EOG8WM789 GO:0005794 1/99 Golgi apparatus cellular_component "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." [ISBN:0198506732] EOG8WM789 GO:0070971 1/99 endoplasmic reticulum exit site cellular_component "An endoplasmic reticulum part at which COPII-coated vesicles are produced." [NIF_Subcellular:sao124393998, PMID:15623529, PMID:16957052] EOG8WM789 GO:0016021 1/99 integral component of membrane cellular_component "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." [GOC:dos, GOC:go_curators] EOG8WM789 GO:0007030 1/99 Golgi organization biological_process "A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of the Golgi apparatus." [GOC:dph, GOC:jl, GOC:mah] EOG8WM789 GO:0003676 1/99 nucleic acid binding molecular_function "Interacting selectively and non-covalently with any nucleic acid." [GOC:jl] EOG8WM789 GO:0009306 1/99 protein secretion biological_process "The controlled release of proteins from a cell." [GOC:ai] EOG8WM789 GO:0000137 1/99 Golgi cis cisterna cellular_component "The Golgi cisterna closest to the endoplasmic reticulum; the first processing compartment through which proteins pass after export from the ER." [ISBN:0815316194] EOG8WM789 GO:0008270 1/99 zinc ion binding molecular_function "Interacting selectively and non-covalently with zinc (Zn) ions." [GOC:ai] EOG8WM789 GO:0006887 1/99 exocytosis biological_process "A process of secretion by a cell that results in the release of intracellular molecules (e.g. hormones, matrix proteins) contained within a membrane-bounded vesicle by fusion of the vesicle with the plasma membrane of a cell. This is the process in which most molecules are secreted from eukaryotic cells." [GOC:mah, ISBN:0716731363] EOG8WM789 GO:0000139 1/99 Golgi membrane cellular_component "The lipid bilayer surrounding any of the compartments of the Golgi apparatus." [GOC:mah]