Citrus Sinensis ID: 023501

Annotation transfered from Closely Related SWISS-PROT Entries

Annotation	Function Description	Confidence Level	Reference Protein
E3 ubiquitin-protein ligase CHIP	Has E3 ubiquitin-protein ligase activity and may target misfolded substrates towards proteasomal degradation. Regulates the activity of some serine/threonine-protein phosphatases by E3 ubiquitin-protein ligase activity. Required for responses to biotic and abiotic stresses such as auxin, abscisic acid (ABA), low and high temperature and darkness, probably through the activation of serine/threonine-protein phosphatase and the subsequent modification of the plasma membrane composition. Regulates the chloroplastic Clp proteolytic activity in response to stresses. Ubiquitylates FtsH1, a component of the chloroplast FtsH protease, and affects protein degradation in chloroplasts. Mediates plastid precursor degradation to prevent cytosolic precursor accumulation, together with the molecular chaperone HSC70-4. Mediates ubiquitination of transit peptides and thereby led to their degradation through the ubiquitin-proteasome system.	probable	Q9SRS9
STIP1 homology and U box-containing protein 1	E3 ubiquitin-protein ligase which targets misfolded chaperone substrates towards proteasomal degradation. Ubiquitinates NOS1 in concert with Hsp70 and Hsp40. Mediates polyubiquitination of DNA polymerase beta (POLB), thereby playing a role in base-excision repair: catalyzes polyubiquitination by amplifying the HUWE1/ARF-BP1-dependent monoubiquitination and leading to POLB-degradation by the proteasome. Mediates polyubiquitination of CYP3A4. May ubiquitinate EPHA2 and regulate the receptor stability and activity through proteasomal degradation.	probable	Q5ZHY5
E3 ubiquitin-protein ligase CHIP	E3 ubiquitin-protein ligase which targets misfolded chaperone substrates towards proteasomal degradation. Collaborates with ATXN3 in the degradation of misfolded chaperone substrates: ATXN3 restricting the length of ubiquitin chain attached to STUB1/CHIP substrates and preventing further chain extension. Ubiquitinates NOS1 in concert with Hsp70 and Hsp40. Modulates the activity of several chaperone complexes, including Hsp70, Hsc70 and Hsp90. Mediates transfer of non-canonical short ubiquitin chains to HSPA8 that have no effect on HSPA8 degradation. Mediates polyubiquitination of DNA polymerase beta (POLB) at 'Lys-41', 'Lys-61' and 'Lys-81', thereby playing a role in base-excision repair: catalyzes polyubiquitination by amplifying the HUWE1/ARF-BP1-dependent monoubiquitination and leading to POLB-degradation by the proteasome. Mediates polyubiquitination of CYP3A4. Ubiquitinates EPHA2 and may regulate the receptor stability and activity through proteasomal degradation.	probable	Q9UNE7

Prediction of Enzyme Commission Number

No confident prediction of EC number!

Spatial Structural Prediction