Systemin

Modify Date: 2024-01-06 11:23:02

Systemin Structure
Systemin structure
Common Name Systemin
CAS Number 137181-56-7 Molecular Weight 2010.28000
Density N/A Boiling Point N/A
Molecular Formula C85H144N26O28S Melting Point N/A
MSDS N/A Flash Point N/A

 Use of Systemin


Systemin, an 18-amino acid polypeptide, has been isolated from tomato leaves that is a powerful inducer of over 15 defensive genes. Sequence: Ala-Val-Gln-Ser-Lys-Pro-Pro-Ser-Lys-Arg-Asp-Pro-Pro-Lys-Met-Gln-Thr-Asp.

 Names

Name systemin
Synonym More Synonyms

 Systemin Biological Activity

Description Systemin, an 18-amino acid polypeptide, has been isolated from tomato leaves that is a powerful inducer of over 15 defensive genes. Sequence: Ala-Val-Gln-Ser-Lys-Pro-Pro-Ser-Lys-Arg-Asp-Pro-Pro-Lys-Met-Gln-Thr-Asp.
Related Catalog
In Vitro Systemin is readily transported from wound sites and is considered to be the primary systemic signal.The signal transduction pathway that mediates Systemin signaling involves linolenic acid release from membranes and subsequent conversion to jasmonic acid, a potent activator of defense gene transcription. The pathway exhibits analogies to arachidonic acid/prostaglandin signaling in animals that leads to inflammatory and acute phase responses[1]. Systemin, an 18-amino-acid peptide signal. Systemin is cleaved from the C-terminal region of a 200-amino acid precursor protein called proSystemin. Following the cloning of proSystemin gene, which represents a single locus in the tomato genome, several lines of genetic evidence indicate that Systemin acts as an upstream component of wound-induced signaling cascades leading to defense gene expression[2].
References

[1]. Ryan CA, et al. Systemin: a polypeptide signal for plant defensive genes. Annu Rev Cell Dev Biol. 1998;14:1-17.

[2]. Sun JQ, et al. Systemin/Jasmonate-mediated systemic defense signaling in tomato. Mol Plant. 2011 Jul;4(4):607-15.

 Chemical & Physical Properties

Molecular Formula C85H144N26O28S
Molecular Weight 2010.28000
Exact Mass 2009.04000
PSA 909.59000
Storage condition 2-8℃

 Synonyms

ala-val-glu-ser-lys-pro-pro-ser-lys-arg-asp-pro-pro-lys-met-glu-thr-asp
h2n-avqskppskrdppkmqtd-oh
h-ala-val-gln-ser-lys-pro-pro-ser-lys-arg-asp-pro-pro-lys-met-gln-thr-asp-oh
ala-val-gln-ser-lys-pro-pro-ser-lys-arg-asp-pro-pro-lys-met-gln-thr-asp
avqskppskrdppkmqtd