The Membrane-associated Protein-serine/threonine Kinase from Sulfolobus Solfataricus is a Glycoprotein
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Treatment of a sodium dodecyl sulfate-polyacrylamide gel with periodic acid-Schiff (PAS) stain or blotting with Galanthus nivalis agglutinin revealed the presence of several glycosylated polypeptides in a partially purified detergent extract of the membrane fraction of Sulfolobus solfataricus. One of the glycoproteins comigrated with the membrane-associated protein-serine/threonine kinase from S. solfataricus, which had been radiolabeled by autophosphorylation with [(32)P]ATP in vitro. Treatment with a chemical deglycosylating agent, trifluoromethanesulfonic acid, abolished PAS staining and reduced the M(r) of the protein kinase from approximately 67,000 to approximately 62,000. Protein kinase activity also adhered to, and could be eluted from, agarose beads containing bound G. nivalis agglutinin. Glycosylation of the protein kinase implies that at least a portion of this integral membrane protein resides on the external surface of the cell membrane.
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The biology of thermoacidophilic archaea from the order Sulfolobales.
Lewis A, Recalde A, Brasen C, Counts J, Nussbaum P, Bost J FEMS Microbiol Rev. 2021; 45(4).
PMID: 33476388 PMC: 8557808. DOI: 10.1093/femsre/fuaa063.
Hoffmann L, Schummer A, Reimann J, Haurat M, Wilson A, Beeby M Microbiologyopen. 2016; 6(1).
PMID: 27771939 PMC: 5300886. DOI: 10.1002/mbo3.414.
Protein phosphorylation and its role in archaeal signal transduction.
Esser D, Hoffmann L, Pham T, Brasen C, Qiu W, Wright P FEMS Microbiol Rev. 2016; 40(5):625-47.
PMID: 27476079 PMC: 5007285. DOI: 10.1093/femsre/fuw020.
Brasen C, Esser D, Rauch B, Siebers B Microbiol Mol Biol Rev. 2014; 78(1):89-175.
PMID: 24600042 PMC: 3957730. DOI: 10.1128/MMBR.00041-13.