{
    "description": "The start position of the amino acid sequence on a given protein in the mutagenesis experiment", 
    "maxlen": 5, 
    "label": "Mutagenesis (Start Position)", 
    "record_type": "protein", 
    "path": "mutagenesis.start_pos", 
    "type": "int", 
    "order": 1000
}