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Literature summary for 3.4.23.B24 extracted from

  • Hsu, F.F.; Yeh, C.T.; Sun, Y.J.; Chiang, M.T.; Lan, W.M.; Li, F.A.; Lee, W.H.; Chau, L.Y.
    Signal peptide peptidase-mediated nuclear localization of heme oxygenase-1 promotes cancer cell proliferation and invasion independent of its enzymatic activity (2015), Oncogene, 34, 2360-2370.
    View publication on PubMed
Search for more literature for 3.4.23.B24

Application

Application Comment Organism
medicine signal peptide peptidase SPP catalyzes the intramembrane cleavage of heme oxygenase HO-1. Coexpression of HO-1 with wild-type SPP promotes the nuclear localization of HO-1 in cells. Two adjacent intramembrane cleavage sites are located after S275 and F276 within the trans membrane segment. Mutations of S275F276 to A275L276 significantly hinder SPP-mediated cleavage and nuclear localization. Nuclear heme oxygenase-1 is detected in A549 and DU145 cancer cell lines expressing high levels of endogenous HO-1 and SPP. SPP knockdown or inhibition significantly reduces nuclear HO-1 localization in A549 and DU145 cells. The positive nuclear HO-1 stain is also evident in lung cancer tissues expressing high levels of HO-1 and SPP. Overexpression of a truncated HO-1 lacking the trans membrane segment in HeLa and H1299 cells promotes cell proliferation and migration/invasion Homo sapiens

Organism

Organism UniProt Comment Textmining
Homo sapiens
-
-
-

Source Tissue

Source Tissue Comment Organism Textmining
HEK-293T cell
-
 Homo sapiens
-
HeLa cell
-
 Homo sapiens
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NCI-H1299 cell
-
 Homo sapiens
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
heme oxygenase-1 + H2O
-
 Homo sapiens ? signal peptide peptidase SPP catalyzes the intramembrane cleavage of heme oxygenase-1. Two adjacent intramembrane cleavage sites are located after S275 and F276 within the trans membrane segment ?

General Information

General Information Comment Organism
physiological function signal peptide peptidase SPP catalyzes the intramembrane cleavage of heme oxygenase HO-1. Coexpression of HO-1 with wild-type SPP promotes the nuclear localization of HO-1 in cells. Two adjacent intramembrane cleavage sites are located after S275 and F276 within the trans membrane segment. Mutations of S275F276 to A275L276 significantly hinder SPP-mediated cleavage and nuclear localization. Nuclear heme oxygenase-1 is detected in A549 and DU145 cancer cell lines expressing high levels of endogenous HO-1 and SPP. SPP knockdown or inhibition significantly reduces nuclear HO-1 localization in A549 and DU145 cells. The positive nuclear HO-1 stain is also evident in lung cancer tissues expressing high levels of HO-1 and SPP. Overexpression of a truncated HO-1 lacking the trans membrane segment in HeLa and H1299 cells promotes cell proliferation and migration/invasion Homo sapiens