Yellow lupine cyclophilin interacts with nucleic acids

Area of Science:

• Biochemistry
• Molecular Biology
• Plant Science

Background:

• Cytosolic cyclophilins are a class of proteins involved in various cellular processes.
• Understanding plant cyclophilins is crucial for deciphering their roles in plant physiology.

Purpose of the Study:

• To characterize the biochemical properties of yellow lupine cytosolic cyclophilin.
• To investigate its enzymatic activity and nucleic acid binding capabilities.

Main Methods:

• Construction of an expression vector (pET15CYP) for yellow lupine cyclophilin (CyP).
• Expression and purification of recombinant CyP in E. coli.
• Assay of peptidyl-prolyl cis/trans isomerase activity using a synthetic oligopeptide.
• Assessment of nucleic acid binding using DNA and RNA fragments.

Main Results:

• The yellow lupine CyP cDNA encodes a 172-amino acid protein with conserved structural features.
• Purified recombinant yellow lupine cyclophilin demonstrated peptidyl-prolyl cis/trans isomerase activity.
• The recombinant cyclophilin exhibited binding affinity for both single-stranded and double-stranded DNA, as well as RNA.

Conclusions:

• Yellow lupine cytosolic cyclophilin possesses enzymatic activity characteristic of its class.
• This protein has a potential role in interacting with nucleic acids.
• Further studies are warranted to elucidate the specific biological functions of this cyclophilin in yellow lupine.