Definition

A type of amino acid that contains sulfur and is important for making proteins in the body.

Example

Cysteine is essential for the formation of proteins and enzymes in our body.

Conversation

I just learned that cysteine is really important for our bodies.

Really? I had no idea it was that significant.

Yeah, it's an amino acid that's found in most proteins.

That's interesting! I should probably pay more attention to my protein intake.

Synonyms & Antonyms

Root Explanation

Cysteine is derived from the Greek word "kystis" (meaning bladder or sac) and the suffix "-ine" (used to form names of substances). The word refers to an amino acid that was first isolated from a bladder stone, hence the connection to its name.

Memory Tip

Think of the Greek word for bladder ('kystis') to remember that cysteine is related to a substance first found in bladder stones.

Visually Confused Words