Dark Blue | possible binding sites at amino acid locations 13-20, 60-64, and 118-121 |
Yellow | beta sheets |
Cyan | alpha helices |
Red | potential phosphorylation site for protein activity regulation; serine residue at amino acid 74 |
PBD | AF-P92978-F1 |
UniProt | [1] |
Rho-related GTPases from plants, otherwise known as ROPs, are involved in cell polarity through the regulation of cytoskeleton components like actin and microtubules. [1] [2] Unlike mammalian cells, plant cells do not contain heterotrimeric G proteins like Cdc42, Rac, and Rho that are known to regulate cellular polarity. [2]
ROP proteins are a type of monomeric G proteins found in plants belonging to the Rho family. [1] ROP binding to GTP or GDP determines its activity due to conformational changes within its structure. [1] Within the G-domain of the structure are the G-box motifs G1-5. These motifs are formed during protein folding and are composed of conserved sequences that are responsible for nucleotide and magnesium binding as well as hydrolysis of GTP. [1] Motifs G2 (switch I loop) and G3 (switch II loop) possess distinct conformations depending on GTP binding state. [1] In addition, the G-domain contains a unique and conserved helical domain commonly found in Rho family proteins called αi. [1]
Specific locations within the 3D ROP protein structure, including the amino acids 13-20, 60-64, and 118-121, act as binding sites during protein activity. [3] The serine residue at amino acid 74 has been shown to be a potential protein activity regulation site through phosphorylation. [4]
Dark Blue | possible binding sites at amino acid locations 13-20, 60-64, and 118-121 |
Yellow | beta sheets |
Cyan | alpha helices |
Red | potential phosphorylation site for protein activity regulation; serine residue at amino acid 74 |
PBD | AF-P92978-F1 |
UniProt | [1] |
Rho-related GTPases from plants, otherwise known as ROPs, are involved in cell polarity through the regulation of cytoskeleton components like actin and microtubules. [1] [2] Unlike mammalian cells, plant cells do not contain heterotrimeric G proteins like Cdc42, Rac, and Rho that are known to regulate cellular polarity. [2]
ROP proteins are a type of monomeric G proteins found in plants belonging to the Rho family. [1] ROP binding to GTP or GDP determines its activity due to conformational changes within its structure. [1] Within the G-domain of the structure are the G-box motifs G1-5. These motifs are formed during protein folding and are composed of conserved sequences that are responsible for nucleotide and magnesium binding as well as hydrolysis of GTP. [1] Motifs G2 (switch I loop) and G3 (switch II loop) possess distinct conformations depending on GTP binding state. [1] In addition, the G-domain contains a unique and conserved helical domain commonly found in Rho family proteins called αi. [1]
Specific locations within the 3D ROP protein structure, including the amino acids 13-20, 60-64, and 118-121, act as binding sites during protein activity. [3] The serine residue at amino acid 74 has been shown to be a potential protein activity regulation site through phosphorylation. [4]