2020
The disordered N-terminus of HDAC6 is a microtubule-binding domain critical for efficient tubulin deacetylation
USTINOVA, Kseniya; Zora NOVAKOVA; Makoto SAITO; Marat MELESHIN; Jana MIKESOVA et al.Základní údaje
Originální název
The disordered N-terminus of HDAC6 is a microtubule-binding domain critical for efficient tubulin deacetylation
Autoři
USTINOVA, Kseniya; Zora NOVAKOVA; Makoto SAITO; Marat MELESHIN; Jana MIKESOVA; Zsofia KUTIL; Petra BARANOVA; Barbora HAVLINOVA; Mike SCHUTKOWSKI; Patrick MATTHIAS a Cyril BARINKA
Vydání
Journal of Biological Chemistry, Bethesda, Amer. Soc. Biochem. Mol. Biol. 2020, 0021-9258
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10608 Biochemistry and molecular biology
Stát vydavatele
Nizozemské království
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 5.157
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:90043/20:00139203
Organizační jednotka
CIISB
UT WoS
EID Scopus
Klíčová slova anglicky
structure-function; substrate specificity; protein-protein interaction; microtubule-associated protein (MAP); tubulin; intrinsically disordered protein; histone deacetylase 6 (HDAC6); protein motif
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 28. 3. 2025 16:39, Mgr. Eva Dubská
Anotace
V originále
Histone deacetylase 6 (HDAC6) is a multidomain cytosolic enzyme having tubulin deacetylase activity that has been unequivocally assigned to the second of the tandem catalytic domains. However, virtually no information exists on the contribution of other HDAC6 domains on tubulin recognition. Here, using recombinant protein expression, site-directed mutagenesis, fluorimetric and biochemical assays, microscale thermophoresis, and total internal reflection fluorescence microscopy, we identified the N-terminal, disordered region of HDAC6 as a microtubule-binding domain and functionally characterized it to the single-molecule level. We show that the microtubule-binding motif spans two positively charged patches comprising residues Lys-32 to Lys-58. We found that HDAC6-microtubule interactions are entirely independent of the catalytic domains and are mediated by ionic interactions with the negatively charged microtubule surface. Importantly, a crosstalk between the microtubule-binding domain and the deacetylase domain was critical for recognition and efficient deacetylation of free tubulin dimers both in vitro and in vivo. Overall, our results reveal that recognition of substrates by HDAC6 is more complex than previously appreciated and that domains outside the tandem catalytic core are essential for proficient substrate deacetylation.
Návaznosti
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