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

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.

Combining with an apolipoprotein, the protein component of a lipoprotein, to initiate a change in cell activity.

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.

Combining with apolipoprotein E to initiate a change in cell activity.

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.

Increase in size of the cumulus surrounding the oocyte including change in morphology due to proliferation and dispersion of cumulus cells.

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.

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

The formation from simpler components of heparin, any member of a group of glycosaminoglycans of average Mr (6000-20000), consisting predominantly of alternating alpha1-

Any process that modulates the frequency, rate or extent of cell growth.