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GBF1
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For Research Use Only. Not For Clinical Use.
This gene encodes a member of the Sec7 domain family. The encoded protein is a guanine nucleotide exchange factor that regulates the recruitment of proteins to membranes by mediating GDP to GTP exchange. The encoded protein is localized to the Golgi apparatus and plays a role in vesicular trafficking by activating ADP ribosylation factor 1. The encoded protein has also been identified as an important host factor for viral replication. Multiple transcript variants have been observed for this gene.
Protein class
Plasma proteins
Predicted location
Intracellular
Single cell type specificity
Low cell type specificity
Immune cell specificity
Immune cell enhanced (basophil)
Cell line specificity
Low cell line specificity
Interaction
Can form homodimers and probably homotetramers (PubMed:17640864). Interacts with COPG1; the interaction is independent on ARF1 activation (PubMed:19039328). Interacts with ARF1, ARF3, ARF4 and ARF5 (PubMed:15616190, PubMed:17956946). Interacts with RAB1B (GTP-bound form); required for GBF1 membrane association (PubMed:17429068). Interacts with GGA1, GGA2 and GGA3 (PubMed:17666033). Interacts with USO1 (PubMed:12634853). Interacts (via SEC7 domain) with PNPLA2 (via C-terminus); the interaction is direct (PubMed:21789191). Interacts with ARMH3 (PubMed:31519766). (Microbial infection) Interacts with poliovirus protein 3A.
Molecular function
Guanine-nucleotide releasing factor
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