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Function of your protein

is a protein that originates from members of the order Thermoplasmatales, however in this article specifically the Mevalonate 3,5-bisphosphate being studied originated from the species Picrophilus Torridus. The purpose of this protein is to catalyze an elimination reaction in order to remove the 3-phosphate group from mevalonate 3,5-biphosphate and further goes on to decarboxylate the substrate produced thereby removing carboxyl groups from the acidic substrate.

Biological relevance and broader implications

This article’s goal was to test the function and relation of the protein Mevalonate 3,5-bisphosphate and compare it to its homologs. The article seeks to explore the evolutionary changes that the protein has gone through that managed to separate it from its suspected evolutionary predecessors which require ATP to function and allowed it to become ATP-independent. This suspected evolutionary relevance is due to the residual signs of the ATP binding site which are still present in the Mevalonate 3,5-bisphosphate despite the protein being completely ATP-independent. This ATP binding site present in Mevalonate 3,5-bisphosphate's likely evolutionary predecessors has been bound to by a ligand similar to a fatty acid.

Oleic Acid(suspected ligand present)

Important amino acids

Unfortunately due to the relatively recent studies pertaining to the structure and bind of Mevalonate 3,5-bisphosphate, the researchers are not exactly sure what the ligand present in the protein is. However, through this study, they determined that the closest match they could find for the present is Oleic Acid(OLA). The ligand is bound via hydrogen bonding to H2O and . Another essential amino acid is the aspartate residue() as loss of this catalyst results in complete loss of Mevalonate 3,5-bisphosphate decarboxylase activity.

Structural highlights

Mevalonate 3,5-bisphosphate is a homodimer made up of . Because Mevalonate 3,5-bisphosphate is a homodimer both molecules present are in primary, secondary, and tertiary structure. Mevalonate 3,5-bisphosphate is amphipathic as showcased by the surplus of hydrophobic as well as hydrophilic amino acids present in its . This also shows us the large cleft for substrate binding present on the molecule.

Other important features

As stated earlier the important amino acids section unfortunately the dimer for Mevalonate 3,5-bisphosphate has not been confirmed but one of the factors that led to the assumption that the unknown ligand is a fatty acid like Oleic Acid was due to the amphipathic nature of the binding site showcased by the presence of non-polar molecules in the binding site as well as polar molecules such as surrounding the opening of the cavity.