{
    "name": "tn93_sym",
    "title": "The Tamura-Nei (1993) nucleotide exchangability matrix",
    "result_type": "ExchangeModel[a]",
    "citation":{"type": "article",
		"title": "Estimation of the number of nucleotide substitutions in the control region of mitochondrial DNA in humans and chimpanzees.",
		"year": "1993",
		"author": [{"name": "Tamura, Koichiro"}, {"name": "Nei, Masatoshi"}],
		"journal": {"name": "Molecular biology and evolution", "volume": "10", "number": "3", "pages": "512--526"},
		"identifier": [{"type":"doi","id":"10.1093/oxfordjournals.molbev.a040023"}]
	       },
    "constraints": ["Nucleotides[a]"],
    "call": "SModel.Nucleotides.tn93_sym[kappaPur,kappaPyr,a]",
    "args": [
        {
            "arg_name": "kappaPur",
            "arg_type": "Double",
            "default_value": "~log_normal[log[2],0.25]",
            "description": "A<->G Transition\/transversion ratio"
        },
        {
            "arg_name": "kappaPyr",
            "arg_type": "Double",
            "default_value": "~log_normal[log[2],0.25]",
            "description": "C<->T Transition\/transversion ratio"
        },
        {
            "arg_name": "a",
            "arg_type": "a",
	    "default_value": "getAlphabet",
            "description": "The nucleotide alphabet (DNA or RNA)."
        }
    ],
    "description":"Symmetric exchangability matrix from Tamura-Nei",
    "extract": "all"
}
