Heavy Metal-Associated Isoprenylated Plant Proteins (HIPPs) at Plasmodesmata: Exploring the Link between Localization and Function

Heavy metal-associated isoprenylated plant proteins (HIPPs) are a metallochaperone-like protein family comprising a combination of structural features unique to vascular plants. HIPPs possess both one or two heavy metal-binding domains and an isoprenylation site, facilitating a posttranslational pro...

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Main Authors: Zoe Kathleen Barr, Tomáš Werner, Jens Tilsner
Format: Article
Language:English
Published: MDPI AG 2023-08-01
Series:Plants
Subjects:
Online Access:https://www.mdpi.com/2223-7747/12/16/3015
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author Zoe Kathleen Barr
Tomáš Werner
Jens Tilsner
author_facet Zoe Kathleen Barr
Tomáš Werner
Jens Tilsner
author_sort Zoe Kathleen Barr
collection DOAJ
description Heavy metal-associated isoprenylated plant proteins (HIPPs) are a metallochaperone-like protein family comprising a combination of structural features unique to vascular plants. HIPPs possess both one or two heavy metal-binding domains and an isoprenylation site, facilitating a posttranslational protein lipid modification. Recent work has characterized individual HIPPs across numerous different species and provided evidence for varied functionalities. Interestingly, a significant number of HIPPs have been identified in proteomes of plasmodesmata (PD)—nanochannels mediating symplastic connectivity within plant tissues that play pivotal roles in intercellular communication during plant development as well as responses to biotic and abiotic stress. As characterized functions of many HIPPs are linked to stress responses, plasmodesmal HIPP proteins are potentially interesting candidate components of signaling events at or for the regulation of PD. Here, we review what is known about PD-localized HIPP proteins specifically, and how the structure and function of HIPPs more generally could link to known properties and regulation of PD.
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spelling doaj.art-462bd081c2e846858ecb0812982ed5452023-11-19T02:42:29ZengMDPI AGPlants2223-77472023-08-011216301510.3390/plants12163015Heavy Metal-Associated Isoprenylated Plant Proteins (HIPPs) at Plasmodesmata: Exploring the Link between Localization and FunctionZoe Kathleen Barr0Tomáš Werner1Jens Tilsner2Biomedical Sciences Research Complex, University of St Andrews, BMS Building, North Haugh, St Andrews, Fife KY16 9ST, UKDepartment of Biology, University of Graz, Schubertstraße 51, 8010 Graz, AustriaBiomedical Sciences Research Complex, University of St Andrews, BMS Building, North Haugh, St Andrews, Fife KY16 9ST, UKHeavy metal-associated isoprenylated plant proteins (HIPPs) are a metallochaperone-like protein family comprising a combination of structural features unique to vascular plants. HIPPs possess both one or two heavy metal-binding domains and an isoprenylation site, facilitating a posttranslational protein lipid modification. Recent work has characterized individual HIPPs across numerous different species and provided evidence for varied functionalities. Interestingly, a significant number of HIPPs have been identified in proteomes of plasmodesmata (PD)—nanochannels mediating symplastic connectivity within plant tissues that play pivotal roles in intercellular communication during plant development as well as responses to biotic and abiotic stress. As characterized functions of many HIPPs are linked to stress responses, plasmodesmal HIPP proteins are potentially interesting candidate components of signaling events at or for the regulation of PD. Here, we review what is known about PD-localized HIPP proteins specifically, and how the structure and function of HIPPs more generally could link to known properties and regulation of PD.https://www.mdpi.com/2223-7747/12/16/3015plasmodesmataheavy metal-associated plant proteinsHIPPprenylationmetallochaperoneabiotic and biotic stress
spellingShingle Zoe Kathleen Barr
Tomáš Werner
Jens Tilsner
Heavy Metal-Associated Isoprenylated Plant Proteins (HIPPs) at Plasmodesmata: Exploring the Link between Localization and Function
Plants
plasmodesmata
heavy metal-associated plant proteins
HIPP
prenylation
metallochaperone
abiotic and biotic stress
title Heavy Metal-Associated Isoprenylated Plant Proteins (HIPPs) at Plasmodesmata: Exploring the Link between Localization and Function
title_full Heavy Metal-Associated Isoprenylated Plant Proteins (HIPPs) at Plasmodesmata: Exploring the Link between Localization and Function
title_fullStr Heavy Metal-Associated Isoprenylated Plant Proteins (HIPPs) at Plasmodesmata: Exploring the Link between Localization and Function
title_full_unstemmed Heavy Metal-Associated Isoprenylated Plant Proteins (HIPPs) at Plasmodesmata: Exploring the Link between Localization and Function
title_short Heavy Metal-Associated Isoprenylated Plant Proteins (HIPPs) at Plasmodesmata: Exploring the Link between Localization and Function
title_sort heavy metal associated isoprenylated plant proteins hipps at plasmodesmata exploring the link between localization and function
topic plasmodesmata
heavy metal-associated plant proteins
HIPP
prenylation
metallochaperone
abiotic and biotic stress
url https://www.mdpi.com/2223-7747/12/16/3015
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