In base excision repair, an altered base is removed by a DNA glycosylase enzyme, followed by excision of the resulting sugar phosphate. The small gap left in the DNA helix is filled in by the sequential action of DNA polymerase and DNA ligase.

The directed movement into, out of or within the cell of urea, the water-soluble compound H2N-CO-NH2, produced in the liver via the ornithine-urea cycle.

The ligation by DNA ligase of DNA strands. Ligation occurs after polymerase action to fill the gap left by the action of endonucleases during base-excision repair.

Catalysis of the hydrolysis of phosphodiester bonds in chains of RNA.

In nucleotide excision repair a small region of the strand surrounding the damage is removed from the DNA helix as an oligonucleotide. The small gap left in the DNA helix is filled in by the sequential action of DNA polymerase and DNA ligase. Nucleotide excision repair recognizes a wide range of substrates, including damage caused by UV irradiation (pyrimidine dimers and 6-4 photoproducts) and chemicals (intrastrand cross-links and bulky adducts).

The directed movement of monoamines, organic compounds containing one amino group, into, out of, within or between cells.

positive regulation of receptor mediated endocytosis

Any process that activates or increases the rate of receptor mediated endocytosis, the uptake of external materials by cells, utilizing receptors to ensure specificity of transport.

The process whose specific outcome is the progression of an embryo from zygote formation until the end of its embryonic life stage. The end of the embryonic stage is organism-specific and may be somewhat arbitrary. For example, it would be at birth for mammals, larval hatching for insects and seed dormancy in plants.

The process by which DNA replication is started; this involves the separation of a stretch of the DNA double helix, the recruitment of DNA polymerases and the initiation of polymerase action.

negative regulation of receptor mediated endocytosis

Any process that stops, prevents or reduces the rate of receptor mediated endocytosis, the uptake of external materials by cells, utilizing receptors to ensure specificity of transport.