Protein: bZIP transcription factor 17 (AtbZIP17) (O22208)
Organism: Arabidopsis thaliana (Mouse-ear cress)
Function: Transcriptional activator involved in salt and osmotic stress responses. Functions as a stress sensor and transducer in a signaling pathway that resembles an ER stress response. Following salt stress, BZIP17 is cleaved by SBT6.1 (S1P) and S2P at the C-terminus and the N-terminal bZIP component is translocated to the nucleus, where it activates the expression of salt stress response genes. Functions as a stress sensor and transducer in ER stress signaling pathway. ER stress induces proteolysis of BZIP17 by SBT6.1 (S1P) and S2P, and the N-terminal bZIP component is translocated to the nucleus, where it activates the expression and production of ER chaperones, as well as protein involved in brassinosteroid (BR) signaling, which is required for stress acclimation and growth.
Subcellular location: Endoplasmic reticulum membrane {ECO:0000269|PubMed:20876872, ECO:0000305|PubMed:17662035}; Single-pass membrane protein {ECO:0000255}. Golgi apparatus membrane {ECO:0000305|PubMed:20876872}; Single-pass membrane protein {ECO:0000255}. Nucleus {ECO:0000269|PubMed:17662035, ECO:0000269|PubMed:20876872}. Note=Translocates to the nucleus following salt treatment, heat shock or tunicamycin treatment (ER stress) (PubMed:17662035, PubMed:20876872). Relocation of BZIP17 from ER to the nucleus occurs through the Golgi and is S2P-dependent (PubMed:20876872). {ECO:0000269|PubMed:17662035, ECO:0000269|PubMed:20876872}.
InterPro domains:
- IPR004827: Basic-leucine zipper domain (domain) [226-290]
- IPR046347: Basic-leucine zipper domain superfamily (homologous_superfamily) [230-288]
Sequence:
MAEPITKEQPPPPAPDPNSTYPPPSDFDSISIPPLDDHFSDQTPIGELMSDLGFPDGEFELTFDGMDDLYFPAENESFLIPINTSNQEQFGDFTPESESSGISGDCIVPKDADKTITTSGCINRESPRDSDDRCSGADHNLDLPTPLSSQGSGNCGSDVSEATNESSPKSRNVAVDQKVKVEEAATTTTSITKRKKEIDEDLTDESRNSKYRRSGEDADASAVTGEEDEKKRARLMRNRESAQLSRQRKKHYVEELEEKVRNMHSTITDLNGKISYFMAENATLRQQLGGNGMCPPHLPPPPMGMYPPMAPMPYPWMPCPPYMVKQQGSQVPLIPIPRLKPQNTLGTSKAKKSESKKSEAKTKKVASISFLGLLFCLFLFGALAPIVNVNYGGISGAFYGNYRSNYITDQIYSQHRDRVLDTSRSGAGTGVSNSNGMHRGRDSDRGARKNISATESSVTPGNGSEPLVASLFVPRNDKLVKIDGNLIINSILASEKAVASRKASESKERKADLMISKDYTPALPLPDVGRTEELAKHLYRSKAEKQKALSSGSADTLKDQVKTKAANGEMQQWFREGVAGPMFSSGMCTEVFQFDVSSTSGAIIPAATNVSAEHGKNTTDTHKQQNRRILRGLPIPLPGSDFNLTKEHQRNSSSKEIKPASSMVVSVLVDPREGGDGDIDGMIGGPKSLSRVFVVVLLDSAKYVTYSCVLPRSGAPHLVTT
Predicted GO terms:
Molecular Function (MF): GO:0003674 (molecular function), GO:0005488 (binding), GO:0005515 (protein binding)
Biological Process (BP): GO:0008150 (biological process), GO:0048518 (positive regulation of biological process), GO:0050789 (regulation of biological process), GO:0023052 (signaling), GO:0065007 (biological regulation), GO:0050896 (response to stimulus), GO:0009987 (cellular process), GO:0009628 (response to abiotic stimulus), GO:0042221 (response to chemical), GO:0019222 (regulation of metabolic process), GO:0048522 (positive regulation of cellular process), GO:0050794 (regulation of cellular process), GO:0009893 (positive regulation of metabolic process), GO:0051716 (cellular response to stimulus), GO:0006950 (response to stress), GO:0007154 (cell communication), GO:0007165 (signal transduction), GO:0009266 (response to temperature stimulus), GO:0010604 (positive regulation of macromolecule metabolic process), GO:0060255 (regulation of macromolecule metabolic process), GO:0010033 (response to organic substance), GO:0009891 (positive regulation of biosynthetic process), GO:0009408 (response to heat), GO:0030968 (endoplasmic reticulum unfolded protein response), GO:0031325 (positive regulation of cellular metabolic process), GO:0070887 (cellular response to chemical stimulus), GO:0033554 (cellular response to stress), GO:0009889 (regulation of biosynthetic process), GO:0035966 (response to topologically incorrect protein), GO:0051171 (regulation of nitrogen compound metabolic process), GO:0031323 (regulation of cellular metabolic process), GO:0080090 (regulation of primary metabolic process), GO:0051173 (positive regulation of nitrogen compound metabolic process), GO:0010556 (regulation of macromolecule biosynthetic process), GO:0071310 (cellular response to organic substance), GO:0010468 (regulation of gene expression), GO:1901522 (positive regulation of transcription from RNA polymerase II promoter involved in cellular response to chemical stimulus), GO:0034976 (response to endoplasmic reticulum stress), GO:0010557 (positive regulation of macromolecule biosynthetic process), GO:0045935 (positive regulation of nucleobase-containing compound metabolic process), GO:0051254 (positive regulation of RNA metabolic process), GO:0035967 (cellular response to topologically incorrect protein), GO:0031326 (regulation of cellular biosynthetic process), GO:0019219 (regulation of nucleobase-containing compound metabolic process), GO:0006986 (response to unfolded protein), GO:0051252 (regulation of RNA metabolic process), GO:0031328 (positive regulation of cellular biosynthetic process), GO:2001141 (regulation of RNA biosynthetic process), GO:0034620 (cellular response to unfolded protein), GO:0006355 (regulation of DNA-templated transcription), GO:1902680 (positive regulation of RNA biosynthetic process), GO:0006357 (regulation of transcription by RNA polymerase II), GO:0045893 (positive regulation of DNA-templated transcription), GO:1903508 (positive regulation of nucleic acid-templated transcription), GO:1903506 (regulation of nucleic acid-templated transcription), GO:0045944 (positive regulation of transcription by RNA polymerase II)
Cellular Component (CC): GO:0005575 (cellular component), GO:0110165 (cellular anatomical entity), GO:0005622 (intracellular anatomical structure), GO:0043226 (organelle), GO:0031975 (envelope), GO:0016020 (membrane), GO:0031974 (membrane-enclosed lumen), GO:0048471 (perinuclear region of cytoplasm), GO:0005737 (cytoplasm), GO:0012505 (endomembrane system), GO:0005654 (nucleoplasm), GO:0031967 (organelle envelope), GO:0043233 (organelle lumen), GO:0005783 (endoplasmic reticulum), GO:0005635 (nuclear envelope), GO:0043229 (intracellular organelle), GO:0043227 (membrane-bounded organelle), GO:0043231 (intracellular membrane-bounded organelle), GO:0070013 (intracellular organelle lumen), GO:0031981 (nuclear lumen), GO:0005634 (nucleus)