zap;
background white;
load alanine.pdb;
wireframe 25;
select atomno=1,atomno=13;connect double modifyorcreate;
select all;
spacefill 20%;
select all;
colour bonds [220,220,220];
reset;center {-2.5279999 -0.020500004 0.13300002}; rotate z -55.01; rotate y 106.93; rotate z -45.79;
select none;