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Low-resolution structure of the soluble domain GPAA1 (yGPAA1(70–247)) of the glycosylphosphatidylinositol transamidase subunit GPAA1 from Saccharomyces cerevisiae

The GPI (glycosylphosphatidylinositol) transamidase complex catalyses the attachment of GPI anchors to eukaryotic proteins in the lumen of ER (endoplasmic reticulum). The Saccharomyces cerevisiae GPI transamidase complex consists of the subunits yPIG-K (Gpi8p), yPIG-S (Gpi17p), yPIG-T (Gpi16p), yPIG...

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Autores principales: Saw, Wuan Geok, Eisenhaber, Birgit, Eisenhaber, Frank, Grüber, Gerhard
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Portland Press Ltd. 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3610296/
https://www.ncbi.nlm.nih.gov/pubmed/23458223
http://dx.doi.org/10.1042/BSR20120107
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author Saw, Wuan Geok
Eisenhaber, Birgit
Eisenhaber, Frank
Grüber, Gerhard
author_facet Saw, Wuan Geok
Eisenhaber, Birgit
Eisenhaber, Frank
Grüber, Gerhard
author_sort Saw, Wuan Geok
collection PubMed
description The GPI (glycosylphosphatidylinositol) transamidase complex catalyses the attachment of GPI anchors to eukaryotic proteins in the lumen of ER (endoplasmic reticulum). The Saccharomyces cerevisiae GPI transamidase complex consists of the subunits yPIG-K (Gpi8p), yPIG-S (Gpi17p), yPIG-T (Gpi16p), yPIG-U (CDC91/GAB1) and yGPAA1. We present the production of the two recombinant proteins yGPAA1(70–247) and yGPAA1(70–339) of the luminal domain of S. cerevisiae GPAA1, covering the amino acids 70–247 and 70–339 respectively. The secondary structural content of the stable and monodisperse yGPAA1(70–247) has been determined to be 28% α-helix and 27% β-sheet. SAXS (small-angle X-ray scattering) data showed that yGPAA1(70–247) has an R(g) (radius of gyration) of 2.72±0.025 nm and D(max) (maximum dimension) of 9.14 nm. These data enabled the determination of the two domain low-resolution solution structure of yGPAA1(70–247). The large elliptical shape of yGPAA1(70–247) is connected via a short stalk to the smaller hook-like domain of 0.8 nm in length and 3.5 nm in width. The topological arrangement of yGPAA1(70–247) will be discussed together with the recently determined low-resolution structures of yPIG-K(24–337) and yPIG-S(38–467) from S. cerevisiae in the GPI transamidase complex.
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spelling pubmed-36102962013-07-11 Low-resolution structure of the soluble domain GPAA1 (yGPAA1(70–247)) of the glycosylphosphatidylinositol transamidase subunit GPAA1 from Saccharomyces cerevisiae Saw, Wuan Geok Eisenhaber, Birgit Eisenhaber, Frank Grüber, Gerhard Biosci Rep Original Paper The GPI (glycosylphosphatidylinositol) transamidase complex catalyses the attachment of GPI anchors to eukaryotic proteins in the lumen of ER (endoplasmic reticulum). The Saccharomyces cerevisiae GPI transamidase complex consists of the subunits yPIG-K (Gpi8p), yPIG-S (Gpi17p), yPIG-T (Gpi16p), yPIG-U (CDC91/GAB1) and yGPAA1. We present the production of the two recombinant proteins yGPAA1(70–247) and yGPAA1(70–339) of the luminal domain of S. cerevisiae GPAA1, covering the amino acids 70–247 and 70–339 respectively. The secondary structural content of the stable and monodisperse yGPAA1(70–247) has been determined to be 28% α-helix and 27% β-sheet. SAXS (small-angle X-ray scattering) data showed that yGPAA1(70–247) has an R(g) (radius of gyration) of 2.72±0.025 nm and D(max) (maximum dimension) of 9.14 nm. These data enabled the determination of the two domain low-resolution solution structure of yGPAA1(70–247). The large elliptical shape of yGPAA1(70–247) is connected via a short stalk to the smaller hook-like domain of 0.8 nm in length and 3.5 nm in width. The topological arrangement of yGPAA1(70–247) will be discussed together with the recently determined low-resolution structures of yPIG-K(24–337) and yPIG-S(38–467) from S. cerevisiae in the GPI transamidase complex. Portland Press Ltd. 2013-03-28 /pmc/articles/PMC3610296/ /pubmed/23458223 http://dx.doi.org/10.1042/BSR20120107 Text en © 2013 The Author(s) http://creativecommons.org/licenses/by-nc/2.5/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial Licence (http://creativecommons.org/licenses/by-nc/2.5/) which permits unrestricted non-commercial use, distribution and reproduction in any medium, provided the original work is properly cited
spellingShingle Original Paper
Saw, Wuan Geok
Eisenhaber, Birgit
Eisenhaber, Frank
Grüber, Gerhard
Low-resolution structure of the soluble domain GPAA1 (yGPAA1(70–247)) of the glycosylphosphatidylinositol transamidase subunit GPAA1 from Saccharomyces cerevisiae
title Low-resolution structure of the soluble domain GPAA1 (yGPAA1(70–247)) of the glycosylphosphatidylinositol transamidase subunit GPAA1 from Saccharomyces cerevisiae
title_full Low-resolution structure of the soluble domain GPAA1 (yGPAA1(70–247)) of the glycosylphosphatidylinositol transamidase subunit GPAA1 from Saccharomyces cerevisiae
title_fullStr Low-resolution structure of the soluble domain GPAA1 (yGPAA1(70–247)) of the glycosylphosphatidylinositol transamidase subunit GPAA1 from Saccharomyces cerevisiae
title_full_unstemmed Low-resolution structure of the soluble domain GPAA1 (yGPAA1(70–247)) of the glycosylphosphatidylinositol transamidase subunit GPAA1 from Saccharomyces cerevisiae
title_short Low-resolution structure of the soluble domain GPAA1 (yGPAA1(70–247)) of the glycosylphosphatidylinositol transamidase subunit GPAA1 from Saccharomyces cerevisiae
title_sort low-resolution structure of the soluble domain gpaa1 (ygpaa1(70–247)) of the glycosylphosphatidylinositol transamidase subunit gpaa1 from saccharomyces cerevisiae
topic Original Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3610296/
https://www.ncbi.nlm.nih.gov/pubmed/23458223
http://dx.doi.org/10.1042/BSR20120107
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