bal31 nuclease
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1990 ◽  
Vol 10 (8) ◽  
pp. 4415-4419 ◽  
Author(s):  
S S Wang ◽  
V A Zakian

By using T4 DNA polymerase rather than S1 or Bal31 nuclease to clone yeast telomeres, very little telomeric DNA is lost. These clones were used to determine the DNA sequence of virtually the entire telomeric tract. Our results demonstrated that a slightly modified version, C2-3A(CA)1-6, of the consensus derived from sequence analysis of more-internal regions (J. Shampay, J. W. Szostak, and E. H. Blackburn, Nature [London] 310:154-157, 1984) extends to the very end of the chromosome. The sequence analysis also suggests that yeast telomeres consist of two domains: the proximal 120 to 150 base pairs, which appear to be protected from processes such as recombination, degradation, and elongation, and the distal portion of the telomere, which is more susceptible to these events.


1990 ◽  
Vol 10 (8) ◽  
pp. 4415-4419
Author(s):  
S S Wang ◽  
V A Zakian

By using T4 DNA polymerase rather than S1 or Bal31 nuclease to clone yeast telomeres, very little telomeric DNA is lost. These clones were used to determine the DNA sequence of virtually the entire telomeric tract. Our results demonstrated that a slightly modified version, C2-3A(CA)1-6, of the consensus derived from sequence analysis of more-internal regions (J. Shampay, J. W. Szostak, and E. H. Blackburn, Nature [London] 310:154-157, 1984) extends to the very end of the chromosome. The sequence analysis also suggests that yeast telomeres consist of two domains: the proximal 120 to 150 base pairs, which appear to be protected from processes such as recombination, degradation, and elongation, and the distal portion of the telomere, which is more susceptible to these events.


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