HYOU1

The protein encoded by this gene belongs to the heat shock protein 70 family. This gene uses alternative transcription start sites. A cis-acting segment found in the 5' UTR is involved in stress-dependent induction, resulting in the accumulation of this protein in the endoplasmic reticulum (ER) under hypoxic conditions. The protein encoded by this gene is thought to play an important role in protein folding and secretion in the ER. Since suppression of the protein is associated with accelerated apoptosis, it is also suggested to have an important cytoprotective role in hypoxia-induced cellular perturbation. This protein has been shown to be up-regulated in tumors, especially in breast tumors, and thus it is associated with tumor invasiveness. This gene also has an alternative translation initiation site, resulting in a protein that lacks the N-terminal signal peptide. This signal peptide-lacking protein, which is only 3 amino acids shorter than the mature protein in the ER, is thought to have a housekeeping function in the cytosol. In rat, this protein localizes to both the ER by a carboxy-terminal peptide sequence and to mitochondria by an amino-terminal targeting signal. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Mar 2014]

Hypoxia Up-Regulated 1

Has a pivotal role in cytoprotective cellular mechanisms triggered by oxygen deprivation. May play a role as a molecular chaperone and participate in protein folding.

Cellular response to hypoxia Source: ParkinsonsUK-UCL
Endoplasmic reticulum to Golgi vesicle-mediated transport Source: ParkinsonsUK-UCL
Negative regulation of endoplasmic reticulum stress-induced neuron intrinsic apoptotic signaling pathway Source: Ensembl
Negative regulation of hypoxia-induced intrinsic apoptotic signaling pathway Source: ParkinsonsUK-UCL
Response to endoplasmic reticulum stress Source: ParkinsonsUK-UCL
Response to ischemia Source: ParkinsonsUK-UCL

Endoplasmic reticulum lumen

Immunodeficiency 59 and hypoglycemia (IMD59):
An autosomal recessive primary immunologic disorder characterized by combined immunodeficiency, granulocytopenia, B-cell and dendritic cell deficiency, recurrent septic infections of the respiratory tract, skin and mucous membranes, and disturbed glucose metabolism.