{
    "name": "tn93",
    "title": "The Tamura-Nei (1993) nucleotide rate matrix",
    "deprecated-synonyms": ["TN","TrN","tn","TN93","trn"],
    "result_type": "RevCTMC[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[kappaPur,kappaPyr,SModel.Frequency.frequencies_from_dict[a,pi],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": "pi",
            "arg_type": "List[Pair[String,Double]]",
            "default_value": "~dirichlet_on[letters[@a],1]",
	    "description": "Letter frequencies"
        },
        {
            "arg_name": "a",
            "arg_type": "a",
	    "default_value": "getAlphabet",
            "description": "The alphabet"
        }
    ],
    "description":"The Tamura-Nei model.",
    "extract": "all"
}
