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Cited by 263

The DOI matches its Crossref record; 37 of the 37 references it cites were found in a registry or an index.

Interaction of hHR23 with S5a

Open access
Hiyama, Hideki, Yokoi, Masayuki, Masutani, Chikahide, Sugasawa, Kaoru, Maekawa, Takafumi, Tanaka, Keiji, Hoeijmakers, Jan H.J., Hanaoka, Fumio·1999·Journal of Biological Chemistry

Abstract

hHR23B is one of two human homologs of the Saccharomyces cerevisiae nucleotide excision repair (NER) gene product RAD23 and a component of a protein complex that specifically complements the NER defect of xeroderma pigmentosum group C (XP-C) cell extracts in vitro. Although a small proportion of hHR23B is tightly complexed with the XP-C responsible gene product, XPC protein, a vast majority exists as an XPC-free form, indicating that hHR23B has additional functions other than NER in vivo. Here we demonstrate that the human NER factor hHR23B as well as another human homolog of RAD23, hHR23A, interact specifically with S5a, a subunit of the human 26 S proteasome using the yeast two-hybrid system. Furthermore, hHR23 proteins were detected with S5a at the position where 26 S proteasome sediments in glycerol gradient centrifugation of HeLa S100 extracts. Intriguingly, hHR23B showed the inhibitory effect on the degradation of (125)I-lysozyme in the rabbit reticulocyte lysate. hHR23 proteins thus appear to associate with 26 S proteasome in vivo. From co-precipitation experiments using several series of deletion mutants, we defined the domains in hHR23B and S5a that mediate this interaction. From these results, we propose that part of hHR23 proteins are involved in the proteolytic pathway in cells.

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Metadata

Authors
Hiyama, H., Yokoi, M., Masutani, C., Sugasawa, K., Maekawa, T., Tanaka, K., Hoeijmakers, J. H. J., & Hanaoka, F.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
1999-09
Volume
274
Issue
39
Pages
28019-28025
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2080625914
Cited by
263
References
37
FWCI
5.33
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: Interaction of hHR23 with S5a. https://app.cochat.ai/papers/10.1074/jbc.274.39.28019
The paper
Hiyama, H., Yokoi, M., Masutani, C., Sugasawa, K., Maekawa, T., Tanaka, K., Hoeijmakers, J. H. J., & Hanaoka, F. (1999). Interaction of hHR23 with S5a. Journal of Biological Chemistry. https://doi.org/10.1074/jbc.274.39.28019

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