A substantially purified glycoprotein, comprising a neutral active soluble hyaluronidase polypeptide and at least one N-linked sugar moiety, wherein:
- the N-linked sugar moiety is covalently attached to an asparagine residue of the polypeptide;
- an asparagine residue is selected from amino acids 82, 166, 235, 254, 368, 393 or 490 as set forth in SEQ ID NO:
- 1;
- the glycoprotein contains residues 36-364 of SEQ ID NO:1;
- and
- the glycoprotein contains a contiguous sequence of amino acid residues of SEQ ID NO:1, but it is C-terminally truncated so that it does not contain all or a portion of the GPI anchor, whereby it is soluble and neutral active.