Family Search for PF05003 (DUF668)

April 2024: See Interactive Tools for Functional Annotation of Bacterial Genomes for advice on using these tools.

PF05003 hits 6 sequences in PaperBLAST's database above the trusted cutoff. Showing hits to curated sequences only. Or see all hits or try another family.

PSI1_ARATH / Q9XID5 Protein PSK SIMULATOR 1; AtPSI1 from Arabidopsis thaliana (Mouse-ear cress) (see paper)
Aligns to 379:464 / 657 (13.1%), covers 98.9% of PF05003, 114.6 bits

• function: Promotes seedling growth probably via the regulation of phytosulfokine (PSK) signaling; PSK are peptide phytohormones acting as growth factors (PubMed:25062973). Together with PSI2 and PSI3, required during vegetative growth and reproduction (PubMed:25062973). May also have a function in carbohydrate metabolism (PubMed:25062973).
  disruption phenotype: Short roots and hypocotyls due to both a reduced cell number and reduced cell elongation (PubMed:25062973). Plants missing both PSI1 and PSI3 are dwarf and contain reduced starch levels; these phenotypes are partially rescued by sucrose (PubMed:25062973).

PSI3_ARATH / P0DO24 Protein PSK SIMULATOR 3; AtPSI3 from Arabidopsis thaliana (Mouse-ear cress) (see paper)
Aligns to 371:456 / 649 (13.3%), covers 100.0% of PF05003, 112.1 bits

• function: Promotes plant growth, especially at the vegetative stage, probably via the regulation of phytosulfokine (PSK) signaling; PSK are peptide phytohormones acting as growth factors (PubMed:25062973). Together with PSI2 and PSI3, required during vegetative growth and reproduction (PubMed:25062973). May also have a function in carbohydrate metabolism (PubMed:25062973).
  disruption phenotype: Reduced response to phytosulfokine (PSK) in roots (PubMed:25062973). Small rosettes and dwarf plants as well as early senescence of older leaves (PubMed:25062973). Reduced fertility, premature senescence and severe dwarfism in psi2-1 psi3-1 plants due to reduced cell growth and proliferation as well as premature leaf growth arrest (PubMed:25062973). Plants missing both PSI1 and PSI3 are dwarf and contain reduced starch levels; these phenotypes are partially rescued by sucrose (PubMed:25062973).

PSI2_ARATH / Q9SA91 Protein PSK SIMULATOR 2; AtPSI2 from Arabidopsis thaliana (Mouse-ear cress) (see paper)
Aligns to 354:439 / 615 (14.0%), covers 100.0% of PF05003, 103.6 bits

• function: Promotes seedling growth probably via the regulation of phytosulfokine (PSK) signaling; PSK are peptide phytohormones acting as growth factors (PubMed:25062973). Involved in PSK-induced root growth (PubMed:25062973). Together with PSI1 and PSI3, required during vegetative growth and reproduction (PubMed:25062973).
  disruption phenotype: Reduced fertility, premature senescence and severe dwarfism in psi2-1 psi3-1 plants due to reduced cell growth and proliferation as well as premature leaf growth arrest.

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