Abstract
Bruton's Tyrosine Kinase (BTK) is a cytoplasmic protein tyrosine kinase with a fundamental role in B-lymphocyte development and activation. The nucleocytoplasmic shuttling of BTK is specifically modulated by the Ankyrin Repeat Domain 54 (ANKRD54) protein and the interaction is known to be exclusively SH3-dependent. To identify the spectrum of the ANKRD54 SH3-interactome, we applied phage-display screening of a library containing all the 296 human SH3 domains. The BTK-SH3 domain was the prime interactor. Quantitative western blotting analysis demonstrated the accuracy of the screening procedure. Revealing the spectrum and specificity of ANKRD54-interactome is a critical step toward functional analysis in cells and tissues.
MeSH terms
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Agammaglobulinaemia Tyrosine Kinase
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Animals
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B-Lymphocytes / cytology
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COS Cells
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Cell Line, Tumor
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Chlorocebus aethiops
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HEK293 Cells
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Humans
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Mutation / genetics
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Nuclear Proteins / genetics
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Nuclear Proteins / metabolism*
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Peptide Library
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Protein Binding / genetics
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Protein-Tyrosine Kinases / genetics
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Protein-Tyrosine Kinases / metabolism*
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Signal Transduction
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src Homology Domains / genetics
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src Homology Domains / physiology*
Substances
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ANKRD54 protein, human
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Nuclear Proteins
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Peptide Library
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Protein-Tyrosine Kinases
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Agammaglobulinaemia Tyrosine Kinase
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BTK protein, human
Grants and funding
MOG holds a Ph.D. scholarship from Södertörn University-College, Sweden. DKM maintains a postdoctoral-fellowship from MoHE in the Kurdistan-Regional Government, Iraq. The project was supported by a grant from the Swedish Cancer Society.