Proline molfidget with rotatable bonds

20 Amino Acid Molfidgets Collectionhttps://makerworld.com/collections/8398687 This is a molecular model of proline, created using molfidget. Proline is a non-essential amino acid that is unique because of its cyclic structure, which gives it special properties. It plays a major role in the structure and stability of proteins, especially collagen, the most abundant protein in the human body. Proline helps maintain skin, joints, and connective tissue, and contributes to wound healing. In this model, all single bonds are rotatable. Some carbon atoms are pre-connected, and you can complete the assembly by manually attaching the remaining atoms.