comparison of the spectra of the apoproteins and copper-free , native , and reduced proteins suggests that zinc has a structural role in wgsod similar to that previously reported for besod [ lippard , s. j. , burger , a. r. , ugurbil , k. , pantoliano , m. w. , & valentine , j. s. ( 1977 ) biochemistry 16 , 1136 ] .
C0003601
apoproteins
C0033684
proteins