Runs through proteins that are in a quanted protein table, extracts
    and maps their information based on the quantfields list input.
    Map is a dict with protein_accessions as keys.

def get_quantmap(features, acc_col, quantfields):
    """Runs through proteins that are in a quanted protein table, extracts
    and maps their information based on the quantfields list input.
    Map is a dict with protein_accessions as keys."""
    qmap = {}
    for feature in features:
        feat_acc = feature.pop(acc_col)
        qmap[feat_acc] = {qf: feature[qf] for qf in quantfields}
    return qmap