PXD032195 is an
original dataset announced via ProteomeXchange.
Dataset Summary
Title | UNASSAMBLED CELL WALL PROTEINS FORM AGGREGATES IN THE EXTRACELLULAR SPACE OF CHLAMYDOMONAS REINHARDTII STRAIN UVM4 |
Description | The green microalga Chlamydomonas reinhardtii is emerging as a promising cell biofactory for secreted recombinant protein (RP) production. In recent years, the generation of the broadly-used cell wall-deficient mutant strain UVM4 has allowed for a drastic increase in secreted RP yields. However, purification of secreted RPs from the extracellular space of C. reinhardtii strain UVM4 is challenging. Previous studies suggest that secreted RPs are trapped in a matrix of cell wall protein aggregates populating the secretome of strain UVM4, making it difficult to isolate and purify the RPs. To better understand the nature and behaviour of these extracellular protein aggregates, we analysed and compared the extracellular proteome of the strain UVM4 to its cell-walled ancestor, C. reinhardtii strain 137c. When grown under the same conditions, strain UVM4 produced a unique extracellular proteomic profile, including a higher abundance of secreted cell wall glycoproteins. Further characterization of high molecular weight extracellular protein aggregates in strain UVM4 revealed that they are largely comprised of pherophorins, a specific class of cell wall glycoproteins. Our results offer important new insights into the extracellular space of strain UVM4, including strain-specific secreted cell wall proteins and the composition of the aggregates possibly related to impaired RP purification. The discovery of pherophorins as a major component of extracellular protein aggregates will inform future strategies to remove or prevent aggregate formation, enhance purification of secreted RPs, and improve yields of recombinant biopharmaceuticals in this emerging cell biofactory. |
HostingRepository | PRIDE |
AnnounceDate | 2022-08-11 |
AnnouncementXML | Submission_2022-08-11_06:10:49.961.xml |
DigitalObjectIdentifier | https://dx.doi.org/10.6019/PXD032195 |
ReviewLevel | Peer-reviewed dataset |
DatasetOrigin | Original dataset |
RepositorySupport | Supported dataset by repository |
PrimarySubmitter | Matthew Padula |
SpeciesList | scientific name: Chlamydomonas reinhardtii; NCBI TaxID: 3055; |
ModificationList | monohydroxylated residue; iodoacetamide derivatized residue; deamidated residue |
Instrument | Q Exactive |
Dataset History
Revision | Datetime | Status | ChangeLog Entry |
0 | 2022-03-11 08:53:44 | ID requested | |
⏵ 1 | 2022-08-11 06:10:50 | announced | |
Publication List
Barolo L, Commault AS, Abbriano RM, Padula MP, Kim M, Kuzhiumparambil U, Ralph PJ, Pernice M, Unassembled cell wall proteins form aggregates in the extracellular space of Chlamydomonas reinhardtii strain UVM4. Appl Microbiol Biotechnol, 106(11):4145-4156(2022) [pubmed] |
Keyword List
submitter keyword: Microalgae, recombinant protein, secretome, Chlamydomonas, glycoproteins, proteomics, pherophorins |
Contact List
Peter J. Ralph |
contact affiliation | Climate Change Cluster, University of Technology Sydney, 15 Broadway, Ultimo 2007, Sydney, NSW, Australia |
contact email | peter.ralph@uts.edu.au |
lab head | |
Matthew Padula |
contact affiliation | University of technology Sydney |
contact email | matthew.padula@uts.edu.au |
dataset submitter | |
Full Dataset Link List
Dataset FTP location
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PRIDE project URI |
Repository Record List
[ + ]
[ - ]
- PRIDE
- PXD032195
- Label: PRIDE project
- Name: UNASSAMBLED CELL WALL PROTEINS FORM AGGREGATES IN THE EXTRACELLULAR SPACE OF CHLAMYDOMONAS REINHARDTII STRAIN UVM4