SPSB4

SPSB4 (SplA/Ryanodine Receptor Domain And SOCS Box Containing 4) is a Protein Coding gene. Among its related pathways are Innate Immune System and Class I MHC mediated antigen processing and presentation. An important paralog of this gene is SPSB1.

Full Name

SplA/Ryanodine Receptor Domain And SOCS Box Containing 4

Function

Substrate recognition component of a SCF-like ECS (Elongin BC-CUL2/5-SOCS-box protein) E3 ubiquitin-protein ligase complex which mediates the ubiquitination and subsequent proteasomal degradation of target proteins (PubMed:21199876, PubMed:15601820).
Negatively regulates nitric oxide (NO) production and limits cellular toxicity in activated macrophages by mediating the ubiquitination and proteasomal degradation of NOS2 (PubMed:21199876).
Acts as a bridge which links NOS2 with the ECS E3 ubiquitin ligase complex components ELOC and CUL5 (PubMed:21199876).
Diminishes EphB2-dependent cell repulsive responses by mediating the ubiquitination and degradation of EphB2/CTF2 (PubMed:28931592).
Regulates cellular clock function by mediating the ubiquitin/proteasome-dependent degradation of the circadian transcriptional repressor NR1D1 (PubMed:26392558).

Biological Process

Biological Process intracellular signal transductionIEA:InterPro
Biological Process positive regulation of protein polyubiquitinationManual Assertion Based On ExperimentIDA:UniProtKB
Biological Process proteasome-mediated ubiquitin-dependent protein catabolic processManual Assertion Based On ExperimentIBA:GO_Central
Biological Process protein ubiquitinationManual Assertion Based On ExperimentIDA:UniProtKB
Biological Process regulation of circadian rhythmManual Assertion Based On ExperimentIMP:UniProtKB
Biological Process rhythmic processIEA:UniProtKB-KW
Biological Process ubiquitin-dependent protein catabolic processManual Assertion Based On ExperimentIDA:UniProtKB

Cellular Location

Cytoplasm
Cytoplasm, cytosol
Exhibits a diffuse cytosolic localization.