Cortexa research tool·genomics·sequence_analyze

Sequence Count Residues

Count occurrences of a specific amino acid or nucleotide residue in a sequence. Accepts either a raw sequence string or a UniProt accession (fetches protein sequence from UniProt REST API). Reports count, fraction, percentage, and 1-based positions. Useful for cysteine counting (disulfide bond estimation), charged residue analysis, or nucleotide composition.

Livelast probed 2026-04-30 23:07Z· 95msCortexa

Status

The most recent probe succeeded. Safe to call from the agent today.

Last probed: 1d ago
Last success: 1d ago
Last latency: 95ms

Schema

JSON Schema the agent (or your API call) must match.

{
  "properties": {
    "operation": {
      "description": "Operation type",
      "enum": [
        "count_residues"
      ],
      "type": "string"
    },
    "residue": {
      "description": "Single character residue to count (e.g., 'C' for cysteine)",
      "type": "string"
    },
    "sequence": {
      "description": "Sequence string (DNA/RNA/protein). Optional if uniprot_id is provided.",
      "type": "string"
    },
    "uniprot_id": {
      "description": "UniProt accession to fetch sequence from (e.g., 'P00533' for EGFR). Optional if sequence is provided.",
      "type": "string"
    }
  },
  "required": [
    "operation",
    "residue"
  ],
  "type": "object"
}

Examples (1)

Default Sequence Count Residues call

public-safeinput

{
  "operation": "",
  "residue": ""
}

Expected response keys: success

Anonymous-safe example. Rate-limited; no sign-in required.

Identifiers

Catalog ID: tu_Sequence_count_residues
Tool name: Sequence_count_residues
Added: 2026-04-30 22:47Z
Tags: tooluniverse

Sequence Count Residues

Livelast probed 2026-04-30 23:07Z· 95msCortexa

Schema

JSON Schema the agent (or your API call) must match.

{ "properties": { "operation": { "description": "Operation type", "enum": [ "count_residues" ], "type": "string" }, "residue": { "description": "Single character residue to count (e.g., 'C' for cysteine)", "type": "string" }, "sequence": { "description": "Sequence string (DNA/RNA/protein). Optional if uniprot_id is provided.", "type": "string" }, "uniprot_id": { "description": "UniProt accession to fetch sequence from (e.g., 'P00533' for EGFR). Optional if sequence is provided.", "type": "string" } }, "required": [ "operation", "residue" ], "type": "object" }