results for glu 239 -- -- gln are consistent with measurements of activity , small angle x-ray scattering and sedimentation coefficient that indicate that mutations at this site shift the quaternary structure towards the r state [ ladjimi and kantrowitz ( 1988 ) , biochemistry 27 , 276-83 ; vachette and herve , cited by kantrowitz and lipscomb ( 1988 ) , science 241 , 669-674 ; newell and schachman ( 1988 ) , faseb j . 2 , a551 ] .
C0061472
glu
C0017797
gln