Transport of Antigen peptide in to ER

Stable Identifier
R-HSA-983144
Type
Reaction
Species
Homo sapiens
Compartment
Locations in the PathwayBrowser
General
SVG |   | PPTX  | SBGN
Click the image above or here to open this reaction in the Pathway Browser
The layout of this reaction may differ from that in the pathway view due to the constraints in pathway layout

Ttransporter associated with antigen processing (TAP) is a heterodimeric complex, composed of TAP1 and TAP2 proteins, members of the ATP-binding cassette (ABC) superfamily. TAP consists of two transmembrane domains (TMDs) and two cytosolic nucleotide-binding domains. Peptide binding to the cytosolic-facing cavity formed by the TMDs causes it to undergo a conformational change that induces ATP hydrolysis, forcing the opening of a pore and translocation of the peptide into the ER lumen. TAP transports peptides in the range of 8-16 amino acids into the ER, which is the peptide length typically generated by the immunoproteasome.

Literature References
Participants
Participates
Catalyst Activity

ABC-type peptide antigen transporter activity of TAP [endoplasmic reticulum membrane]

Orthologous Events
Authored
Reviewed
Created
Cite Us!