Protein: Cyclic AMP-responsive element-binding protein 3 (CREB-3) (cAMP-responsive element-binding protein 3) (Leucine zipper protein) (Luman) (Transcription factor LZIP-alpha) [Cleaved into: Processed cyclic AMP-responsive element-binding protein 3 (N-terminal Luman) (Transcriptionally active form)] (O43889)
Organism: Homo sapiens (Human)
Function: Endoplasmic reticulum (ER)-bound sequence-specific transcription factor that directly binds DNA and activates transcription. Plays a role in the unfolded protein response (UPR), promoting cell survival versus ER stress-induced apoptotic cell death. Also involved in cell proliferation, migration and differentiation, tumor suppression and inflammatory gene expression. Acts as a positive regulator of LKN-1/CCL15-induced chemotaxis signaling of leukocyte cell migration. Associates with chromatin to the HERPUD1 promoter. Also induces transcriptional activation of chemokine receptors.
Subcellular location: [Isoform 1]: Endoplasmic reticulum membrane {ECO:0000269|PubMed:10623756, ECO:0000269|PubMed:12138176, ECO:0000269|PubMed:18391022}; Single-pass type II membrane protein {ECO:0000255, ECO:0000269|PubMed:12138176}. Golgi apparatus {ECO:0000269|PubMed:10623756}. Note=Colocalizes with HCFC1 in neuronal cell bodies of the trigeminal ganglia (PubMed:10623756). Colocalizes with DCSTAMP in the ER membrane of immature dendritic cell (DC) (PubMed:20546900). Colocalizes with CANX, CCR1, HCFC1 in the ER membrane (PubMed:10623756). {ECO:0000269|PubMed:10623756, ECO:0000269|PubMed:20546900}.; SUBCELLULAR LOCATION: [Isoform 1]: Cytoplasm. Note=(Microbial infection) Sequestered into the cytoplasm by the HCV core protein. {ECO:0000269|PubMed:10675342}.; SUBCELLULAR LOCATION: [Isoform 2]: Nucleus {ECO:0000269|PubMed:19779205}. Cytoplasm {ECO:0000269|PubMed:19779205}. Note=Predominantly in the nucleus (PubMed:19779205). Not associated with membranes (PubMed:19779205). {ECO:0000269|PubMed:19779205}.; SUBCELLULAR LOCATION: [Processed cyclic AMP-responsive element-binding protein 3]: Nucleus. Note=Upon RIP activation the transcriptional active processed cyclic AMP-responsive element-binding protein 3 form translocates into the nucleus. Detected in the nucleus upon dendritic cell maturation and RIP activation. Colocalizes with CREBRF in nuclear foci. Colocalizes with CREBZF in promyelocytic leukemia protein nuclear bodies (PML-NB). {ECO:0000269|PubMed:10675342, ECO:0000269|PubMed:15705566, ECO:0000269|PubMed:18391022, ECO:0000269|PubMed:20546900}.
Interaction partners:
- Host cell factor 1
- Nuclear receptor subfamily 0 group B member 2
- CREB3 regulatory factor
- Cyclic AMP-responsive element-binding protein 3-like protein 2
- Cyclic AMP-responsive element-binding protein 3-like protein 4
- Dendritic cell-specific transmembrane protein
- Cyclic AMP-responsive element-binding protein 3-like protein 3
- Cyclic AMP-responsive element-binding protein 1
- Cyclic AMP-dependent transcription factor ATF-2
- Histone acetyltransferase p300
Sequence:
MELELDAGDQDLLAFLLEESGDLGTAPDEAVRAPLDWALPLSEVPSDWEVDDLLCSLLSPPASLNILSSSNPCLVHHDHTYSLPRETVSMDLESESCRKEGTQMTPQHMEELAEQEIARLVLTDEEKSLLEKEGLILPETLPLTKTEEQILKRVRRKIRNKRSAQESRRKKKVYVGGLESRVLKYTAQNMELQNKVQLLEEQNLSLLDQLRKLQAMVIEISNKTSSSSTCILVLLVSFCLLLVPAMYSSDTRGSLPAEHGVLSRQLRALPSEDPYQLELPALQSEVPKDSTHQWLDGSDCVLQAPGNTSCLLHYMPQAPSAEPPLEWPFPDLFSEPLCRGPILPLQANLTRKGGWLPTGSPSVILQDRYSG