Claims
- 1. A crystal comprising a polypeptide selected from:
(a) a glycosylated, human β-secretase polypeptide characterized by structural coordinates comprising a root mean square deviation of conserved residue backbone atoms of less than about 1.5 Å when superimposed on backbone atoms described by structural coordinates of Table 2; (b) a glycosylated, human β-secretase polypeptide complexed with 4(OM-99-2) characterized by structural coordinates comprising a root mean square deviation of conserved residue backbone atoms of less than about 1.5 Å when superimposed on backbone atoms described by structural coordinates of Table 3; and (c) a glycosylated, human β-secretase polypeptide which comprises a pyramidal structure.
- 2. A crystal of claim 1 wherein the root mean square deviation is less than about 1.0 Å.
- 3. A crystal of claim 2 wherein the root mean square deviation is less than about 0.5 Å.
- 4. A crystal of claim 3 wherein the root mean square deviation is less than about 0.1 Å.
- 5. A crystal of claim I comprising a polypeptide selected from:
(a) a glycosylated, human, β-secretase polypeptide comprising the amino acid sequence set forth in SEQ ID NO: 1; (b) a glycosylated, human, β-secretase polypeptide comprising the amino acid sequence set forth in SEQ ID NO: 5 complexed with 5(OM-99-2); and (c) a glycosylated, human β-secretase polypeptide comprising the amino acid sequence set forth in SEQ ID NO: 4 which crystal is characterized by a pyramidal structure.
- 6. A crystal of claim 1 comprising a polypeptide selected from:
(a) a glycosylated, human β-secretase polypeptide comprising the amino acid sequence set forth in SEQ ID NO: 1 characterized by structural coordinates of Table 2; and (b) a glycosylated, human β-secretase polypeptide comprising the amino acid sequence set forth in SEQ ID NO: 5 complexed with 6(OM-99-2) characterized by structural coordinates of Table 3.
- 7. A crystal of claim 1 which crystal is able to proteolytically cleave a peptide comprising the amino acid sequence KSEVNLDAEFRK (SEQ ID NO: 3).
- 8. A crystal of claim 1, wherein the β-secretase polypeptide comprises an active site in an open configuration.
- 9. A crystal of claim I which effectively diffracts x-rays for determination of structural coordinates of the polypeptide to a resolution greater than about 5 Å.
- 10. A computer for producing a three-dimensional representation of BACE characterized by the structural coordinates of Table 2 or BACE complexed with
- 11. The computer of claim 10 wherein the root mean square deviation between the homologue and the structure coordinates set forth in Table 2 or 3 is less than about 1 Å.
- 12. The computer of claim 11 wherein the root mean square deviation between the homologue and the structure coordinates set forth in Table 2 or 3 is less than about 0.5 Å.
- 13. The computer of claim 12 wherein the root mean square deviation between the homologue and the structure coordinates set forth in Table 2 or 3 is less than about 0.1 Å.
- 14. The computer of claim 10 wherein the display unit is displaying the three dimensional representation.
- 15. A method for preparing crystalline, glycosylated, human β-secretase polypeptide, comprising subjecting a composition comprising a proBACE polypeptide (SEQ ID NO: 2) to a process selected from a microbatch method and a vapor diffusion method wherein said composition is at about pH 4.0.
- 16. The method of claim 15, wherein the proBACE polypeptide is first purified by a process selected from anion exchange chromatography, nickel chelate chromatography and gel filtration chromatography.
- 17. The method of claim 15, wherein the composition further comprises a member selected from a protein stabilizing agent, a salt and a precipitant.
- 18. A method for obtaining structural information concerning a molecule of unknown structure, comprising generating x-ray diffraction data from a crystallized form of the molecule, and applying crystallographic phases derived from at least a portion of structure coordinates set forth in Table 2 or 3 to said x-ray diffraction pattern to generate a three-dimensional electron density map of at least a portion of the molecule.
Parent Case Info
[0001] This application claims the benefit of U.S. Provisional Patent Application No. 60/367,937, filed Mar. 27, 2002, now pending, which is herein incorporated by reference in its entirety.
Provisional Applications (1)
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Number |
Date |
Country |
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60367937 |
Mar 2002 |
US |