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SAMM50 SAMM50 ERN1 ERN1 XBP1 XBP1 MBTPS2 MBTPS2 HM13 HM13 ATF6 ATF6 ATF6B ATF6B SREBF1 SREBF1 SREBF2 SREBF2 MBTPS1 MBTPS1 SCAP SCAP
"MBTPS2" - membrane-bound transcription factor peptidase, site 2 in Homo sapiens
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splice isoforms or post-translational modifications are collapsed, i.e. each node represents all the proteins produced by a single, protein-coding gene locus.
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protein of unknown 3D structure
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second shell of interactors
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Known Interactions
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Predicted Interactions
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MBTPS2membrane-bound transcription factor peptidase, site 2; Intramembrane proteolysis of sterol-regulatory element- binding proteins (SREBPs) within the first transmembrane segment thereby releasing the N-terminal segment with a portion of the transmembrane segment attached. Site-2 cleavage comes after site-1 cleavage which takes place in the lumenal loop (519 aa)    
Predicted Functional Partners:
ATF6
activating transcription factor 6; Transcription factor that acts during endoplasmic reticulum stress by activating unfolded protein response target genes. Binds DNA on the 5’-CCAC[GA]-3’half of the ER stress response element (ERSE) (5’-CCAAT-N(9)-CCAC[GA]-3’) and of ERSE II (5’-ATTGG-N-CCACG-3’). Binding to ERSE requires binding of NF-Y to ERSE. Could also be involved in activation of transcription by the serum response factor (670 aa)
          score_image score_image   0.989
MBTPS1
membrane-bound transcription factor peptidase, site 1; Catalyzes the first step in the proteolytic activation of the sterol regulatory element-binding proteins (SREBPs). Other known substrates are BDNF and ATF6. Cleaves after hydrophobic or small residues, provided that Arg or Lys is in position P4. Cleaves known substrates after Arg-Ser-Val-Leu (SERBP-2), Arg-His- Leu-Leu (ATF6), Arg-Gly-Leu-Thr (BDNF) and its own propeptide after Arg-Arg-Leu-Leu (1052 aa)
          score_image score_image   0.985
SREBF2
sterol regulatory element binding transcription factor 2; Transcriptional activator required for lipid homeostasis. Regulates transcription of the LDL receptor gene as well as the cholesterol and to a lesser degree the fatty acid synthesis pathway (By similarity). Binds the sterol regulatory element 1 (SRE-1) (5’-ATCACCCCAC-3’) found in the flanking region of the LDRL and HMG-CoA synthase genes (1141 aa)
          score_image score_image   0.977
SCAP
SREBF chaperone; Escort protein required for cholesterol as well as lipid homeostasis. Regulates export of the SCAP/SREBF complex from the ER upon low cholesterol. Formation of a ternary complex with INSIG at high sterol concentrations leads to masking of an ER-export signal in SCAP and retention of the complex in the ER. Low sterol concentrations trigger release of INSIG, a conformational change in the SSC domain of SCAP, unmasking of the ER export signal, recruitment into COPII-coated vesicles, transport to the Golgi complex, proteolytic cleavage of SREBF in the Golgi, release of the [...] (1279 aa)
          score_image score_image   0.974
SREBF1
sterol regulatory element binding transcription factor 1; Transcriptional activator required for lipid homeostasis. Regulates transcription of the LDL receptor gene as well as the fatty acid and to a lesser degree the cholesterol synthesis pathway (By similarity). Binds to the sterol regulatory element 1 (SRE-1) (5’-ATCACCCCAC-3’). Has dual sequence specificity binding to both an E-box motif (5’-ATCACGTGA-3’) and to SRE-1 (5’-ATCACCCCAC-3’) (1177 aa)
          score_image score_image   0.963
ATF6B
activating transcription factor 6 beta (703 aa)
        score_image   score_image   0.876
ERN1
endoplasmic reticulum to nucleus signaling 1; Senses unfolded proteins in the lumen of the endoplasmic reticulum via its N-terminal domain which leads to enzyme auto- activation. The active endoribonuclease domain splices XBP1 mRNA to generate a new C-terminus, converting it into a potent unfolded-protein response transcriptional activator and triggering growth arrest and apoptosis (977 aa)
            score_image   0.776
XBP1
X-box binding protein 1; Transcription factor essential for hepatocyte growth, the differentiation of plasma cells, the immunoglobulin secretion, and the unfolded protein response (UPR). Acts during endoplasmic reticulum stress (ER) by activating unfolded protein response (UPR) target genes via direct binding to the UPR element (UPRE). Binds DNA preferably to the CRE-like element 5’- GATGACGTG[TG]N(3)[AT]T-3’, and also to some TPA response elements (TRE). Binds to the HLA DR-alpha promoter. Binds to the Tax- responsive element (TRE) of HTLV-I (261 aa)
            score_image   0.760
SAMM50
sorting and assembly machinery component 50 homolog (S. cerevisiae); May be required for the assembly pathway of mitochondrial outer membrane proteins (By similarity) (469 aa)
score_image     score_image     score_image   0.745
HM13
histocompatibility (minor) 13 (426 aa)
            score_image   0.723
Your Current Organism:
Homo sapiens
NCBI taxonomy Id: 9606
Other names: H. sapiens, Homo, Homo sapiens, human, man
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