A ribonucleoprotein complex containing small nucleolar RNA of the box C/D type.

An RNA-protein complex localized to the X chromosome of a male (or hermaphrodite in C. elegans) where it is required for the hyper-transcriptional activation of the X chromosome.

Catalysis of the reaction: S-adenosyl-L-methionine + histamine = S-adenosyl-L-homocysteine + Nt-methylhistamine.

A vesicle formed of membrane or protein, found in the cytoplasm of a cell.

A complex that catalyzes the transfer of an acetyl group to the N-terminal residue of a protein acceptor molecule.

A conserved complex that catalyzes the transfer of an acetyl group to an N-terminal Ser, Ala, Gly, or Thr residue of a protein acceptor molecule. In Saccharomyces the complex includes Nat1p and Ard1p, and may contain additional proteins.

A conserved complex that catalyzes the transfer of an acetyl group to the N-terminal residue of a protein acceptor molecule that has a Met-Glu, Met-Asp, Met-Asn, or Met-Met N-terminus. In Saccharomyces the complex includes Nat3p and Mdm20p.

A conserved complex that catalyzes the transfer of an acetyl group to the N-terminal residue of a protein acceptor molecule that has a Met-Ile, Met-Leu, Met-Trp, or Met-Phe N-terminus. In Saccharomyces the complex includes Mak3p, Mak10p, and Mak31p.

Interacting selectivzely with L-ascorbic acid, a six-carbon carbohydrate-like compound found in fruit and vegetables. It has vitamin C activity in humans and guinea pigs.

Interacting lelectively with cobalamin (vitamin B12), a water-soluble vitamin characterized by possession of a corrin nucleus containing a cobalt atom.

transmembrane receptor protein phosphatase activity

The catalysis of phosphate removal from a phosphotyrosine using aspartic acid as a nucleophile in a metal-dependent manner.

transmembrane receptor protein kinase activity

Any process that modulates the frequency, rate or extent of mRNA 3'-end processing, any process involved in forming the mature 3' end of an mRNA molecule.

negative regulation of mRNA 3'-end processing