Catalysis of the transfer of a methyl group from a donor to a nucleoside residue in a tRNA molecule.

Catalysis of the reaction: UDP-galactose + N-acetyl-D-galactosaminyl-(N-acetylneuraminyl)-D-galactosyl-1,4-beta-D-glucosyl-N-acylsphingosine = UDP + D-galactosyl-1,3-beta-N-acetyl-D-galactosaminyl-(N-acetylneuraminyl)-D-galactosyl-D-glucosyl-N-acylsphingosine.

The process whereby a relatively unspecialized monocyte acquires the specialized features of a macrophage.

Interacting selectively with acetylcholine, an acetic acid ester of the organic base choline that functions as a neurotransmitter, released at the synapses of parasympathetic nerves and at neuromuscular junctions.

Catalysis of the reaction: S-adenosyl-L-methionine + tRNA = S-adenosyl-L-homocysteine + tRNA containing N7-methylguanine.

The breakdown into simpler components of heme, any compound of iron complexed in a porphyrin (tetrapyrrole) ring.

Catalysis of the reaction: succinate + quinone = fumarate + quinol.

The chemical reactions involving heme, any compound of iron complexed in a porphyrin (tetrapyrrole) ring.

The breakdown into simpler components of D-amino acids, the dextrorotatory isomer of amino acids.

Combining with a lipoprotein to initiate a change in cell activity. A lipoprotein is any conjugated, water-soluble protein in which the nonprotein moiety consists of a lipid or lipids; the lipid may be triacylglycerol, cholesterol, or phospholipid, or a combination of these.

Interacting selectively with a SH2 domain (Src homology 2) of a protein, a protein domain of about 100 amino-acid residues and belonging to the alpha + beta domain class.

Differentiation of theca and granulosa cells into luteal cells. Also other processes involved in the formation of a corpus luteum after ovulation.

The process after reinitiation of meiosis commonly starting with germinal vesicle breakdown up to the second meiotic arrest prior to fertilization.

Catalysis of the reaction: UDP-glucose + N-acylsphingosine = UDP + D-glucosyl-N-acylsphingosine.