ArticlePlant signaling & behavior2011
Nicotiana tabacum protoplasts secretome can evidence relations among regulatory elements of exocytosis mechanisms.
Article in Plant signaling & behavior, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- SNAREs SYP121 and SYP122 Mediate the Secretion of Distinct Cargo Subsets.Plant physiology · 2018Article
- Plant secretomics: identification, isolation, and biological significance under environmental stress.Plant signaling & behavior · 2014Review
- Methodologies to decipher the cell secretome.Biochimica et biophysica acta · 2013Review
- Plant secretome proteomics.Frontiers in plant science · 2013Article
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
An alternative study involving proteome analysis of the 24 hour Nicotiana tabacum protoplast culture medium was performed with the aim to confirm relations among regulatory elements of exocytotic processes. Protoplasts present many convenient features to study cellular processes during transient over-expression or suppression of specific gene's products. We performed a proteomic analysis of the culture medium fraction of protoplasts transiently expressing transgenes for 24 hours to characterize the effect of various regulatory proteins dominant negative mutants. A total number of 49 spots were found reproducible in the medium. 24 of these spots were identified with nano RP-HPLC-ESI-MS/MS. Only three and six spots were respectively identified as canonical and non-canonical secreted cell wall proteins. The low number of spots present in the culture medium fraction allowed us the ambitious experiment to analyze the influence of various SNAREs (SYP121, SYP122, SNAP33) and Rab (Rab11) dominant negative mutants. Missing a reasonable number of identified proteins the analyses gave rise to a similarity matrix statistically analyzed considering variation within the presence of 24 spots reproducible in presence of transient over-expression of SNAREs (SYP121 and SYP122) and Rab11 native cDNAs. The similarity confirmed the closer relation between the function of SYP122 and Rab11 as evidenced by the secRGUS based analysis. This analysis included the effect of SNAP33 DN mutant and showed that this Qb-c-SNARE influence both SYP121 and SYP122 SNARE complexes.
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