Product name: Phytosulfokine-α

Synonyms: Phytosulfokine-alpha,PSK-alpha,Phytosulfokine-a,plant growth factor,PSK-α,

Sequence: Y(SO3H)IY(SO3H)TQ

Modifications: Sulfotyrosine(1,3),

Purity: 95% by HPLC

Counter ion: Trifluoacetate

Format: Lyophilized powder

Description: Phytosulfokine (PSK) is a 5-amino-acid secreted peptide that contains two sulfated tyrosines. PSK was initially identified as a growth-promoting signal involved in the “density effect” in plant cell cultures. Addition of PSK to culture medium significantly improves the efficiency of cellular proliferation, even when the initial cell population is below the critical density. It was later shown that PSK also promotes in vitro tracheary element differentiation, somatic embryogenesis, and pollen germination.PSK signaling affects potential for growth and cellular longevity, thereby exerting a pleiotropic effect on individual cells in response to environmental conditions.

Uniprot ID: Q9FS10

Usage: For Scientific Research Use Only, Not for Human Use.

Reference:

Handbook of Biologically Active Peptides (Second Edition), 2013, Pages 35-39.

Plant Science, Volume 169, Issue 5, November 2005, Pages 901-907.

Plant Physiology and Biochemistry, Volume 41, Issue 5, May 2003, Pages 447-452.

Biochemical and Biophysical Research Communications, Volume 225, Issue 1, 5 August 1996, Pages 209-214.