期刊
PROTEIN SCIENCE
卷 17, 期 2, 页码 191-198出版社
WILEY
DOI: 10.1110/ps.073300108
关键词
lipid-transfer proteins; lipid binding; plant defense; extracellular signaling; cuticle
资金
- NCRR NIH HHS [P41 RR001081, P41 RR-01081] Funding Source: Medline
- NIGMS NIH HHS [T32 GM008500] Funding Source: Medline
Plant lipid-transfer proteins (LTPs) are abundant, small, lipid binding proteins that are capable of exchanging lipids between membranes in vitro. Despite their name, a role in intracellular lipid transport is considered unlikely, based on their extracellular localization. A number of other biological roles, including antimicrobial defense, signaling, and cell wall loosening, have been proposed, but conclusive evidence is generally lacking, and these functions are not well correlated with in vitro activity or structure. A survey of sequenced plant genomes suggests that the two biochemically characterized families of LTPs are phylogenetically restricted to seed plants and are present as substantial gene families. This review aims to summarize the current understanding of LTP biochemistry, as well as the evidence supporting the proposed in vivo roles of these proteins within the emerging post-genomic framework.
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