BP

GO:0006623

protein targeting to vacuole

The process of directing proteins towards the vacuole, usually using signals contained within the protein.

IBA

BP

GO:0006888

ER to Golgi vesicle-mediated transport

The directed movement of substances from the endoplasmic reticulum (ER) to the Golgi, mediated by COP II vesicles. Small COP II coated vesicles form from the ER and then fuse directly with the cis-Golgi. Larger structures are transported along microtubules to the cis-Golgi.

TAS

BP

GO:0006891

intra-Golgi vesicle-mediated transport

The directed movement of substances within the Golgi, mediated by small transport vesicles. These either fuse with the cis-Golgi or with each other to form the membrane stacks known as the cis-Golgi reticulum (network).

IBA

BP

GO:0006896

Golgi to vacuole transport

The directed movement of substances from the Golgi to the vacuole.

IBA

BP

GO:0036498

IRE1-mediated unfolded protein response

A series of molecular signals mediated by the endoplasmic reticulum stress sensor IRE1 (Inositol-requiring transmembrane kinase/endonuclease). Begins with activation of IRE1 in response to endoplasmic reticulum (ER) stress, and ends with regulation of a downstream cellular process, e.g. transcription. One target of activated IRE1 is the transcription factor HAC1 in yeast, or XBP1 in mammals; IRE1 cleaves an intron of a mRNA coding for HAC1/XBP1 to generate an activated HAC1/XBP1 transcription factor, which controls the up regulation of UPR-related genes. At least in mammals, IRE1 can also signal through additional intracellular pathways including JNK and NF-kappaB.

TAS

BP

GO:0042147

retrograde transport, endosome to Golgi

The directed movement of membrane-bounded vesicles from endosomes back to the trans-Golgi network where they are recycled for further rounds of transport.

IBA

BP

GO:0048208

COPII vesicle coating

The addition of COPII proteins and adaptor proteins to ER membranes during the formation of transport vesicles, forming a vesicle coat.

TAS

BP

GO:0048280

vesicle fusion with Golgi apparatus

The joining of the lipid bilayer membrane around a vesicle to the lipid bilayer membrane around the Golgi.

IBA

BP

GO:0061025

membrane fusion

The membrane organization process that joins two lipid bilayers to form a single membrane.

TAS

CC

GO:0000139

Golgi membrane

The lipid bilayer surrounding any of the compartments of the Golgi apparatus.

TAS

CC

GO:0005789

endoplasmic reticulum membrane

The lipid bilayer surrounding the endoplasmic reticulum.

IBA|TAS

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:0005829

cytosol

The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.

IEA

CC

GO:0012507

ER to Golgi transport vesicle membrane

The lipid bilayer surrounding a vesicle transporting substances from the endoplasmic reticulum to the Golgi.

IBA|TAS

CC

GO:0016020

membrane

A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.

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:0031201

SNARE complex

A protein complex involved in membrane fusion; a stable ternary complex consisting of a four-helix bundle, usually formed from one R-SNARE and three Q-SNAREs with an ionic layer sandwiched between hydrophobic layers. One well-characterized example is the neuronal SNARE complex formed of synaptobrevin 2, syntaxin 1a, and SNAP-25.

IBA

CC

GO:0031902

late endosome membrane

The lipid bilayer surrounding a late endosome.

IBA

CC

GO:0033116

endoplasmic reticulum-Golgi intermediate compartment membrane

The lipid bilayer surrounding any of the compartments of the endoplasmic reticulum (ER)-Golgi intermediate compartment system.

TAS

MF

GO:0000149

SNARE binding

Interacting selectively and non-covalently with a SNARE (soluble N-ethylmaleimide-sensitive factor attached protein receptor) protein.

IBA

MF

GO:0005215

transporter activity

Enables the directed movement of substances (such as macromolecules, small molecules, ions) into, out of or within a cell, or between cells.

TAS

MF

GO:0005484

SNAP receptor activity

Acting as a marker to identify a membrane and interacting selectively with one or more SNAREs on another membrane to mediate membrane fusion.

IBA

MF

GO:0005515

protein binding

Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).

IPI