- obsolete telomere
OBSOLETE. A complex of DNA and protein that seals the end of a chromosome. The telomeric DNA consists of simple tandemly repeated sequences specific for each species. Typically one strand is G-rich and the other C-rich. The G-rich strand forms a 3'-terminal overhang, the length of which varies with species. The single strand overhang is bound by a variety of proteins, including telomere capping proteins that bind to the single-stranded DNA.
- chromosome, telomeric repeat region
A complex of DNA and protein that seals the end of a chromosome. The telomeric repeat DNA consists of simple tandemly repeated sequences specific for each species. Typically one strand is G-rich and the other C-rich. The G-rich strand forms a 3'-terminal overhang, the length of which varies with species. The single strand overhang is bound by a variety of proteins, including telomere capping proteins that bind to the single-stranded DNA and seal the telomeric loop.
- positive regulation of DNA strand elongation
Any process that increases the rate, frequency or extent of DNA strand elongation. DNA strand elongation is the DNA metabolic process in which an existing DNA strand is extended by activities including the addition of nucleotides to the 3' end of the strand.
- regulation of DNA strand elongation
Any process that modulates the rate, frequency or extent of DNA strand elongation. DNA strand elongation is the DNA metabolic process in which an existing DNA strand is extended by activities including the addition of nucleotides to the 3' end of the strand.
- T/G mismatch-specific endonuclease activity
Catalysis of the repair of T/G mismatches arising from deamination of 5-methylcytosine in DNA by nicking double-stranded DNA within the sequence CT(AT)GN or NT(AT)GG next to the mismatched thymidine residue. The incision is mismatch-dependent and strand-specific, in favor of the G-containing strand. The incision serves as a starting point for subsequent excision repair by DNA polymerase I, which excises thymidine and reinserts cytidine.
- positive regulation of strand invasion
Any process that increases the rate, frequency or extent of strand invasion. Strand invasion is the process in which the nucleoprotein complex (composed of the broken single-strand DNA and the recombinase) searches and identifies a region of homology in intact duplex DNA. The broken single-strand DNA displaces the like strand and forms Watson-Crick base pairs with its complement, forming a duplex in which each strand is from one of the two recombining DNA molecules.