- telomeric 3' overhang formation
The formation of the single stranded telomeric 3' overhang, a conserved feature that ranges in length from 12 nt in budding yeast to approximately 500 nt in humans.
- regulatory RNA binding
Binding to a small regulatory RNA, a short RNA (usually 50-200 nt long) that is either independently transcribed or processed from a longer RNA by an RNAse enzyme.
- ribonuclease III activity
Catalysis of the endonucleolytic cleavage of RNA with 5'-phosphomonoesters and 3'-OH termini; makes two staggered cuts in both strands of dsRNA, leaving a 3' overhang of 2 nt.
- lsiRNA processing
A process leading to the generation of a functional long small interfering RNA (lsiRNA). lsiRNAs are class of siRNAs 30 to 40 nt in length. lsiRNAs are induced by pathogen infection or under specific growth conditions.
- exocytic insertion of neurotransmitter receptor to postsynaptic membrane
The exocytic fusion of neurotransmitter receptor containing vesicles with the postsynaptic membrane resulting in the integration of NT receptors, enabling them to participate in neurotransmitter reception. This process includes tethering and docking steps that prepare vesicles for fusion.
- ribonucleotide excision repair
The pathway by which a ribonucleotide is removed from DNA and replaced by a deoxyribonucleotide. The ribonucleotide is incised by RNase H2, and further excised by an endonuclease. The resulting 1 nt gap is then repaired by DNA polymerase and DNA ligase.
- primary piRNA processing
The process involved in converting precursor piRNAs into non-overlapping, contiguous primary piRNAs (approximately 24-30-nt piRNAs with a preference for a 5' uridine (U) via the endonucleolytic activity of cytosolic PIWI. This may include pre-piRNA maturation of 3' ends by trimming and 2'-O-methylation.
- mRNA 3'-end processing by stem-loop binding and cleavage
Any mRNA 3'-end processing that involves the binding to and cleavage of a stem-loop structure. For example, histone mRNAs contain a highly conserved stem-loop sequence at the 3' end of the mRNA with a 6 base pairs (bp) stem and a 4-nt loop. The mRNA is cleaved between these two elements, after the fourth or fifth nucleotide, which is typically an adenosine.
- 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.