SKP1 - S-phase kinase-associated protein 1 - human protein (Function)
Home Recent activites arrow-down favorite My favorites arrow-down favorite My labels arrow-down Downloads
Back to ...  
Publication View

SKP1 »  S-phase kinase-associated protein 1
Protein also known as:  RNA polymerase II elongation factor-like protein.
Gene name:  SKP1
Family name: SKP1
Entry whose protein(s) existence is based on evidence at protein level
extend overview
1 85 2


 show evidences
Essential component of the SCF (SKP1-CUL1-F-box protein) ubiquitin ligase complex, which mediates the ubiquitination of proteins involved in cell cycle progression, signal transduction and transcription. In the SCF complex, serves as an adapter that links the F-box protein to CUL1. 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(FBXO11) 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) direct ubiquitination of BCL2.  
  • CuratedUniProtKB
GO molecular function 
Protein bindingdefinition[GO:0005515]  
  • IPIIntAct
  • IPIUniProtKB
Ubiquitin-protein ligase activitydefinition[GO:0004842]  
  • IDAUniProtKB
GO biological process 
Histone H2A monoubiquitinationdefinition[GO:0035518]  
  • IDAUniProtKB
Protein ubiquitinationdefinition[GO:0016567]  
  • IDAUniProtKB
SCF-dependent proteasomal ubiquitin-dependent protein catabolic processdefinition[GO:0031146]  
  • IDAUniProtKB
This protein is involved in the following pathway
According to KEGG, this protein belongs to the following pathways:
Cell cycle  hsa04110+6500  
Circadian rhythm - mammal  hsa04710+6500  
Herpes simplex infection  hsa05168+6500  
Oocyte meiosis  hsa04114+6500  
Protein processing in endoplasmic reticulum  hsa04141+6500  
TGF-beta signaling pathway  hsa04350+6500  
Ubiquitin mediated proteolysis  hsa04120+6500  
Wnt signaling pathway  hsa04310+6500  
According to Reactome, this protein belongs to the following pathways:
Cell Cycle  REACT_115566  
Circadian Clock  REACT_24941  
Disease  REACT_116125  
Immune System  REACT_6900  
Signal Transduction  REACT_111102  


Biological process 
Ubl conjugation pathway  definition   [KW-0833]
Technical term 
Reference proteome  definition   [KW-1185]

Further external links

GeneWiki: SKP1A
GenomeRNAi: 6500
PRO: PR:P63208