peptide/lib/src/allowNeutralLoss.js

Peptide

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.allowNeutralLoss = allowNeutralLoss;
/**
 * Add neutral loss on natural amino acids
 * @param {*} mf
 * @returns
 */
function allowNeutralLoss(mf) {
    if (Array.isArray(mf)) {
        for (let i = 0; i < mf.length; i++) {
            mf[i] = allowOneNeutralLoss(mf[i]);
        }
        return mf;
    }
    else {
        return allowOneNeutralLoss(mf);
    }
}
function allowOneNeutralLoss(mf) {
    mf = mf.replaceAll(/(Ser|Thr|Asp|Glu)(?!\()/g, '$1(H-2O-1)0-1');
    mf = mf.replaceAll(/(Arg|Lys|Asn|Gln)(?!\()/g, '$1(N-1H-3)0-1');
    return mf;
}
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