The initial attachment of a vesicle membrane to a target membrane, mediated by proteins protruding from the membrane of the vesicle and the target membrane, during exocytosis.

Catalysis of the reaction: deoxynucleoside triphosphate + DNA(n) = diphosphate + DNA(n+1). Catalyzes RNA-template-directed extension of the 3'- end of a DNA strand by one deoxynucleotide at a time.

Fusion of the membrane of a transport vesicle with its target membrane.

The process whereby cells take in liquid material from their external environment; literally 'cell drinking'. Liquid is enclosed in vesicles, formed by invagination of the plasma membrane. These vesicles then move into the cell and pass their contents to endosomes.

The process whereby phagocytes engulf external particulate material. The particles are initially contained within phagocytic vacuoles (phagosomes), which then fuse with primary lysosomes to effect digestion of the particles.

A structure composed of a very long molecule of DNA and associated proteins (e.g. histones) that carries hereditary information.

Telomerase is a ribonucleoprotein enzyme complex, with a minimal catalytic core composed of a catalytic reverse transcriptase subunit and an RNA subunit that provides the template for telomeric DNA addition. In vivo, the holoenzyme complex often contains additional subunits.

Catalysis of the reaction: NAD+ + (ADP-D-ribosyl)(n)-acceptor = nicotinamide + (ADP-D-ribosyl)(n+1)-acceptor.

Catalysis of the reaction: ATP + NAD+ = ADP + NADP+.

Catalysis of the reaction: NAD+ + H2O = nicotinamide + ADP-ribose.

Any process which produces a nucleotide, a nucleobase linked to either beta-D-ribofuranose (ribonucleoside) or 2-deoxy-beta-D-ribofuranose, (a deoxyribonucleotide),from derivatives of it without de novo synthesis.

Catalysis of the reaction: NADH + H+ + acceptor = NAD+ + reduced acceptor.

Any process that modulates the frequency, rate or extent of the addition of an acetyl group to a histone protein.

Catalysis of the reaction: NAD(P)H + H+ + acceptor = NAD(P)+ + reduced acceptor.