of Nottingham.

Last updated: 2003-11-18 Contact SGD

References cited on this page View Complete Literature Guide for TEL05R-YP
1) Louis EJ  (1995) The chromosome ends of Saccharomyces cerevisiae. Yeast 11(16):1553-73
2) Louis EJ, et al.  (1994) The chromosome end in yeast: its mosaic nature and influence on recombinational dynamics. Genetics 136(3):789-802
3) Louis EJ and Haber JE  (1992) The structure and evolution of subtelomeric Y' repeats in Saccharomyces cerevisiae. Genetics 131(3):559-74
4) Pryde FE, et al.  (1997) Chromosome ends: all the same under their caps. Curr Opin Genet Dev 7(6):822-8
5) Yamada M, et al.  (1998) Y'-Help1, a DNA helicase encoded by the yeast subtelomeric Y' element, is induced in survivors defective for telomerase. J Biol Chem 273(50):33360-6