The content of RGD sequences per molecular weight of 10 kDa is 0.30 or more, the content of GFPGER sequences per molecular weight of 10 kDa is 0.15 or more, and the content of GVMGFP sequences per molecular weight of 10 kDa is 0.30. A polypeptide having an amino acid sequence that is less than 1, a scaffold composition containing the polypeptide, a composition for cartilage tissue repair, a composition for chondrocyte culture, and a composition for promoting production of glycosaminoglycan.分子量１０ｋＤａあたりのＲＧＤ配列の含有数が０．３０個以上であり、分子量１０ｋＤａあたりのＧＦＰＧＥＲ配列の含有数が０．１５個以上であり、分子量１０ｋＤａあたりのＧＶＭＧＦＰ配列の含有数が０．３０個未満であるアミノ酸配列を有するポリペプチド、並びに、当該ポリペプチドを含む足場組成物、軟骨組織修復用組成物、軟骨細胞培養用組成物及びグリコサミノグリカン産生促進用組成物。
