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Hägele, S; Behnam, B; Borter, E; Wolfe, J; Paasch, U; Lukashev, D; Sitkovsky, M; Wenger, R H; Katschinski, D M (2006). TSGA10 prevents nuclear localization of the hypoxia-inducible factor (HIF)-1alpha. FEBS Letters, 580(15):3731-3738.

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The hypoxia-inducible factor (HIF)-1 is a transcriptional regulator of genes involved in oxygen homeostasis. We previously described testis-specific isoforms of HIF-1alpha (mHIF-1alphaI.1 and hHIF-1alphaTe). Using mHIF-1alpha exon I.1 knock-out mice we confirmed the specific expression of mHIF-1alphaI.1 in the sperm tail. A protein-protein interaction between HIF-1alpha and the testis specific gene antigen 10 (TSGA10) was identified by yeast two-hybrid screening. TSGA10 is expressed in testis but also in other organs and malignant tissues. Immunofluorescence analysis indicated that the C-terminal part of TSGA10 accumulates in the midpiece of spermatozoa, where it co-localizes with HIF-1alpha. HIF-1alpha nuclear localization and HIF-1 transcriptional activity were significantly affected by overexpressed TSGA10.


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Additional indexing

Item Type:Journal Article, refereed
Communities & Collections:04 Faculty of Medicine > Institute of Physiology
07 Faculty of Science > Institute of Physiology
Dewey Decimal Classification:570 Life sciences; biology
Deposited On:11 Feb 2008 12:22
Last Modified:05 Apr 2016 12:18
Publisher DOI:10.1016/j.febslet.2006.05.058
PubMed ID:16777103

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