4IXU 4IXU 4ixu Crystal structure of human Arginase-2 complexed with inhibitor 11d: {(5R)-5-amino-5-carboxy-5-[(3-endo)-8-(3,4-dichlorobenzyl)-8-azabicyclo[3.2.1]oct-3-yl]pentyl}(trihydroxy)borate(1-) 4IXU-noatom