Algal MIPs
Danielson, Jonas LU ; Anderberg, Hanna LU and Johanson, Urban LU
(2010)
- Abstract
- Background
Major intrinsic proteins (MIPs) also named aquaporins form channels that facilitate the passive
transport of water and/or other small polar but uncharged molecules across membranes. MIPs are
particularly abundant and diversified in terrestrial plants but little is known about their
evolutionary history. In order to shed light upon the origin of the plant MIP subfamilies 9 algal
genomes were searched for MIP encoding genes.
Results
A total of 22 MIPs were identified in the analysed genomes and phylogenetic analyses classified
them into seven subfamilies. At least two of these, Plasma membrane Intrinsic Proteins (PIPs)
and Glp F-like... (More) - Background
Major intrinsic proteins (MIPs) also named aquaporins form channels that facilitate the passive
transport of water and/or other small polar but uncharged molecules across membranes. MIPs are
particularly abundant and diversified in terrestrial plants but little is known about their
evolutionary history. In order to shed light upon the origin of the plant MIP subfamilies 9 algal
genomes were searched for MIP encoding genes.
Results
A total of 22 MIPs were identified in the analysed genomes and phylogenetic analyses classified
them into seven subfamilies. At least two of these, Plasma membrane Intrinsic Proteins (PIPs)
and Glp F-like Intrinsic Proteins (GIPs), are also present in land plants and divergence dating
support that they had formed before terrestrial plants evolved. The other subfamilies were named
MIPA to MIPE to facilitate the use of a common nomenclature for plant MIPs reflecting
phylogenetically stable groups. All of the investigated genomes contained at least one MIP gene
and only in a few of the species with more than one gene the encoded MIPs belonged to different
subfamilies.
Conclusions
Our results suggest that most green algae have at least one MIP and often only from one type of
subfamily. In spite of this the total variation in MIPs and the expected number of different
subfamilies is likely to be even higher than what has been found in higher plants Further studies
are need to discern the function of the algal specific subfamilies MIPA-E. This work provides the
first framework for a systematic investigation of the physiological role of these diverse MIPs. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1714737
- author
- Danielson, Jonas
LU
; Anderberg, Hanna
LU
and Johanson, Urban
LU
- organization
- publishing date
- 2010
- type
- Working paper/Preprint
- publication status
- unpublished
- subject
- pages
- 41 pages
- language
- English
- LU publication?
- yes
- id
- 11d5c4ea-d006-4441-a714-d9c285395d2f (old id 1714737)
- date added to LUP
- 2016-04-04 13:28:17
- date last changed
- 2018-11-21 21:14:12
@misc{11d5c4ea-d006-4441-a714-d9c285395d2f,
abstract = {{Background<br/><br>
Major intrinsic proteins (MIPs) also named aquaporins form channels that facilitate the passive<br/><br>
transport of water and/or other small polar but uncharged molecules across membranes. MIPs are<br/><br>
particularly abundant and diversified in terrestrial plants but little is known about their<br/><br>
evolutionary history. In order to shed light upon the origin of the plant MIP subfamilies 9 algal<br/><br>
genomes were searched for MIP encoding genes.<br/><br>
<br/><br>
Results<br/><br>
A total of 22 MIPs were identified in the analysed genomes and phylogenetic analyses classified<br/><br>
them into seven subfamilies. At least two of these, Plasma membrane Intrinsic Proteins (PIPs)<br/><br>
and Glp F-like Intrinsic Proteins (GIPs), are also present in land plants and divergence dating<br/><br>
support that they had formed before terrestrial plants evolved. The other subfamilies were named<br/><br>
MIPA to MIPE to facilitate the use of a common nomenclature for plant MIPs reflecting<br/><br>
phylogenetically stable groups. All of the investigated genomes contained at least one MIP gene<br/><br>
and only in a few of the species with more than one gene the encoded MIPs belonged to different<br/><br>
subfamilies.<br/><br>
<br/><br>
Conclusions<br/><br>
Our results suggest that most green algae have at least one MIP and often only from one type of<br/><br>
subfamily. In spite of this the total variation in MIPs and the expected number of different<br/><br>
subfamilies is likely to be even higher than what has been found in higher plants Further studies<br/><br>
are need to discern the function of the algal specific subfamilies MIPA-E. This work provides the<br/><br>
first framework for a systematic investigation of the physiological role of these diverse MIPs.}},
author = {{Danielson, Jonas and Anderberg, Hanna and Johanson, Urban}},
language = {{eng}},
note = {{Working Paper}},
title = {{Algal MIPs}},
year = {{2010}},
}