---
name: "amino-acid-composition"
section: "1"
platform: "linux"
package: "ncbi-entrez-direct"
version: "24.0.20250523+dfsg-1+b1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/amino-acid-composition"
---

# amino-acid-composition(1)

report amino acid composition

## NAME

amino-acid-composition - report amino acid composition

## SYNOPSIS

**amino-acid-composition**

## DESCRIPTION

**amino-acid-composition** reports on the amino acid composition of protein sequences (one case-insensitive letter per residue) it reads from standard input. For each line of input, it writes on standard output a 26-line tab-delimited report using three-letter symbols, in the form

- **Ala**

  *n*

- **Arg**

  *n*

- **Asp**

  *n*

- ...

  ...

- **Val**

  *n*

- **Xle**

  *n*

- **Xxx**

  *n*