title: Primary sequence, tissue specificity and expression of the Na+,K(+)-ATPase alpha 1 subunit in the European eel (Anguilla anguilla).
abstract: The entire cDNA nucleotide sequence of the Na+,K(+)-ATPase alpha 1 isoform was cloned from the gills of the European eel (Anguilla anguilla) by a PCR based method. The amino acid sequence translated from the sequence shared 89.4 and 85.6% homology respectively with previously published Na+,K(+)-ATPase alpha subunit sequences from elasmobranch (Torpedo californica) and teleost (Catostomus commersoni) fish. The size of Na+,K(+)-ATPase alpha 1 mRNA transcripts in eel tissues was demonstrated to be 3.5 kb, except in the ovary where a 3.7 kb transcript existed. Na+,K(+)-ATPase alpha 1 mRNA was present at some level in all tissues investigated with the exception of cardiac and skeletal muscle where no Na+,K(+)-ATPase alpha 1 mRNA was detectable. The level of branchial Na+,K(+)-ATPase alpha 1 mRNA increased after the adaptation of freshwater eels to normal or double concentration seawater.
authors.affiliation: School of Biological and Medical Sciences, University of St Andrews, UK.
authors.forename: C P
authors.initials: CP
authors.lastname: Cutler
authors.forename: I L
authors.initials: IL
authors.lastname: Sanders
authors.forename: N
authors.initials: N
authors.lastname: Hazon
authors.forename: G
authors.initials: G
authors.lastname: Cramb
mesh_terms: D000222:Adaptation, Physiological; D000595:Amino Acid Sequence; D000811:Anguilla / Q000502:physiology*; D000818:Animals; D001483:Base Sequence; D015152:Blotting, Northern; D003001:Cloning, Molecular; D015342:DNA Probes; D018076:DNA, Complementary; D004848:Epithelium / Q000737:chemistry / Q000201:enzymology; D005060:Europe; D005260:Female; D015870:Gene Expression; D005880:Gills / Q000737:chemistry / Q000201:enzymology / Q000502:physiology; D007527:Isoenzymes / Q000737:chemistry / Q000235:genetics / Q000378:metabolism; D008969:Molecular Sequence Data; D016133:Polymerase Chain Reaction; D014176:Protein Biosynthesis; D012333:RNA, Messenger / Q000032:analysis / Q000737:chemistry / Q000378:metabolism; D016415:Sequence Alignment; D017386:Sequence Homology, Amino Acid; D000254:Sodium-Potassium-Exchanging ATPase / Q000737:chemistry* / Q000235:genetics / Q000378:metabolism*
chemical_list: D015342:DNA Probes; D018076:DNA, Complementary; D007527:Isoenzymes; D012333:RNA, Messenger; D000254:Sodium-Potassium-Exchanging ATPase