Amino Acid Lookup for Raycast

Look up amino acids by one-letter code, three-letter code or full name — as you type, calculator-style.

You type	You get
Trp	W · Tryptophan
w	Trp · Tryptophan
glut	Glutamine (Q, Gln), Glutamic acid (E, Glu), Glx (Z)
MKTAYIAK	Met-Lys-Thr-Ala-Tyr-Ile-Ala-Lys
Met-Lys-Thr / MetLysThr / met lys thr	MKT

Each residue also shows side-chain class, molecular weight and DNA codons. Sequences show length and average mass. Covers the 20 standard amino acids, selenocysteine (U/Sec), pyrrolysine (O/Pyl), ambiguity codes (B, Z, J, X) and stop (*/Ter).

Colors

Amino acids are colored with the Clustal X scheme by default. Switch to Taylor in Raycast Settings → Extensions → Amino Acid Lookup, or with Change Color Scheme… in the ⌘K menu.

Keyboard

Key	Action
↵	Copy the notation you didn't type (e.g. type Trp → copies W)
⌘↵	Paste it into the frontmost app
⌘1 / ⌘3 / ⌘⌥C	Copy one-letter / three-letter / name
⌃C	Copy codons

Getting it closer to the built-in calculator

Raycast doesn't let extensions put results inline in the root search, but you can get close:

1. Alias or hotkey — Raycast Settings → Extensions → Amino Acid Lookup → Look Up Amino Acids → set an alias like aa. Then type aa, Tab, Trp.
2. Fallback command — In root search, type Trp, scroll to the bottom, ⌘K on "Look Up Amino Acids" → Add to Fallback Commands. Anything Raycast doesn't recognize can then be sent straight into the extension with the text pre-filled.