MBTPS1 (S1P) cleaves CREB3L4

Stable Identifier
Reaction [transition]
Homo sapiens
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MBTPS1 (S1P) cleaves the lumenal domain of CREB3L4 (Stirling and O'Hare 2006, Ben-Aicha et al. 2007). Based on homology with SREBFs (SREBPs), other CREB3 proteins, and the mouse homolog Creb3l4 (Tisp40) the cleavage site is inferred to be at a RNIL motif at amino acid 338. The C-terminal domain of CREB3L4 interferes with cleavage and therefore may regulate the process (Stirling and O'Hare 2006). Dithiothreitol (DTT) causes trafficking but not cleavage of CREB3L4.

Literature References
PubMed ID Title Journal Year
16236796 CREB4, a transmembrane bZip transcription factor and potential new substrate for regulation and cleavage by S1P

Stirling, J, O'Hare, P

Mol. Biol. Cell 2006
17712038 Transcriptional profiling of genes that are regulated by the endoplasmic reticulum-bound transcription factor AIbZIP/CREB3L4 in prostate cells

Ben Aicha, S, Lessard, J, Pelletier, M, Fournier, A, Calvo, E, Labrie, C

Physiol. Genomics 2007
Catalyst Activity

serine-type endopeptidase activity of MBTPS1 [Golgi membrane]

Inferred From
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