Binding of DOA kinase to specific loci in polytene chromosomes of Drosophila melanogaster

Michaela Kováčiková, Ivan Raška, Anton Mateášik, Bruce A. Chase, Robert Farkaš

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Objectives. Highly conserved LAMMER kinases belong to the family of dual-specific proteins phosphorylating enzymes with homologues in yeast, plants, Drosophila and mammals. SR proteins, several members of which are components of the spliceosomal complex and have been implicated in the control of alternative splicing, were identified among first targets of LAMMER kinases. The Drosophila locus Darkener of apricot (Doa) encodes best known representative of the LAMMER family of kinases, which is essential for embryonic and postembryonic development, neurogenesis, differentiation of photoreceptors, and sex determination. Methods. DOA kinase was detected on squash preparations of polythene chromosomes using anti-DOA antibodies in combination with indirect immunofluorescence. Results. Here we provide evidence for active chromosomal presence of DOA kinase in Drosophila salivary glands, and increased abundance of DOA at eleven specific loci of polythene chromosomes where it can be involved in on-site control of splicing process. Many genes that may be found at the loci with increased abundance fall into three major groups based on their known functions. First group contains genes that code for transcription factors, RNA-binding proteins or chromatin modifying enzymes. Second group of genes encode proteins which belong to proteasomal components, lipid enzymes, stress-sensitive ER proteins and caspases which are all early/proximal components of apoptotic process. Third group of genes comprises of tRNA coding genes or genes of tRNA synthases (ligases), all involved in protein synthesis. Some of the encoded protein products are confirmed or potential substrates of DOA kinase activity. Conclusions. Data indicate that genes encoding proteins involved in closely related pathways are concentrated at certain loci to achieve more efficient regulation of their expression as exemplified from distribution of DOA protein on Drosophila polythene chromosomes.

Original languageEnglish (US)
Pages (from-to)21-27
Number of pages7
JournalEndocrine Regulations
Volume40
Issue number1
StatePublished - Nov 27 2006

Fingerprint

Polytene Chromosomes
Drosophila melanogaster
Phosphotransferases
Polyethylene
Proteins
Drosophila
Chromosomes
Genes
RNA Ligase (ATP)
Enzymes
Drosophila Proteins
Cucurbita
Sex Differentiation
RNA-Binding Proteins
Neurogenesis
Alternative Splicing
Indirect Fluorescent Antibody Technique
Caspases
Transfer RNA
Salivary Glands

Keywords

  • Chromatin on-site modification
  • DOA
  • Drosophila
  • Dual
  • LAMMER kinase
  • Polytene chromosomes
  • Specific protein kinases
  • Subcellular localisation

ASJC Scopus subject areas

  • Endocrinology, Diabetes and Metabolism
  • Endocrinology

Cite this

Kováčiková, M., Raška, I., Mateášik, A., Chase, B. A., & Farkaš, R. (2006). Binding of DOA kinase to specific loci in polytene chromosomes of Drosophila melanogaster. Endocrine Regulations, 40(1), 21-27.

Binding of DOA kinase to specific loci in polytene chromosomes of Drosophila melanogaster. / Kováčiková, Michaela; Raška, Ivan; Mateášik, Anton; Chase, Bruce A.; Farkaš, Robert.

In: Endocrine Regulations, Vol. 40, No. 1, 27.11.2006, p. 21-27.

Research output: Contribution to journalArticle

Kováčiková, M, Raška, I, Mateášik, A, Chase, BA & Farkaš, R 2006, 'Binding of DOA kinase to specific loci in polytene chromosomes of Drosophila melanogaster', Endocrine Regulations, vol. 40, no. 1, pp. 21-27.
Kováčiková M, Raška I, Mateášik A, Chase BA, Farkaš R. Binding of DOA kinase to specific loci in polytene chromosomes of Drosophila melanogaster. Endocrine Regulations. 2006 Nov 27;40(1):21-27.
Kováčiková, Michaela ; Raška, Ivan ; Mateášik, Anton ; Chase, Bruce A. ; Farkaš, Robert. / Binding of DOA kinase to specific loci in polytene chromosomes of Drosophila melanogaster. In: Endocrine Regulations. 2006 ; Vol. 40, No. 1. pp. 21-27.
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