Side chain lle chil distribution geometry x angle here might indicate error in structure 0389 150180210240270300330380 x1 lle chi2 distribution X2 isoleucine www.fCcc.edu/research/labs/dunbrack/confanalysis.htmlSide chain geometry O N χ1 χ2 isoleucine χ angle here might www.fccc.edu/research/labs/dunbrack/confanalysis.html indicate error in structure