What is the answer to the USA Today Crossword clue "Amino ___ (protein building block)" from July 22, 2026?

Crossword clue

“Amino ___ (protein building block)”

This clue appeared as 1-Across in the USA Today Crossword on Wednesday, July 22, 2026. The answer has 4 letters.

Answer · 4 lettersFirst appearance

ACID

Letters4

Starts withA

Ends withD

Vowels2

Where this clue has appeared

USA Today Crossword
Jul 22, 20264 letters→

About this clue

The clue “Amino ___ (protein building block)” ran in the USA Today Crossword on July 22, 2026 as 1-Across. Its answer is a 4-letter word that starts with A and ends with D.

See every answer from the puzzle on the USA Today Crossword page for July 22, 2026, or learn how clues like this work in our guide to crossword clue types.

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FAQ

What is the answer to the “Amino ___ (protein building block)” clue?+

The answer is ACID (4 letters), from the USA Today Crossword of July 22, 2026.

Where has this clue appeared?+

We have seen it 1 time in the USA Today Crossword.

How do I find other USA Today Crossword answers?+

Open the full list of answers for July 22, 2026, or browse every date on the USA Today Crossword hub.