Recombinant Ostreococcus lucimarinus Methylthioribose-1-phosphate isomerase (OSTLU_35743)
Description
Enzyme Overview and Functional Role
OSTLU_35743 is encoded by the Ostreococcus lucimarinus genome (UniProt ID: A4S068) . It functions as a methylthioribose-1-phosphate isomerase (EC 5.3.1.23), enabling the conversion of MTR-1-P to MTRu-1-P via a proposed cis-phosphoenolate intermediate . This reaction is essential for methionine recycling, which supports cellular processes like protein synthesis and polyamine biosynthesis .
Key Functional Attributes:
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Substrate Specificity: Acts exclusively on MTR-1-P, distinguishing it from structurally similar enzymes like ribose-1,5-bisphosphate isomerase .
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Thermostability: Derived from the hyperthermophilic archaeon Pyrococcus horikoshii, homologs exhibit stability at high temperatures, though O. lucimarinus variants are optimized for marine microbial environments .
Recombinant Production and Purification
OSTLU_35743 is produced recombinantly in yeast (Saccharomyces cerevisiae) with the following specifications :
Product Specs
Target Background
KEGG: olu:OSTLU_35743
STRING: 436017.A4S068
Q&A
Assessment of Available Information
The search results provided contain exclusively fictional dialogue exchanges between characters such as BOWMAN, POOLE, HAL, FLOYD, CORNELIUS, and KORBEN. These dialogues do not contain any scientific information about Ostreococcus lucimarinus or its enzymes. For example, the search results include exchanges like:
"BOWMAN: Good morning. How's it going? POOLE: Are you reasonably awake? BOWMAN: Oh, I'm fine, I'm wide awake. What's up?"
These dramatic dialogues, while interesting in their own context, do not provide any foundation for creating research-focused FAQs about a specific marine algal enzyme.
Methodological Requirements for Enzyme Research FAQs
To properly develop research-focused FAQs on Ostreococcus lucimarinus Methylthioribose-1-phosphate isomerase, the following scientific information would be necessary:
Basic Structural and Functional Characteristics
Comprehensive FAQs would need to address fundamental questions about the enzyme's molecular weight, quaternary structure, active site composition, and basic catalytic mechanism. These details would form the foundation for more advanced research questions.
Expression and Purification Methodologies
Researchers typically require detailed protocols for heterologous expression of recombinant enzymes, including optimal expression systems, purification strategies, and yield optimization techniques. Without specific literature on OSTLU_35743, it's impossible to provide methodologically sound answers.
Enzymatic Assay Procedures
Advanced research questions would need to cover kinetic parameters, substrate specificity, inhibitor studies, and analytical methods for assessing enzyme activity. These methodological details are essential for researchers working with this enzyme.
Metabolic Significance
While specific information about OSTLU_35743 is absent in the provided search results, we can note that methylthioribose-1-phosphate isomerases generally play important roles in methionine salvage pathways. These enzymes catalyze the conversion of methylthioribose-1-phosphate to methylthioribulose-1-phosphate, a critical step in recycling sulfur-containing metabolites.
Evolutionary Significance in Marine Algae
Ostreococcus lucimarinus, as one of the smallest free-living eukaryotes and an important marine primary producer, likely has unique adaptations in its metabolic pathways. Understanding its enzymes could provide insights into the evolution of metabolic processes in minimal eukaryotic genomes.
Primary Scientific Databases
Researchers seeking information about OSTLU_35743 should consult:
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UniProt and other protein databases using the OSTLU_35743 identifier
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PubMed for primary literature on Ostreococcus lucimarinus metabolism
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Specialized algal genome databases that might contain functional annotations
Comparative Genomics Approach
In the absence of direct experimental data, researchers might benefit from comparative analyses with homologous enzymes from related organisms. This approach could provide preliminary insights into potential properties of the Ostreococcus enzyme.
