Structural insights to heterodimeric cis-prenyltransferases through yeast dehydrodolichyl diphosphate synthase subunit Nus1.
Biochem Biophys Res Commun
; 515(4): 621-626, 2019 08 06.
Article
em En
| MEDLINE
| ID: mdl-31178134
ABSTRACT
The polyprenoid glycan carriers are produced by cis-prenyltransferases (cis-PTs), which function as heterodimers in metazoa and fungi or homodimers in bacteria, but both are found in plants, protista and archaea. Heterodimeric cis-PTs comprise catalytic and non-catalytic subunits while homodimeric enzymes contain two catalytic subunits. The non-catalytic subunits of cis-PT shows low sequence similarity to known cis-PTs and their structure information is of great interests. Here we report the crystal structure of Nus1, the non-catalytic subunit of cis-PT from Saccharomyces cerevisiae. We also investigate the heterodimer formation and active site conformation by constructing a homology model of Nus1 and its catalytic subunit. Nus1 does not contain an active site, but its C-terminus may participate in catalysis by interacting with the substrates bound to the catalytic subunit. These results provide important basis for further investigation of heterodimeric cis-PTs.
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01-internacional
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MEDLINE
Assunto principal:
Saccharomyces cerevisiae
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Alquil e Aril Transferases
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Proteínas de Saccharomyces cerevisiae
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Dimetilaliltranstransferase
Idioma:
En
Ano de publicação:
2019
Tipo de documento:
Article