Amino Acid Composition Calculator

Amino Acid Composition Calculator: Calculate Protein Sequence Composition

Calculate the amino acid composition of a protein sequence. Input your sequence using standard single-letter amino acid codes (A, C, D, E, F, G, H, I, K, L, M, N, P, Q, R, S, T, V, W, Y) via the keypad or keyboard, then click Calculate to get the amino acid counts and percentages.

How It Works

Enter your amino acid sequence using the keypad or keyboard, then click “Calculate” to see the amino acid composition. The calculator displays the total sequence length, amino acid counts, and percentages in a table, along with calculation steps. Use the “Share” button to copy the calculator’s URL or the “Embed” button to copy an iframe code for embedding on another website.

Amino Acid Composition Calculator

Amino Acid Sequence

Result

Total Sequence Length:

Steps

About Amino Acid Composition Calculator

The Amino Acid Composition Calculator computes the composition of a protein sequence, providing the count and percentage of each amino acid (A, C, D, E, F, G, H, I, K, L, M, N, P, Q, R, S, T, V, W, Y). It’s a simple tool for protein sequence analysis in molecular biology research.

How to Use

  • Enter your amino acid sequence using the keypad buttons (A, C, D, E, F, G, H, I, K, L, M, N, P, Q, R, S, T, V, W, Y) or keyboard (case-insensitive).
  • Click the “Calculate” button to compute the amino acid composition. The page will scroll to the result.
  • Click the “Clear” button to reset the sequence input and results.
  • Click the “Share” button to copy the calculator’s URL to your clipboard for sharing.
  • Click the “Embed” button to copy an iframe code for embedding the calculator on another website.
  • The total sequence length, amino acid counts, and percentages will be displayed in a table, along with detailed step-by-step calculations below.

Formulas

Amino Acid Count:

Count of Amino Acid = Number of occurrences of the amino acid in the sequence

Amino Acid Percentage:

Percentage = (Count of Amino Acid / Total Sequence Length) × 100

Important Notes

  • The sequence must contain only valid amino acid single-letter codes: A, C, D, E, F, G, H, I, K, L, M, N, P, Q, R, S, T, V, W, Y (case-insensitive). Invalid characters or empty sequences will trigger an error.
  • The “Share” and “Embed” buttons require a browser that supports the Clipboard API.