The primary sequence of the PFK‐1 inactivating zinc‐binding protein as deduced from cDNA sequencing Identity of the zinc‐binding protein with rat parathymosin

We have recently described the sequence of the Zn2+-binding domain (43 amino acid residues) of a newly detected Zn2+-binding protein which reversibly inactivates phosphofructokinase-1 in a Zn2+-dependent manner [(1986) J. Biol. Chem. 269, 5895-5900; (1988) Eur. J. Biochem. 177, 561-568]. Here, we describe the primary sequence of this protein based on a full-length cDNA. A sequence comparison reveals the identity of the Zn2+-binding protein with a protein called parathymosin-alpha.