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Literature summary for 7.2.2.13 extracted from

  • Rodacker, V.; Toustrup-Jensen, M.; Vilsen, B.
    Mutations Phe785Leu and Thr618Met in Na+,K+-ATPase, associated with familial rapid-onset dystonia parkinsonism, interfere with Na+ interaction by distinct mechanisms (2006), J. Biol. Chem., 281, 18539-18548.
    View publication on PubMed

Application

Application Comment Organism
medicine analysis of mutations F785L and T618M associated with familial rapid-onset dystonia parkinsonism Homo sapiens

Crystallization (Commentary)

Crystallization (Comment) Organism
strucutural modeling of enzyme. Residue F785 participates in a hydrophobic network between three transmembrane segments. Residue T618 is located in the cytoplasmic part of the molecule near the catalyitc site Homo sapiens

Protein Variants

Protein Variants Comment Organism
F785L mutation associated with familial rapid-onset dystonia parkinsonism, leads to functionally altered, but active, Na+K+-pumps with reduced apparent affinity for cytoplasmic Na+. Defect in the interaction of the E1 form of enzyme with Na+, and the E1-E2 equilibrium is not displaced. K+ interaction at the external activating sites of E2P phosphoenzyme is normal. The affinity for ouabain is significantly reduced Homo sapiens
F785L/L786F aromatic function of F785 is critical for Na+ and ouabain binding Homo sapiens
F785Y aromatic function of F785 is critical for Na+ and ouabain binding Homo sapiens
T618M mutation associated with familial rapid-onset dystonia parkinsonism, leads to functionally altered, but active, Na+K+-pumps with reduced apparent affinity for cytoplasmic Na+. The Na+-affinity is reduced because of displacement of the conformational equilibrium in favor of the K+-occluded E2 form. K+ interaction at the external activating sites of E2P phosphoenzyme is normal Homo sapiens

Localization

Localization Comment Organism GeneOntology No. Textmining
membrane
-
Homo sapiens 16020
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Organism

Organism UniProt Comment Textmining
Homo sapiens
-
patients with familial rapid-onset dystonia parkinsonism
-