Primary sequence of a putative non-ATPase subunit of the 26S proteasome from Entamoeba histolytica is similar to the human and yeast S2 subunit

The cDNA coding for a non-ATPase S2 subunit of the 26S proteasome from Entamoeba histolytica was cloned from a cDNA library (EhS2). The open reading frame has 2529 bp and the deduced amino acid sequence encodes a protein with a calculated molecular mass of 92,000 Da. EhS2 has 29–35% identity with the three other known S2 subunit sequences of yeasts and humans. Received: 23 August 1998 / Accepted: 2 November 1998