Table 2. Interaction of Rhp23 with ubiquitin-encoding proteins.

Clone	Gene designation	Protein accession no.	Putative function	Human/budding yeast homolog	Reference
Rbp1H9	ubi1	CAB16209	Ub fusion protein	UbBa/Ubi1	This study
Rbp4E9	ubi2	CAB55853	Ub fusion protein	UbBa/Ubi2	This study
Rbp2C7	ubi3	CAB11297	Ub fusion protein	UbBa/Ubi3	This study
Rbp5E3	dph1	CAA93239	Ub-like protein	Chap1/Dsk2	(43)

The ubi1 and ubi2 genes encode identical proteins.

^aThe first 76 amino acids are nearly identical (98% identity) to human ubiquitin B (see also Fig. 6B).