1A95 | A:; B:; C:; D: | XPRTASE FROM E. COLI COMPLEXED WITH MG:CPRPP AND GUANINE |
1A96 | A:; B:; C:; D: | XPRTASE FROM E. COLI WITH BOUND CPRPP AND XANTHINE |
1A97 | A:; B:; C:; D: | XPRTASE FROM E. COLI COMPLEXED WITH GMP |
1A98 | A:; B: | XPRTASE FROM E. COLI COMPLEXED WITH GMP |
1NUL | A:; B: | XPRTASE FROM E. COLI |