Abstract：
:In the present study we have used label-free shotgun proteomic analysis to examine the effects of Fe deficiency on the protein profiles of highly pure sugar beet root plasma membrane (PM) preparations and detergent-resistant membranes (DRMs), the latter as an approach to study microdomains. Altogether, 545 proteins were detected, with 52 and 68 of them changing significantly with Fe deficiency in PM and DRM, respectively. Functional categorization of these proteins showed that signaling and general and vesicle-related transport accounted for approximately 50% of the differences in both PM and DRM, indicating that from a qualitative point of view changes induced by Fe deficiency are similar in both preparations. Results indicate that Fe deficiency has an impact in phosphorylation processes at the PM level and highlight the involvement of signaling proteins, especially those from the 14-3-3 family. Lipid profiling revealed Fe-deficiency-induced decreases in phosphatidic acid derivatives, which may impair vesicle formation, in agreement with the decreases measured in proteins related to intracellular trafficking and secretion. The modifications induced by Fe deficiency in the relative enrichment of proteins in DRMs revealed the existence of a group of cytoplasmic proteins that appears to be more attached to the PM in conditions of Fe deficiency.
journal_name
J Proteome Resjournal_title
Journal of proteome researchauthors
Gutierrez-Carbonell E,Takahashi D,Lüthje S,González-Reyes JA,Mongrand S,Contreras-Moreira B,Abadía A,Uemura M,Abadía J,López-Millán AFdoi
10.1021/acs.jproteome.6b00026subject
Has Abstractpub_date
2016-08-05 00:00:00pages
2510-24issue
8eissn
1535-3893issn
1535-3907journal_volume
15pub_type
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