F
IPR045021

Protein PSK SIMULATOR

InterPro entry
Short namePSI1/2/3

Description

This family represents the plant-specific proteins PSI 1-3 (Protein PSK SIMULATOR 1-3) from Arabidopsis. These proteins promote plant growth, especially at the vegetative stage, probably via the regulation of phytosulfokine (PSK) signalling; PSKs are peptide phytohormones acting as growth factors
[1]
. They are required during vegetative growth and reproduction, PSI1 acts predominantly at the seedling stage whereas PSI2 and 3 are required for vegetative growth where they act synergistically. PSI1 and 3 may also have a function in carbohydrate metabolism
[1]
.

References

1.The PSI family of nuclear proteins is required for growth in arabidopsis. Stuhrwohldt N, Hartmann J, Dahlke RI, Oecking C, Sauter M. Plant Mol. Biol. 86, 289-302, (2014). PMID: 25062973

GO terms

molecular function

  • None

cellular component

  • None
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