Below you can find the Linus pauling found the structure of keratin the main component of nails & this human body part Jeopardy Words Answer. The answer to Linus pauling found the structure of keratin the main component of nails & this human body part has 4 letters. This clue belongs to the Biology category and is part of Jeopardy Word Level 2580. If you scroll near the bottom you will find other clues and answers part of level 2580