Literature summary for 1.3.1.72 extracted from

Lu, X.; Li, Y.; Wang, W.; Chen, S.; Liu, T.; Jia, D.; Quan, X.; Sun, D.; Chang, A.K.; Gao, B.
3 beta-hydroxysteroid-DELTA 24 reductase (DHCR24) protects neuronal cells from apoptotic cell death induced by endoplasmic reticulum (ER) stress (2014), PLoS ONE, 9, e86753 .

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Protein Variants

Protein Variants	Comment	Organism
additional information	neuroblastoma N2A cells are infected with adenovirus expressing myc-tagged DHCR24 (Ad-DHCR24) or lacZ (Ad-lacZ, serving as a control) and subjected to endoplasmic reticulum-stress, induced with tunicamycin. Cells infected with Ad-DHCR24-myc are resistant to TM-induced apoptosis, and show weaker level of caspase-12 activity. The cells also exhibit lower levels of Bip and CHOP proteins than Ad-LacZ-infected cells. A stronger and rapid activation of PERK, and a prolonged activation of JNK and p38 are observed in Ad-LacZinfected cells. The generation of intracellular reactive oxygen species from endoplasmic reticulum stress is also diminished by the overexpression of DHCR24 and intracellular cholesterol level is elevated, accompanied by a well-organized formation of caveolae (cholesterol-rich microdomain) on the plasma membrane, and improved colocalization of caveolin-1 and insulin-like growth factor 1 receptor. DHCR24 can protect neuronal cells from apoptosis induced by endoplasmic reticulum stress	Homo sapiens

Localization

Localization	Comment	Organism	GeneOntology No.	Textmining
endoplasmic reticulum	-	Homo sapiens	5783	-

Organism

Organism	UniProt	Comment	Textmining
Homo sapiens	Q15392	-	-

Source Tissue

Source Tissue	Comment	Organism	Textmining
brain	-	Homo sapiens	-
additional information	not in glial cells	Homo sapiens	-
neuron	-	Homo sapiens	-

Synonyms

Synonyms	Comment	Organism
3 beta-hydroxysteroid-DELTA 24 reductase	-	Homo sapiens
DHCR24	-	Homo sapiens

General Information

General Information	Comment	Organism
physiological function	3beta-hydroxysteroid-DELTA24 reductase (DHCR24) is an endoplasmic reticulum-localized multifunctional enzyme that possesses anti-apoptotic and cholesterol-synthesizing activities. Overexpression of DHCR24 protects neuronal cells from tunicamycin-induced apoptosis. DHCR24 may function as a neuroprotective protein under endoplasmic reticulum stress. Overexpression of DHCR24 inhibits apoptotic cell signaling and reduces or delays activation of endoplasnic reticlum stress-related cell signaling during unfolded protein response in mouse embryonic fibroblast N2A cells, overview. Elevated cholesterol levels may contribute to the neuroprotective function of DHCR24	Homo sapiens

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Release 2023.1 (January 2023)