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Any constituent part of the cytoplasm, all of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures. Any constituent part of the 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 network of interconnected tubular and cisternal structures located at the convex side of the Golgi apparatus, which abuts the endoplasmic reticulum. 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. The lipid bilayer surrounding any of the compartments that make up the cis-Golgi network. A large complex present on the cis-Golgi that acts prior to SNARE complex assembly to mediate vesicle docking and fusion. Ras guanyl-nucleotide exchange factor activity has been demonstrated for this complex in S. cerevisiae. A constituent part of an intracellular organelle, an organized structure of distinctive morphology and function, occurring within the cell. Includes constituent parts of the nucleus, mitochondria, plastids, vacuoles, vesicles, ribosomes and the cytoskeleton but excludes the plasma membrane.

View Gene Ontology (GO) Term

GO TERM SUMMARY
Name: cis-Golgi network
Acc: GO:0005801
Aspect: Cellular Component
Desc: The network of interconnected tubular and cisternal structures located at the convex side of the Golgi apparatus, which abuts the endoplasmic reticulum.
Synonyms:
  • Golgi cis face
  • forming face
  • Golgi cis-face
  • cis Golgi network
Proteins in PDR annotated with:
   This term: 55 [Search]
   Term or descendants: 85 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0005801 - cis-Golgi network (interactive image map)
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