Crystallization of Saccharomyces cerevisiae aminopeptidase 1, the major cargo protein of the Cvt pathway
- Department of Structural Biology, Graduate School of Pharmaceutical Sciences, Hokkaido University, N-12, W-6, Kita-ku, Sapporo 060-0812 (Japan)
- Division of Molecular Cell Biology, National Institute for Basic Biology, 38 Nishigonaka, Myodaiji, Okazaki 444-8585 (Japan)
Aminopeptidase 1, a cargo protein in the cytosol-to-vacuole targeting (Cvt) pathway, was expressed, purified and crystallized in two crystal forms. The vacuole hydrolase aminopeptidase 1 (Ape1) is a cargo protein transported to the vacuole by the cytosol-to-vacuole targeting (Cvt) pathway during conditions of growth and by autophagy during conditions of starvation. After transport to the vacuole, Ape1 is processed into mature Ape1 (mApe1). mApe1 has been expressed, purified and crystallized in two crystal forms. Form I belongs to space group P2{sub 1}, with unit-cell parameters a = 120.6, b = 219.5, c = 133.1 Å, β = 116.5°. Form II belongs to space group R3, with unit-cell parameters a = 141.2, c = 349.4 Å. Diffraction data were collected from these crystals to a resolution of 2.5 Å for form I and 1.83 Å for form II. Self-rotation functions and the volume-to-weight ratio values suggest that forms I and II contain 12 and four mApe1 molecules per asymmetric unit, respectively, and that mApe1 exists as a tetrahedral dodecamer in both crystal forms.
- OSTI ID:
- 22360272
- Journal Information:
- Acta Crystallographica. Section F, Vol. 63, Issue Pt 3; Other Information: PMCID: PMC2330172; PMID: 17329814; PUBLISHER-ID: bo5014; OAI: oai:pubmedcentral.nih.gov:2330172; Copyright (c) International Union of Crystallography 2007; Country of input: International Atomic Energy Agency (IAEA); ISSN 1744-3091
- Country of Publication:
- United Kingdom
- Language:
- English
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