Intercellular Auxin Transport (Arabidopsis thaliana)

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2, 5CellPIN6PIN8IAAPIN51PIN6433IAAIAANucleusEndoplasmic reticulumCytosol


In addition to the PIN family proteins that are mainly involved in the intercellular Autin transport via the Auxin Polar Transport pathway (WP2941) mediated by PIN proteins located on the plasmamembrane, the Arabidopsis PIN family members PIN5, PIN6 and PIN8 are located on the endoplasmic reticulum membrane/envelope. PIN6 is also likely co-located with the nuclear membrane. According to Sawchuk MG et al. (2013) PIN5, PIN6 and PIN8 play roles in leaf vein patterning. PIN5 and PIN8 play an antagonistic role in regulating the intercellular auxin transport as well as in gametophyte (pollen) and sporophyte development.

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  1. Sawchuk MG, Edgar A, Scarpella E; ''Patterning of leaf vein networks by convergent auxin transport pathways.''; PLoS Genet, 2013 PubMed Europe PMC
  2. Ding Z, Wang B, Moreno I, Dupláková N, Simon S, Carraro N, Reemmer J, Pěnčík A, Chen X, Tejos R, Skůpa P, Pollmann S, Mravec J, Petrášek J, Zažímalová E, Honys D, Rolčík J, Murphy A, Orellana A, Geisler M, Friml J; ''ER-localized auxin transporter PIN8 regulates auxin homeostasis and male gametophyte development in Arabidopsis.''; Nat Commun, 2012 PubMed Europe PMC
  3. Barbez E, Kubeš M, Rolčík J, Béziat C, Pěnčík A, Wang B, Rosquete MR, Zhu J, Dobrev PI, Lee Y, Zažímalovà E, Petrášek J, Geisler M, Friml J, Kleine-Vehn J; ''A novel putative auxin carrier family regulates intracellular auxin homeostasis in plants.''; Nature, 2012 PubMed Europe PMC
  4. Mravec J, Skůpa P, Bailly A, Hoyerová K, Krecek P, Bielach A, Petrásek J, Zhang J, Gaykova V, Stierhof YD, Dobrev PI, Schwarzerová K, Rolcík J, Seifertová D, Luschnig C, Benková E, Zazímalová E, Geisler M, Friml J; ''Subcellular homeostasis of phytohormone auxin is mediated by the ER-localized PIN5 transporter.''; Nature, 2009 PubMed Europe PMC
  5. Bender RL, Fekete ML, Klinkenberg PM, Hampton M, Bauer B, Malecha M, Lindgren K, A Maki J, Perera MA, Nikolau BJ, Carter CJ; ''PIN6 is required for nectary auxin response and short stamen development.''; Plant J, 2013 PubMed Europe PMC
  6. Bennett T; ''PIN proteins and the evolution of plant development.''; Trends Plant Sci, 2015 PubMed Europe PMC


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87356view09:31, 22 July 2016MaintBotadded missing graphids
85216view20:29, 29 April 2016Khanspersbolded labels
85022view19:20, 5 April 2016PjaiswalModified description
85020view19:19, 5 April 2016PjaiswalModified description
85001view22:18, 4 April 2016PjaiswalSpecify description
84994view20:40, 4 April 2016PjaiswalAdded PILS genes as group, cited reference and added comment
84992view20:39, 4 April 2016PjaiswalPeriodical save, work in progress
84989view20:29, 4 April 2016PjaiswalPeriodical save, work in progress
84982view17:30, 4 April 2016Pjaiswaledge showing PIN8 downregulation by PIN5 brought to front in display
84981view17:28, 4 April 2016Pjaiswalchanged line style from double to solid selection for ER
84930view17:39, 1 April 2016PjaiswalQuick edit to datanode annotation or property
84929view17:38, 1 April 2016PjaiswalQuick edit to datanode annotation or property
84928view17:35, 1 April 2016PjaiswalQuick edit to datanode annotation or property
84927view17:34, 1 April 2016PjaiswalQuick edit to datanode annotation or property
84920view16:44, 1 April 2016PjaiswalAdded reference PMID 26051227
84915view16:29, 1 April 2016PjaiswalModified description
84914view16:17, 1 April 2016PjaiswalNew pathway

External references


NameTypeDatabase referenceComment
IAAMetabolite16411 (ChEBI)
PIN5ProteinAT5G16530 (Ensembl Plants)
PIN6ProteinAT1G77110 (Ensembl Plants)
PIN8ProteinAT5G15100 (Ensembl Plants)

Annotated Interactions

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