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Cited by 188

The DOI matches its Crossref record; 3 of the 3 references it cites were found in a registry or an index.

The solution structure of the Josephin domain of ataxin-3: Structural determinants for molecular recognition

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Nicastro, Giuseppe, Menon, Rajesh P., Masino, Laura, Knowles, Philip P., McDonald, Neil Q., Pastore, Annalisa·2005·Proceedings of the National Academy of Sciences

Abstract

The Josephin domain plays an important role in the cellular functions of ataxin-3, the protein responsible for the neurodegenerative Machado–Joseph disease. We have determined the solution structure of Josephin and shown that it belongs to the family of papain-like cysteine proteases, sharing the highest degree of structural similarity with bacterial staphopain. A currently unique structural feature of Josephin is a flexible helical hairpin formed by a 32-residue insertion, which could determine substrate specificity. By using the Josephin structure and the availability of NMR chemical shift assignments, we have mapped the enzyme active site by using the typical cysteine protease inhibitors, transepoxysuccinyl- l -eucylamido-4-guanidino-butane (E-64) and [ l -3-trans-(propylcarbamyl)oxirane-2-carbonyl]- l -isoleucyl- l -proline (CA-074). We also demonstrate that the specific interaction of Josephin with the ubiquitin-like domain of the ubiquitin- and proteasome-binding factor HHR23B involves complementary exposed hydrophobic surfaces. The structural similarity with other deubiquitinating enzymes suggests a model for the proteolytic enzymatic activity of ataxin-3.

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Metadata

Authors
Nicastro, G., Menon, R. P., Masino, L., Knowles, P. P., McDonald, N. Q., & Pastore, A.
Venue
Proceedings of the National Academy of Sciences
Published
2005-07-14
Volume
102
Issue
30
Pages
10493-10498
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2004879226
Cited by
188
References
3
FWCI
4.64
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: The solution structure of the Josephin domain of ataxin-3: Structural determinants for molecular recognition. https://app.cochat.ai/papers/10.1073/pnas.0501732102
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Nicastro, G., Menon, R. P., Masino, L., Knowles, P. P., McDonald, N. Q., & Pastore, A. (2005). The solution structure of the Josephin domain of ataxin-3: Structural determinants for molecular recognition. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0501732102

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