BP

GO:0006886

intracellular protein transport

The directed movement of proteins in a cell, including the movement of proteins between specific compartments or structures within a cell, such as organelles of a eukaryotic cell.

IEA

BP

GO:0016192

vesicle-mediated transport

A cellular transport process in which transported substances are moved in membrane-bounded vesicles; transported substances are enclosed in the vesicle lumen or located in the vesicle membrane. The process begins with a step that directs a substance to the forming vesicle, and includes vesicle budding and coating. Vesicles are then targeted to, and fuse with, an acceptor membrane.

IEA

BP

GO:0019886

antigen processing and presentation of exogenous peptide antigen via MHC class II

The process in which an antigen-presenting cell expresses a peptide antigen of exogenous origin on its cell surface in association with an MHC class II protein complex. The peptide antigen is typically, but not always, processed from a whole protein.

TAS

BP

GO:0050690

regulation of defense response to virus by virus

Any viral process that modulates the frequency, rate, or extent of the antiviral response of the host cell or organism.

TAS

CC

GO:0000139

Golgi membrane

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

TAS

CC

GO:0005765

lysosomal membrane

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

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.

TAS

CC

GO:0005905

clathrin-coated pit

A part of the endomembrane system in the form of an invagination of a membrane upon which a clathrin coat forms, and that can be converted by vesicle budding into a clathrin-coated vesicle. Coated pits form on the plasma membrane, where they are involved in receptor-mediated selective transport of many proteins and other macromolecules across the cell membrane, in the trans-Golgi network, and on some endosomes.

IEA

CC

GO:0030119

AP-type membrane coat adaptor complex

Any of several heterotetrameric complexes that link clathrin (or another coat-forming molecule, as hypothesized for AP-3 and AP-4) to a membrane surface; they are found on coated pits and coated vesicles, and mediate sorting of cargo proteins into vesicles. Each AP complex contains two large (a beta and one of either an alpha, gamma, delta, or epsilon) subunits (110-130 kDa), a medium (mu) subunit (approximately 50 kDa), and a small (sigma) subunit (15-20 kDa).

TAS

CC

GO:0030659

cytoplasmic vesicle membrane

The lipid bilayer surrounding a cytoplasmic vesicle.

TAS

CC

GO:0030669

clathrin-coated endocytic vesicle membrane

The lipid bilayer surrounding a clathrin-coated endocytic vesicle.

TAS

CC

GO:0032588

trans-Golgi network membrane

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

TAS

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

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

MF

GO:0008565

protein transporter activity

Enables the directed movement of proteins into, out of or within a cell, or between cells.

IEA