Recombinant Staphylococcus epidermidis Putative antiporter subunit mnhB2 (mnhB2)
Description
Contextual Overview of mnhB2 in Staphylococci
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mnhB2 in S. aureus:
The mnhB2 protein in S. aureus (strain Newman) is a putative antiporter subunit involved in sodium/proton exchange. Recombinant versions of this protein are produced for research purposes, typically in E. coli or yeast systems .-
Function: Antiporters regulate intracellular pH and ion homeostasis, critical for bacterial survival under stress conditions.
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Structure: The protein spans 141 amino acids and is part of a multi-subunit membrane complex.
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Lack of mnhB2 Documentation in S. epidermidis:
No peer-reviewed studies or commercial products specifically mention mnhB2 in S. epidermidis. Genomic databases (e.g., NCBI, UniProt) also lack entries for this protein in S. epidermidis.
Related Proteins in S. epidermidis
While mnhB2 is not documented, S. epidermidis expresses structurally or functionally analogous proteins:
Research Gaps and Hypotheses
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Horizontal Gene Transfer:
S. epidermidis frequently acquires mobile genetic elements (e.g., SCCmec, ICEs) . If mnhB2 exists in S. epidermidis, it may reside on an uncharacterized genomic island. -
Functional Homologs:
Proteins like Embp (1 MDa extracellular adhesin) share structural complexity with mnhB2-associated systems in S. aureus but serve distinct roles .
Technical Challenges in Recombinant Production
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Expression Systems:
Recombinant proteins in S. epidermidis often require optimized E. coli or mammalian cell systems due to codon bias and post-translational modification needs . -
Antiporter Characterization:
Membrane proteins like mnhB2 are notoriously difficult to purify, requiring detergent solubilization and lipid reconstitution .
Recommendations for Future Research
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Genomic Mining:
Screen S. epidermidis ST2 strains (predominant in infections) for mnhB2-like sequences using whole-genome sequencing . -
Functional Studies:
Use CRISPR-Cas9 to delete putative antiporter genes and assess phenotypic impacts on ion homeostasis or virulence. -
Structural Analysis:
Resolve cryo-EM structures of recombinant mnhB2 (if identified) to compare with S. aureus homologs.
Product Specs
Note: We will prioritize shipping the format currently in stock. However, if you have specific format requirements, please indicate them in your order. We will accommodate your request whenever possible.
Note: All our proteins are shipped with standard blue ice packs by default. If you require dry ice shipping, please inform us in advance, as additional fees will apply.
Target Background
KEGG: ser:SERP0282
STRING: 176279.SERP0282
