Patent ID: 8003611

Claim:
A biomaterial composite, which comprises a polypeptide and a calcium phosphate compound, said polypeptide comprising the units of Formulas (I) to (III): [—(OC)—(CH 2 ) m —CO) p -(Pro-Y-Gly) n -] a (I) [—(OC)—(CH 2 ) m —CO) q -( z ) r -] b (II) [—HN—R—NH—] c (III) wherein; m is an integer of 1 to 18; p and q are each independently 0 or 1; a is an integer of 1 to 10,000 and b and c are each independently an integer of 0 to 10,000; each of Ys is independently Pro, Hyp or a group of the formula: wherein R′ is H or C1-6 alkyl and X is a divalent group; n is an integer of 1 to 20; Z is an amino acid residue or peptide chain consisting of 1 to 10 amino acid(s); r is an integer of 1 to 20; R is a straight or branched chain alkylene group of 2 to 12 carbon atoms; the molar ratio of a and b (a/b) is 100/0 to 30/70; when p is 1 and q is 0, c equals to a; when p is 0 and q is 1, c equals to b; when p is 1 and q is 1, c equals to a+b; and when p is 0 and q is 0, c is 0 in which at least one of Ys is a group of the formula: