Abstract:
:Protein kinase CK2 of Candida albicans has been purified to near homogeneity by a procedure which involves chromatography on DEAE-cellulose, phosphocellulose, Q-Sepharose, and heparin-agarose. The purified enzyme has the characteristic properties of animal and yeast CK2, i.e., it utilizes ATP as well as GTP as phosphate donor, phosphorylates serine and threonine residues on casein, is inhibited by low concentrations of heparin, and is stimulated by NaCl and polycationic compounds such as polylysine, spermine, and spermidine. The native form of the enzyme exhibits a molecular mass of 159 kDa, and SDS-PAGE analysis indicates that it is composed of four polypeptides with relative molecular masses of 44, 39, 37 and 36 kDa. The 39- and 37-kDa polypeptides were identified as distinct catalytic subunits alpha and alpha' on the basis of in situ phosphorylation assays and immunological recognition with heterologous antibodies. The purified kinase undergoes autophosphorylation on the 44- and 36-kDa polypeptides, a characteristic of the beta subunits from other species. Antibodies raised against the beta subunit of Drosophila melanogaster and human CK2 crossreact only with the 36-kDa polypeptide. The 44-kDa polypeptide was identified as an unusually large beta' subunit by Western blotting with an antibody raised against the beta' subunit of Saccharomyces cerevisiae. All these data suggest that C. albicans CK2 has an alpha alpha' beta beta' heterotetrameric composition similar to that found in S. cerevisiae.
journal_name
Arch Biochem Biophysjournal_title
Archives of biochemistry and biophysicsauthors
Walz K,Pardo PS,Passeron Sdoi
10.1006/abbi.1997.9923subject
Has Abstractpub_date
1997-04-15 00:00:00pages
347-54issue
2eissn
0003-9861issn
1096-0384pii
S0003-9861(97)99923-9journal_volume
340pub_type
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journal_title:Archives of biochemistry and biophysics
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journal_title:Archives of biochemistry and biophysics
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journal_title:Archives of biochemistry and biophysics
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更新日期:2008-02-15 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1996.0037
更新日期:1996-01-15 00:00:00
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pub_type: 杂志文章
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更新日期:2018-08-01 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(88)90360-8
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
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更新日期:2015-03-15 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
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更新日期:1991-02-15 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.2000.1755
更新日期:2000-05-01 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(86)90607-7
更新日期:1986-02-01 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1996.0504
更新日期:1996-11-15 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2005.02.031
更新日期:2005-05-01 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
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更新日期:1998-05-15 00:00:00