Identification of the interaction domains between α- and γ-subunits of GlcNAc-1-phosphotransferase
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Identification of the interaction domains between α- and γ-subunits of GlcNAc-1-phosphotransferase. / Velho, Renata Voltolini; De Pace, Raffaella; Tidow, Henning; Braulke, Thomas; Pohl, Sandra.
in: FEBS LETT, Jahrgang 590, Nr. 23, 12.2016, S. 4287-4295.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - Identification of the interaction domains between α- and γ-subunits of GlcNAc-1-phosphotransferase
AU - Velho, Renata Voltolini
AU - De Pace, Raffaella
AU - Tidow, Henning
AU - Braulke, Thomas
AU - Pohl, Sandra
N1 - © 2016 Federation of European Biochemical Societies.
PY - 2016/12
Y1 - 2016/12
N2 - The disease-associated hexameric N-acetylglucosamine (GlcNAc)-1-phosphotransferase complex (α2 β2 γ2 ) catalyzes the formation of mannose 6-phosphate residues on lysosomal enzymes required for efficient targeting to lysosomes. Using pull-down experiments and mutant subunits, we identified a potential loop-like region in the α-subunits comprising residues 535-588 and 645-698 involved in the binding to γ-subunits. The interaction is independent of the mannose 6-phosphate receptor homology domain but requires the N-terminal unstructured part of the γ-subunit consisting of residues 26-69. These studies provide new insights into structural requirements for the assembly of the GlcNAc-1-phosphotransferase complex, and the functions of distinct domains of the α- and γ-subunits.
AB - The disease-associated hexameric N-acetylglucosamine (GlcNAc)-1-phosphotransferase complex (α2 β2 γ2 ) catalyzes the formation of mannose 6-phosphate residues on lysosomal enzymes required for efficient targeting to lysosomes. Using pull-down experiments and mutant subunits, we identified a potential loop-like region in the α-subunits comprising residues 535-588 and 645-698 involved in the binding to γ-subunits. The interaction is independent of the mannose 6-phosphate receptor homology domain but requires the N-terminal unstructured part of the γ-subunit consisting of residues 26-69. These studies provide new insights into structural requirements for the assembly of the GlcNAc-1-phosphotransferase complex, and the functions of distinct domains of the α- and γ-subunits.
KW - Acetylglucosamine
KW - Amino Acid Sequence
KW - Animals
KW - HEK293 Cells
KW - Humans
KW - Mutation
KW - Phenotype
KW - Phosphotransferases
KW - Protein Domains
KW - Protein Subunits
KW - Letter
U2 - 10.1002/1873-3468.12456
DO - 10.1002/1873-3468.12456
M3 - SCORING: Journal article
C2 - 27736005
VL - 590
SP - 4287
EP - 4295
JO - FEBS LETT
JF - FEBS LETT
SN - 0014-5793
IS - 23
ER -