The structural components of the T3SS are encoded by the clustered hypersensitive response and pathogenicity cluster (hrp) genes. 

TLS Online TPP Program

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#Unit 6. System Physiology – Plant

COP1, another negative regulator of photomorphogenesis, is a component of the E3 ubiquitin ligase complex that targets photomorphogenesis-promoting proteins for degradation such as phyA, phyB

TLS Online TPP Program

#Id: 5093

#Unit 6. System Physiology – Plant

COP1 is found in the nucleus in the dark and in the cytoplasm in the light.

TLS Online TPP Program

#Id: 5094

#Unit 6. System Physiology – Plant

During the night, COP1 enters the nucleus with the help of the COP9 signalosome complex (CSN).

TLS Online TPP Program

#Id: 5095

#Unit 6. System Physiology – Plant

During the day, COP1 exits the nucleus, allowing the transcriptional activators to accumulate.

TLS Online TPP Program

#Id: 5096

#Unit 6. System Physiology – Plant

Bacterial phytochrome is an example of a two-component signaling system in which phytochrome functions as a sensor protein that phosphorylates a response regulator.

TLS Online TPP Program

#Id: 5097

#Unit 6. System Physiology – Plant

Plant phytochrome is an autophosphorylating serine/threonine kinase that may phosphorylate other proteins (X).