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Literature summary for 7.2.2.19 extracted from

  • Duerr, K.L.; Tavraz, N.N.; Zimmermann, D.; Bamberg, E.; Friedrich, T.
    Characterization of Na,K-ATPase and H,K-ATPase enzymes with glycosylation-deficient beta-subunit variants by voltage-clamp fluorometry in Xenopus oocytes (2008), Biochemistry, 47, 4288-4297.
    View publication on PubMed

Cloned(Commentary)

Cloned (Comment) Organism
expression of the wild-type H,K-ATPase, alpha- and beta-subunits, and glycosylation-deficient Asn-to-Gln beta-mutants in Xenopus laevis oocytes Rattus norvegicus

Protein Variants

Protein Variants Comment Organism
additional information the absence of the huge N-linked oligosaccharide moiety on the beta-subunit in the glycosylation-deficient Asn-to-Gln beta-mutants does not affect alpha/beta co-assembly, plasma membrane delivery or functional activity of the holoenzyme, differences in neither the voltage-dependent E1P/E2P ratio nor the kinetics of the E1P/E2P transition between holoenzymes comprising glycosylated and glycosylation-deficient beta-subunits, overview Rattus norvegicus
N103Q site-directed mutagenesis, the mutation of the glycosylation site does not alter the enzyme's properties compared to the wild-type enzyme Rattus norvegicus
N130Q site-directed mutagenesis, the mutation of the glycosylation site does not alter the enzyme's properties compared to the wild-type enzyme Rattus norvegicus
N146Q site-directed mutagenesis, the mutation of the glycosylation site does not alter the enzyme's properties compared to the wild-type enzyme Rattus norvegicus
N161Q site-directed mutagenesis, the mutation of the glycosylation site does not alter the enzyme's properties compared to the wild-type enzyme Rattus norvegicus
N193Q site-directed mutagenesis, the mutation of the glycosylation site does not alter the enzyme's properties compared to the wild-type enzyme Rattus norvegicus
N225Q site-directed mutagenesis, the mutation of the glycosylation site does not alter the enzyme's properties compared to the wild-type enzyme Rattus norvegicus
N99Q site-directed mutagenesis, the mutation of the glycosylation site does not alter the enzyme's properties compared to the wild-type enzyme Rattus norvegicus

Inhibitors

Inhibitors Comment Organism Structure
Omeprazole
-
Rattus norvegicus
SCH 28080
-
Rattus norvegicus

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
additional information
-
additional information kinetics, wild-type and mutant enzymes, overview Rattus norvegicus

Localization

Localization Comment Organism GeneOntology No. Textmining
plasma membrane
-
Rattus norvegicus 5886
-

Metals/Ions

Metals/Ions Comment Organism Structure
Mg2+ required Rattus norvegicus

Organism

Organism UniProt Comment Textmining
Rattus norvegicus
-
-
-

Posttranslational Modification

Posttranslational Modification Comment Organism
glycoprotein N-linked glycosylation of beta-subunit, the absence of the huge N-linked oligosaccharide moiety on the beta-subunit in the glycosylation-deficient Asn-to-Gln beta-mutants does not affect alpha/beta co-assembly, plasma membrane delivery or functional activity of the holoenzyme, differences in neither the voltage-dependent E1P/E2P ratio nor the kinetics of the E1P/E2P transition between holoenzymes comprising glycosylated and glycosylation-deficient beta-subunits, overview Rattus norvegicus

Purification (Commentary)

Purification (Comment) Organism
recombinant wild-type and mutant enzymes partially from Xenopus laevis oocytes by plasma membrane preparation Rattus norvegicus

Source Tissue

Source Tissue Comment Organism Textmining

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
additional information
-
activity measurement by voltage-clamp fluorometry Rattus norvegicus

Subunits

Subunits Comment Organism
oligomer
-
Rattus norvegicus

Synonyms

Synonyms Comment Organism
H,K-ATPase
-
Rattus norvegicus

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
22
-
assay at room temperature Rattus norvegicus

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7.4
-
assay at Rattus norvegicus