Structure of native porcine pancreatic elastase at 1.65 A resolutions.Meyer, E., Cole, G., Radhakrishnan, R., Epp, O.
(1988) Acta Crystallogr.,Sect.B 44: 26-38
- PubMed: 3271103
- Also Cited By: 1E34, 1E35, 1E36, 1E37, 1E38, 1H9L, 1HAX, 1HAY, 1HAZ, 1HB0, 1QIX, 1QNJ, 6EST, 7EST
- PubMed Abstract:
- Crystal Structures of the Complex of Porcine Pancreatic Elastase with Two Valine-Derived Benzoxazinone Inhibitors
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- Amino-Acid Sequence of Porcine Pancreatic Elastase and its Homologies with Other Serine Proteinases
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(1970) Nature 225: 802
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(1988) Biochemistry 27: 725
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(1970) Nature 225: 806
- Structure of the Product Complex of Acetyl-Ala-Pro-Ala with Porcine Pancreatic Elastase at 1.65 Angstroms Resolution
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- Stereospecific Reaction of 3-Methoxy-4-Chloro-7-Amino-Isocoumarin with Crystalline Porcine Pancreatic Elastase
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(1973) Biochem.Biophys.Res.Commun. 53: 944
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Clore, G.M.,Gronenborn, A.M.,Carlson, G.,Meyer, E.F.
(1986) J.Mol.Biol. 190: 259
- The Atomic Structure of Crystalline Porcine Pancreatic Elastase at 2.5 Angstroms Resolution. Comparisons with the Structure of Alpha-Chymotrypsin
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- Three Dimensional Structure of Tosyl-Elastase
Shotton, D.M.,Watson, H.C.
(1970) Nature 225: 811
The structure of native porcine pancreatic elastase in 70% methanol has been refined using film data to 1.65 A resolution, R = 0.169. A total of 134 molecules of water (but no methanol) has been refined. This structure, because of its native state an ...
The structure of native porcine pancreatic elastase in 70% methanol has been refined using film data to 1.65 A resolution, R = 0.169. A total of 134 molecules of water (but no methanol) has been refined. This structure, because of its native state and modestly high resolution, serves as the basis for comparison with other elastase structures complexed with natural or synthetic ligands. Internal structured water occupies distinct regions. Two regions (IW1 and IW7) suggest a mechanism for equalizing 'hydrostatic pressure' related to ligand binding and release. A third region (IW4) forms part of a hydrogen-bonding network linking the catalytic Ser 195 O gamma with a remote (13.4 A) surface of the enzyme. A comparison with the structures of all known serine proteases reveals that a linkage of Ser O gamma to remote surface is conserved in all cases, suggesting that the accepted catalytic mechanism of serine proteases needs to be re-evaluated. One possible mechanism for base catalysis of Ser O gamma H proton extraction is presented.
Department of Biochemistry and Biophysics, Texas A&M University, College Station 77843-2128.