BP

GO:0006487

protein N-linked glycosylation

A protein glycosylation process in which a carbohydrate or carbohydrate derivative unit is added to a protein via the N4 atom of peptidyl-asparagine, the omega-N of arginine, or the N1' atom peptidyl-tryptophan.

IMP

BP

GO:0006874

cellular calcium ion homeostasis

Any process involved in the maintenance of an internal steady state of calcium ions at the level of a cell.

IGI

BP

GO:0032472

Golgi calcium ion transport

The directed movement of calcium ions (Ca2+) into, out of or within the Golgi apparatus.

IDA

BP

GO:0035751

regulation of lysosomal lumen pH

Any process that modulates the pH of the lysosomal lumen, measured by the concentration of the hydrogen ion.

IMP

CC

GO:0005765

lysosomal membrane

The lipid bilayer surrounding the lysosome and separating its contents from the cell cytoplasm.

IDA

CC

GO:0005794

Golgi apparatus

A compound membranous cytoplasmic organelle of eukaryotic cells, consisting of flattened, ribosome-free vesicles arranged in a more or less regular stack. The Golgi apparatus differs from the endoplasmic reticulum in often having slightly thicker membranes, appearing in sections as a characteristic shallow semicircle so that the convex side (cis or entry face) abuts the endoplasmic reticulum, secretory vesicles emerging from the concave side (trans or exit face). In vertebrate cells there is usually one such organelle, while in invertebrates and plants, where they are known usually as dictyosomes, there may be several scattered in the cytoplasm. The Golgi apparatus processes proteins produced on the ribosomes of the rough endoplasmic reticulum; such processing includes modification of the core oligosaccharides of glycoproteins, and the sorting and packaging of proteins for transport to a variety of cellular locations. Three different regions of the Golgi are now recognized both in terms of structure and function: cis, in the vicinity of the cis face, trans, in the vicinity of the trans face, and medial, lying between the cis and trans regions.

IDA

CC

GO:0010008

endosome membrane

The lipid bilayer surrounding an endosome.

IDA

CC

GO:0016021

integral component of membrane

The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.

IEA

CC

GO:0031901

early endosome membrane

The lipid bilayer surrounding an early endosome.

IEA

CC

GO:0031902

late endosome membrane

The lipid bilayer surrounding a late endosome.

IEA

CC

GO:0032588

trans-Golgi network membrane

The lipid bilayer surrounding any of the compartments that make up the trans-Golgi network.

IDA

CC

GO:0043231

intracellular membrane-bounded organelle

Organized structure of distinctive morphology and function, bounded by a single or double lipid bilayer membrane and occurring within the cell. Includes the nucleus, mitochondria, plastids, vacuoles, and vesicles. Excludes the plasma membrane.

IDA