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The thermal triple helix coil transition of a blockpolymer with the sequence Boc‐(Gly‐Pro‐Pro) 5 ‐(Gly‐Pro‐Leu) 5 ‐(Gly‐Pro‐Pro) 5 ‐NH 2 was studied optically. The collagen model peptide was soluble in methanol/water (9:1, 3:1) and was found to form triple helical structures in this solvent system. The thermodynamic analysis of the transition curves showed that the sequence (Gly‐Pro‐Leu) 5 is part of the triple helix after renaturation of the blockpolymer.
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Roth et al. (1981) studied this question.
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