Summary

Name KLHL25
Full Name Kelch-like protein 25
Synonyms Ectoderm-neural cortex protein 2, ENC-2 | ENC2
Primary ID Q9H0H3
Links - -
Type protein
Relations 4
Function Substrate-specific adapter of a BCR (BTB-CUL3-RBX1) E3 ubiquitin ligase complex involved in various processes, such as translation homeostasis and lipid synthesis (PubMed:22578813, PubMed:27664236, PubMed:34491895). The BCR(KLHL25) ubiquitin ligase complex acts by mediating ubiquitination of hypophosphorylated EIF4EBP1 (4E-BP1): ubiquitination and subsequent degradation of hypophosphorylated EIF4EBP1 (4E-BP1) probably serves as a homeostatic mechanism to maintain translation and prevent eIF4E inhibition when eIF4E levels are low (PubMed:22578813). The BCR(KLHL25) complex does not target EIF4EBP1 (4E-BP1) when it is hyperphosphorylated or associated with eIF4E (PubMed:22578813). The BCR(KLHL25) complex also acts as a regulator of lipid synthesis by mediating ubiquitination and degradation of ACLY, thereby inhibiting lipid synthesis (PubMed:27664236, PubMed:34491895). BCR(KLHL25)-mediated degradation of ACLY promotes fatty acid oxidation and is required for differentiation of inducible regulatory T (iTreg) cells (PubMed:34491895). {ECO:0000269|PubMed:22578813, ECO:0000269|PubMed:27664236, ECO:0000269|PubMed:34491895}.

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Relations

Regulator Mechanism target score
+ down-regulates quantity by destabilization img/direct_inhibition.png binding EIF4EBP1 0.419
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png binding Cullin 3-RBX1-Skp1 0.508
Publications: 2 Organism: Homo Sapiens
+ down-regulates quantity by destabilization img/direct_inhibition.png binding ACLY 0.351
Publications: 1 Organism: Homo Sapiens