[problem] project of the present invention is that transparent and homogeneous hydrogel can be formed in wide pH ranges by providing one kind (sugar chain) polypeptide complex. I.e., the present invention provides a kind of (sugar chain) polypeptide complexes, the compound is, it is characterized in that, the polypeptide includes amino acid sequence, substantially by 8 to 34 amino acid residues and wherein Polar Amides acid residue and non-polar amino acid residue are alternatively arranged for it, and the method for one or more sugar chains and polypeptide.
