Fig. 1.
Aligned amino and carboxyl terminal sequences for IDP enzymes. The amino terminus of yeast IDP1 was determined by amino acid sequence analysis [1]. Amino termini for yeast IDP2 and IDP3 [2–3] and for the non-mitochondrial form of IDPA [16] were assigned based on nucleotide sequences, the location of likely translation initiation methionine residues, and alignments with IDP1 [2–3].