Protein Networks

In plants, the following peptide ligands have been found:

Name	Function	Mature protein (AA)	Receptors
CLAVATA3	Promote cell differentiation	78	CLV1 and CLV2 complex
Systemin	Defense response	18	LRR receptor kinase
Phytosulfokine	Cell density factor for cell division	4-5	LRR receptor kinase
SCA	Self-incapability in Brassica	91	LRR receptor kinase
ESR3	Embryo-endosperm interaction (?)	112	Unknown
LLP1	Cell differentiation	51	Unknown
Defensin	Defense response	61	Unknown

Literatures:
A.E. Trouchaud, S. Jeong, S.E. Clark (2000) CLAVATA3, a multimeric ligand for the CLVATA1 receptor kinase. Science 289: 613-617.

J. M. Scheer and C.A. Ryan, Jr. (2002) The systemin receptor SR160 from L. peruvianum is a member of the LRR receptor kinase family. PNAS 99: 9585-9590.

Liu, C.M., Cordewener, J.H.G., Fiers, M., Joosen, R., A.H.M. van der Geest (2000) A group of polypeptides and their coding polynucleiotide sequences that can modulate plant growth, development and defense response. PCT/NL01/00452.