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| Title: | | STRUCTURE OF THE PURR-GUANINE-PURF OPERATOR COMPLEX | |
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| Molecular Description: | PURINE REPRESSOR/DNA COMPLEX + GUANINE |
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| Structural Features: | RH DOUBLE HELIX, OVERHANGING BASE |
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| Nucleic Acid Sequence: |
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| Chain | B: | | (DA) (DA) (DC) (DG) (DA) (DA) (DA) (DA) (DC) (DG) (DT) (DT) (DT) (DT) (DC) (DG) (DT) |
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| Protein Sequence: |
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| Primary Citation: | Schumacher, M.A., Glasfeld, A., Zalkin, H., Brennan, R.G.
The X-ray structure of the PurR-guanine-purF operator complex reveals the contributions of complementary electrostatic surfaces and a water-mediated hydrogen bond to corepressor specificity and binding affinity.
J.Biol.Chem.
, 272,
pp. 22648 - 22653, 1997.
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| Experimental Information: | X-RAY DIFFRACTION |
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| Space Group: |
C
2
2
21
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| Cell Constants: |
| a = 175.990 | b = 95.080 | c = 81.510 | (Ångstroms) |
 = 90.00 |  = 90.00 |  = 90.00 | (degrees) |
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| Refinement: | The structure was refined using the TNT program.
The R value is
17.6
for 21013 reflections
in the resolution of 2.600
with Fobs > 1.000 sigma(Fobs).
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