Protein acid type WSJ Crossword Clue
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The most common and recent 5-letter answer for "Protein acid type" is AMINO.
The clue refers to a type of acid that is a building block of proteins. Amino acids are organic compounds that combine to form proteins, making 'amino' the correct answer.
This clue was last seen in the WSJ Crossword on September 23, 2025.
Amino refers to a group of organic compounds that form the building blocks of proteins.
___ acid (protein building block), NH2 group, Important acid type, Question from someone seeking reassurance, Kind of protein-building acid
The clue “Protein acid type” is a classic crossword staple, frequently appearing in puzzles like the WSJ crossword. For the puzzle dated September 23 2025, the definitive 5-letter answer is: AMINO.
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