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.

278 amino acids

MVTGVASAMAERLKEDGNNCFKKERFGAAIDAYTEAIALSPNVPAYWTNRALCHMKRKDWTKVEEDCRKAIQLVHNSVKAHYMLGLALLQKKEFTNGVKELQRALDLGRCSNPTGYMVEEIWEELSKAKYMEWELVSAMRSWELNSLKETCEAALNQQRALDMSRTEESSDEAYTAHTERLKALERVFKKAAEEDKPTEVPDYLCCNITLEIFRDPVISPSGVTYERAAILEHLKKVGKFDPITREKIDPANLVPNLAIKEAVAAYLEKHVWAYKMGC

31.7 kDa

(Note: Representative image - actual molecular weight may vary depending on tag type and expression method)

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