|Application ||WB, IHC|
|Reactivity||Human, Mouse, Rat|
|Calculated MW||89679 Da|
|Other Names||Cullin-1, CUL-1, CUL1|
|Target/Specificity||A synthetic peptide corresponding to residues on the C-terminus of human CUL1 was used as an immunogen.|
|Format||50 mM Tris-Glycine (pH 7.4), 0.15 M NaCl, 40% Glycerol, 0.01% sodium azide and 0.05% BSA.|
|Storage||Maintain refrigerated at 2-8°C for up to 6 months. For long term storage store at -20°C in small aliquots to prevent freeze-thaw cycles.|
|Precautions||CUL1 Antibody is for research use only and not for use in diagnostic or therapeutic procedures.|
|Function||Core component of multiple cullin-RING-based SCF (SKP1- CUL1-F-box protein) E3 ubiquitin-protein ligase complexes, which mediate the ubiquitination of proteins involved in cell cycle progression, signal transduction and transcription. In the SCF complex, serves as a rigid scaffold that organizes the SKP1-F-box protein and RBX1 subunits. May contribute to catalysis through positioning of the substrate and the ubiquitin-conjugating enzyme. The E3 ubiquitin-protein ligase activity of the complex is dependent on the neddylation of the cullin subunit and exchange of the substrate recognition component is mediated by TIP120A/CAND1. The functional specificity of the SCF complex depends on the F-box protein as substrate recognition component. SCF(BTRC) and SCF(FBXW11) direct ubiquitination of CTNNB1 and participate in Wnt signaling. SCF(FBXW11) directs ubiquitination of phosphorylated NFKBIA. SCF(BTRC) directs ubiquitination of NFKBIB, NFKBIE, ATF4, SMAD3, SMAD4, CDC25A, FBXO5 and probably NFKB2. SCF(SKP2) directs ubiquitination of phosphorylated CDKN1B/p27kip and is involved in regulation of G1/S transition. SCF(SKP2) directs ubiquitination of ORC1, CDT1, RBL2, ELF4, CDKN1A, RAG2, FOXO1A, and probably MYC and TAL1. SCF(FBXW7) directs ubiquitination of cyclin E, NOTCH1 released notch intracellular domain (NICD), and probably PSEN1. SCF(FBXW2) directs ubiquitination of GCM1. SCF(FBXO32) directs ubiquitination of MYOD1. SCF(FBXO7) directs ubiquitination of BIRC2 and DLGAP5. SCF(FBXO33) directs ubiquitination of YBX1. SCF(FBXO1) directs ubiquitination of BCL6 and DTL but does not seem to direct ubiquitination of TP53. SCF(BTRC) mediates the ubiquitination of NFKBIA at 'Lys-21' and 'Lys-22'; the degradation frees the associated NFKB1-RELA dimer to translocate into the nucleus and to activate transcription. SCF(CCNF) directs ubiquitination of CCP110. SCF(FBXL3) and SCF(FBXL21) direct ubiquitination of CRY1 and CRY2. SCF(FBXO9) direct ubiquitination of TTI1 and TELO2. SCF(FBXO10) directs ubiquitination of BCL2.|
|Tissue Location||Expressed in lung fibroblasts.|
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Provided below are standard protocols that you may find useful for product applications.
Cullin proteins assemble a large number of RING E3 ubiquitin ligases and regulate various physiological processes (1). It has been shown that the SKP1, CUL1, F-box (SCF) containing pathway, although similarly used by the mammalian CUL1, is not shared by other cullin members. This implies that most cullins may use a SKP1/F-box-independent pathway to facilitate protein degradation (2). The majority of CUL1 has been found in a complex with CAND1 and ROC1, independent of SKP1 and F-box protein SKP2. Data suggests that CAND1 regulates the formation of the SCF complex, and its dissociation from CUL1 is coupled with the incorporation of F-box proteins into the SCF complex, causing their destabilization (3).
1. Liu J, et al. Mol Cell. 10(6):1511-8, 2002
2. Michel JJ, et al. Cell Growth Differ. 9(6):435-49, 1998
3. Zheng J, et al. Mol Cell. 10(6):1519-26, 2002
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