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Elongation Of The Telomeric Chromosome End

Stable Identifier
R-HSA-163090
Type
Reaction
Species
Homo sapiens
Compartment
Locations in the PathwayBrowser
Summation

The template of hTERC directs the sequential addition of nucleotides to the 3' telomeric DNA end. Following addition of a nucleotide, the template and catalytic site must move relative to one another within the telomerase RNP to place the appropriate template residue in the active site. As base-pairing and nucleotide addition occur at one end of the template, base pair melting occurs at the other (Collins and Greider 1993; Wang and Blackburn, 1997; Hammond and Cech 1998; Benjamin et al. 2000; Forstemann and Lingner 2005). This un-pairing is thought to reduce the energy used for mediating the subsequent translocation step. Nucleotide addition can occur up until the template boundary which in hTERC is defined by a helix called P1b (Chen and Greider 2003).

Literature References
PubMed ID Title Journal Year
15189140 Regulation of telomerase by telomeric proteins Annu Rev Biochem 2004
Participants
Participant Of
Event Information
Catalyst Activity
Catalyst Activity
Title
telomerase activity of Telomerase RNP [nucleoplasm]
Physical Entity
Activity
Orthologous Events