NDFIP1 Antibody – Rabbit Polyclonal

The protein encoded by this gene belongs to a small group of evolutionarily conserved proteins with three transmembrane domains. It is a potential target for ubiquitination by the Nedd4 family of proteins. This protein is thought to be part of a family of integral Golgi membrane proteins. [provided by RefSeq, Jul 2008]

NDFIP1: Activates HECT domain-containing E3 ubiquitin-protein ligases, including NEDD4 and ITCH, and consequently modulates the stability of their targets. As a result, controls many cellular processes. Prevents chronic T-helper cells-mediated inflammation by activating ITCH and thus controlling JUNB degradation. In cortical neurons, mediates the ubiquitination of SLC11A2/DMT1 by NEDD4L, leading to down-regulation of the divalent metal transporter and protection of the cells from cobalt and iron toxicity. Modulates EGFR signaling through multiple pathways. In particular, may regulate the ratio of AKT1-to-MAPK8 signaling in response to EGF, acting on AKT1 probably through PTEN destabilization and on MAPK8 through ITCH-dependent MAP2K4 inactivation. As a result, may control cell growth rate. 2 isoforms of the human protein are produced by alternative splicing.

Protein type: Membrane protein, multi-pass; Adaptor/scaffold; Membrane protein, integral

Chromosomal Location of Human Ortholog: 5q31.3

Cellular Component: Golgi membrane; perinuclear region of cytoplasm; extracellular region; integral to membrane; endosome membrane; cell cortex

Molecular Function: signal transducer activity; protein binding; WW domain binding

Biological Process: negative regulation of interleukin-4 production; positive regulation of I-kappaB kinase/NF-kappaB cascade; ubiquitin-dependent protein catabolic process via the multivesicular body pathway; cellular iron ion homeostasis; regulation of lymphocyte differentiation; regulation of myeloid leukocyte differentiation; signal transduction; negative regulation of isotype switching to IgE isotypes; negative regulation of T cell proliferation; negative regulation of T-helper 2 type immune response; positive regulation of protein ubiquitination; negative regulation of inflammatory response; positive regulation of protein catabolic process; negative regulation of protein transport; regulation of isotype switching to IgG isotypes; negative regulation of transporter activity