Ontology highlight
ABSTRACT:
SUBMITTER: Yang H
PROVIDER: S-EPMC23987 | biostudies-literature | 1999 Nov
REPOSITORIES: biostudies-literature
Proceedings of the National Academy of Sciences of the United States of America 19991101 23
Phytosulfokine-alpha [PSK-alpha, Tyr(SO(3)H)-Ile-Tyr(SO(3)H)-Thr-Gln], a sulfated mitogenic peptide found in plants, strongly promotes proliferation of plant cells in culture at very low concentrations. Oryza sativa PSK (OsPSK) cDNA encoding a PSK-alpha precursor has been isolated. The cDNA is 725 base pairs long, and the 89-aa product, preprophytosulfokine, has a 22-aa hydrophobic region that resembles a cleavable leader peptide at its NH(2) terminus. The PSK-alpha sequence occurs only once wit ...[more]