Rma1, a novel type of RING finger protein conserved from Arabidopsis to human, is a membrane-bound ubiquitin ligase

Abstract excerpt

Rma1 is a protein with a RING finger motif and a C-terminal membrane-anchoring domain and is well conserved among higher eukaryotes. We show that fusion proteins between maltose binding protein (MBP) and human or Arabidopsis Rma1 are polyubiquitinated, when incubated with the rabbit reticulocyte or the wheat germ lysate, respectively. The polyubiquitination of MBP-Rma1 has been reconstituted by incubation with...

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