sentences:  The laboratory of Ulrich Hartl at the Max Planck Institute for Biochemistry in Martinsried, Germany, has identified an archaeal homolog of prefoldin that also functions as a molecular chaperone.Eukaryotic prefoldin likely evolved from archaea, as it is not present (or has been lost) from bacteria.Prefoldin is a hetero hexameric protein consisting of two α subunits and four β subunits.