https://sites.lifesci.ucla.edu/mbi-home/wp-content/uploads/sites/191/2015/08/UCL_MBI_logo_40.gif00galkin2https://sites.lifesci.ucla.edu/mbi-home/wp-content/uploads/sites/191/2015/08/UCL_MBI_logo_40.gifgalkin22015-09-18 10:30:102015-09-18 10:30:10Structure of the Bacillus anthracis Sortase A Enzyme Bound to Its Sorting Signal: a Flexible Amino-terminal Appendage Modulates Substrate Access.