Adenylate kinases (AKs) are ubiquitous phosphotransferases that contribute to homeostasis of adenine nucleotide composition in cells. Six AK isoforms were found in vertebrates. We report that soluble AK isoform 1 is expressed in the cytosol of bovine retina consistently devoid of rod outer segments. Immunoblotting analysis with a polyclonal antibody raised against soluble adenylate kinase and subsequent sequencing of eluted peptide by matrixassisted laser desorption/ionization–time-of-flight mass spectrometry allowed enzyme isolation by joining purification methods to two-dimensional electrophoresis. In this study, we found that cytosolic adenylate kinase isoform 1 is expressed in bovine retina. Cytoplasmic AK1 would physiologically contribute to retinal energy metabolism.
Expression of Adenylate Kinase 1 in bovine retinal cytosol
RAVERA, SILVIA;CALZIA, DANIELA;PANFOLI, ISABELLA;M. Bruschi;MORELLI, ALESSANDRO;PEPE, ISIDORO
2007-01-01
Abstract
Adenylate kinases (AKs) are ubiquitous phosphotransferases that contribute to homeostasis of adenine nucleotide composition in cells. Six AK isoforms were found in vertebrates. We report that soluble AK isoform 1 is expressed in the cytosol of bovine retina consistently devoid of rod outer segments. Immunoblotting analysis with a polyclonal antibody raised against soluble adenylate kinase and subsequent sequencing of eluted peptide by matrixassisted laser desorption/ionization–time-of-flight mass spectrometry allowed enzyme isolation by joining purification methods to two-dimensional electrophoresis. In this study, we found that cytosolic adenylate kinase isoform 1 is expressed in bovine retina. Cytoplasmic AK1 would physiologically contribute to retinal energy metabolism.
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