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We are deeply saddened by the passing of Amos Bairoch (1957–2025), the creator of PROSITE. We wish to dedicate our latest paper, published shortly before his death, to him. He will always be a source of inspiration to us.
Our deepest condolences go out to his family and friends, and to all those who had the privilege of working with him. Rest in peace, Amos. Your work will live on long after you are gone.
Amos Bairoch

PROSITE documentation PDOC51804
Zinc finger C2HC LYAR-type profile


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PURL: https://purl.expasy.org/prosite/documentation/PDOC51804

Description

Zinc finger (ZF) proteins are a large family of metalloproteins that utilize zinc for structural purposes. Zinc coordinates to a combination of cysteine thiol and histidine imidazole residues within the ZF polypetide sequence resulting in a folded and functional protein. Ly-1 antibody reactive clone (Lyar), which is known to be expressed abundantly in the testis, encodes a nucleolar protein that contain a LYAR-type C2HC zinc finger motif and three nuclear localization signals. It is a nucleolar protein abundantly expressed in spermatocytes and spermatids, but not sperm. LYAR forms a complex with the nucleolin, which is one of the most abundant proteins in the nucleolus [1,2,3].

The profile we developed covers the entire LYAR-type C2HC zinc finger.

Last update:

June 2016 / First entry.

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Technical section

PROSITE method (with tools and information) covered by this documentation:

ZF_C2HC_LYAR, PS51804; Zinc finger C2HC LYAR-type profile  (MATRIX)


References

1AuthorsSu L. Hershberger R.J. Weissman I.L.
TitleLYAR, a novel nucleolar protein with zinc finger DNA-binding motifs, is involved in cell growth regulation.
SourceGenes Dev. 7:735-748(1993).
PubMed ID8491376

2AuthorsLee B. Jin S. Choi H. Kwon J.T. Kim J. Jeong J. Kwon Y.-I. Cho C.
TitleExpression and function of the testis-predominant protein LYAR in mice.
SourceMol. Cells 35:54-60(2013).
PubMed ID23212345
DOI10.1007/s10059-013-2271-3

3AuthorsYonezawa K. Sugihara Y. Oshima K. Matsuda T. Nadano D.
TitleLyar, a cell growth-regulating zinc finger protein, was identified to be associated with cytoplasmic ribosomes in male germ and cancer cells.
SourceMol. Cell. Biochem. 395:221-229(2014).
PubMed ID24990247
DOI10.1007/s11010-014-2128-x



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