Protein: Transmembrane emp24 domain-containing protein 9 (GMP25) (Glycoprotein 25L2) (p24 family protein alpha-2) (p24alpha2) (p25) (Q9BVK6)
Organism: Homo sapiens (Human)
Function: Appears to be involved in vesicular protein trafficking, mainly in the early secretory pathway. In COPI vesicle-mediated retrograde transport involved in the coatomer recruitment to membranes of the early secretory pathway. Increases coatomer-dependent activity of ARFGAP2. Thought to play a crucial role in the specific retention of p24 complexes in cis-Golgi membranes; specifically contributes to the coupled localization of TMED2 and TMED10 in the cis-Golgi network. May be involved in organization of intracellular membranes, such as of the ER-Golgi intermediate compartment and the Golgi apparatus. Involved in ER localization of PTPN2 isoform PTPB.
Subcellular location: Endoplasmic reticulum membrane; Single-pass type I membrane protein. Golgi apparatus, cis-Golgi network membrane; Single-pass type I membrane protein. Endoplasmic reticulum-Golgi intermediate compartment membrane; Single-pass type I membrane protein. Golgi apparatus, trans-Golgi network membrane {ECO:0000250}; Single-pass type I membrane protein {ECO:0000250}. Note=Cycles between compartments of the early secretatory pathway.
Sequence: MAVELGVLLVRPRPGTGLGRVMRTLLLVLWLATRGSALYFHIGETEKKCFIEEIPDETMVIGNYRTQLYDKQREEYQPATPGLGMFVEVKDPEDKVILARQYGSEGRFTFTSHTPGEHQICLHSNSTKFSLFAGGMLRVHLDIQVGEHANDYAEIAAKDKLSELQLRVRQLVEQVEQIQKEQNYQRWREERFRQTSESTNQRVLWWSILQTLILVAIGVWQMRHLKSFFEAKKLV
InterPro domains: - IPR009038: GOLD domain (domain) [37-230]
- IPR015720: Transmembrane emp24 domain-containing protein (family) [24-230]
Interaction partners: - Transmembrane emp24 domain-containing protein 10
- Transmembrane emp24 domain-containing protein 2
- Transmembrane emp24 domain-containing protein 5
- Transmembrane emp24 domain-containing protein 3
- Transmembrane emp24 domain-containing protein 1
- Transmembrane emp24 domain-containing protein 7
- Surfeit locus protein 4
- Alpha-N-acetylglucosaminidase
- Vesicle-trafficking protein SEC22b
- Syntaxin-5
Gene Ontology annotations:
Molecular Function (MF): GO:0003674 (molecular function), GO:0005488 (binding), GO:0005515 (protein binding)
Biological Process (BP): GO:0008150 (biological process), GO:0065007 (biological regulation), GO:0048518 (positive regulation of biological process), GO:0050789 (regulation of biological process), GO:0048583 (regulation of response to stimulus), GO:0023051 (regulation of signaling), GO:0023056 (positive regulation of signaling), GO:0048584 (positive regulation of response to stimulus), GO:0050794 (regulation of cellular process), GO:0048522 (positive regulation of cellular process), GO:0009967 (positive regulation of signal transduction), GO:0010647 (positive regulation of cell communication), GO:0009966 (regulation of signal transduction), GO:0010646 (regulation of cell communication), GO:1902533 (positive regulation of intracellular signal transduction), GO:1902531 (regulation of intracellular signal transduction), GO:0043123 (positive regulation of I-kappaB kinase/NF-kappaB signaling), GO:0043122 (regulation of I-kappaB kinase/NF-kappaB signaling)
Cellular Component (CC): GO:0005575 (cellular component), GO:0110165 (cellular anatomical entity), GO:0005622 (intracellular anatomical structure), GO:0043226 (organelle), GO:0098793 (presynapse), GO:0005737 (cytoplasm), GO:0012505 (endomembrane system), GO:0030054 (cell junction), GO:0008021 (synaptic vesicle), GO:0031410 (cytoplasmic vesicle), GO:0043229 (intracellular organelle), GO:0045202 (synapse), GO:0043227 (membrane-bounded organelle), GO:0030133 (transport vesicle), GO:0070382 (exocytic vesicle), GO:0099503 (secretory vesicle), GO:0043231 (intracellular membrane-bounded organelle), GO:0031982 (vesicle), GO:0097708 (intracellular vesicle)