Science AI Journal
Medicine · Research topic

Open research questions in Microbial Natural Products and Biosynthesis

33 unresolved questions extracted from the limitations and future-work sections of 201 Microbial Natural Products and Biosynthesis papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • Significance StatementCyanobacteria produce unusually complex peptides, but the enzymatic logic that builds their signature {beta}-amino polyketide residues is poorly understood.

    Shared biosynthetic architectures generate diverse β-amino polyketide residues in cyanobacterial peptides · 2026 · DOI

  • Future investigations should focus on targeted isolation and structural characterization of the key metabolites, integration of quantitative metabolomics to validate biomarkers of activity, and in vivo as well as mechanistic studies to fully elucidate their pharmacological potential and biosynthetic pathways.

    Microbial biotransformation of Syzygium australe modifies metabolomic profile assessed with multivariate analysis and molecular networking: In vitro and computational studies · 2026 · DOI

  • 1012165 May 27, 2026 11 / 19 indirect, remains to be elucidated, these results identify FadM as a key modulator linking FASII and phospholipid homeo- stasis in S.

    FabF and FadM cooperate to recycle fatty acids and rescue ∆plsX lethality in Staphylococcus aureus · 2026 · DOI

  • The heterologous expression system was constructed in a single fungal host and evaluated only under static solid-state fermentation (CD-ST medium at 28°C for 7 days); expression in alternative fungal or bacterial hosts and evaluation under liquid culture conditions with varying aeration rates could enhance compound production.

    Discovery of unprecedented prenylated indole piperazines and pyrazines through cryptic biosynthetic gene cluster heterologous expression · 2026 · DOI

  • While chemical synthesis of compound 14 was performed to verify FlzE substrate promiscuity, the regioselectivity of prenylation on the indole ring (C2 vs. C3 positions) and the mechanism by which FlzE directs selectivity toward specific regioisomers for different indole substrates have not been elucidated.

    Discovery of unprecedented prenylated indole piperazines and pyrazines through cryptic biosynthetic gene cluster heterologous expression · 2026 · DOI

  • The FlzE enzymatic assays were conducted at fixed conditions (37°C for 12 h, 10 µM enzyme, 1 mM substrate in Tris-HCl pH 7.5), but the kinetic parameters (Km, Vmax) and optimal reaction conditions for prenylation of structurally diverse indole scaffolds have not been systematically characterized.

    Discovery of unprecedented prenylated indole piperazines and pyrazines through cryptic biosynthetic gene cluster heterologous expression · 2026 · DOI

  • The heterologous expression system yielded low isolated amounts of prenylated indole piperazines and pyrazines (compounds 8-9: 1-0.9 mg; compounds 15-17: 2-3 mg from 4L cultures), indicating optimization of the biosynthetic gene cluster expression level and culture media composition for these cryptic gene clusters is necessary to enable scale-up production.

    Discovery of unprecedented prenylated indole piperazines and pyrazines through cryptic biosynthetic gene cluster heterologous expression · 2026 · DOI

  • The substrate promiscuity of FlzE prenyltransferase was demonstrated through chemical synthesis of compound 14 and enzymatic assays with compounds 10-13, but systematic investigation of FlzE's tolerance toward non-tryptophan indole derivatives and alternative prenyl donors beyond DMAPP has not been conducted to establish the full scope of substrate specificity.

    Discovery of unprecedented prenylated indole piperazines and pyrazines through cryptic biosynthetic gene cluster heterologous expression · 2026 · DOI

  • Additional research into these substances as possible candidates for drug development is needed to expand on Streptomyces VITGV100 metabolic capacities.

    Enhancing antimicrobial compound production in Streptomyces sp. VITGV100 using chitosan and its nanoparticles · 2026 · DOI

  • The study identifies cholest-5-ene-16,22-dione as having high binding affinity to target protein 4URM through docking, but functional antimicrobial activity of this specific compound is not experimentally confirmed.

    Enhancing antimicrobial compound production in Streptomyces sp. VITGV100 using chitosan and its nanoparticles · 2026 · DOI

  • Two compounds (8-octadecenoic acid methyl ester and 7,10-octadecadienoic acid methyl ester) were excluded due to logP values greater than 5, though they may still display biological activity or be optimized for non-oral delivery.

    Computational screening of GC-MS-derived secondary metabolites from Botryodiplodia theobromae (Lasiodiplodia theobromae) as potential ERBIN inhibitors in breast cancer · 2026 · DOI

  • Lanthipeptide synthetases provide a tantalizing oppor- tunity to manipulate the macrocyclization of structurally complex peptides for biomedical purposes. While it is not yet possible to predict thioether bridge topology from LanA amino acid sequence or to guide topology using a suitably engineered enzyme or peptide, it is becoming clear that the structure and conformational dynamics of both the LanA peptide and lanthipeptide synthetases play critical roles in guiding both the regio- and stereochemistry of the iterative macrocyclization process. The continued application of cutting-edge structural biology approaches combined with advances in structural bioinformatics and computational modeling is expected to further refine our understanding of the structural mechanisms driving lanthipeptide biosyn- thetic fidelity in the coming yearsdpromising an exciting new era in both fundamental and applied RiPP enzymology.

    The conformationally dynamic structural biology of lanthipeptide biosynthesis · 2023 · DOI

  • The paper demonstrates that dihydroartemisinin shows four-fold higher antimalarial activity than artemisinin itself, but does not elucidate the biochemical or pharmacological mechanism explaining this activity enhancement or identify which specific structural modification of the C-12 carbonyl group is responsible for the improved potency.

    Chemistry of Fungal Products · 2011 · DOI

  • The poor water and oil solubility of artemisinin is identified as limiting parenteral administration, and various ether, ester, and carboxy ester derivatives are synthesized to address this, but the paper does not systematically evaluate or compare the solubility profiles of these derivatives or determine which structural modifications most effectively improve bioavailability.

    Chemistry of Fungal Products · 2011 · DOI

  • Compound 58-8 is identified as the most active derivative in in vitro screening (IC50 indices of 69.90 for W-2 and 33.17 for D-6 clones), but the paper does not provide in vivo efficacy data in animal malaria models or clinical efficacy data in human patients to validate whether in vitro potency translates to therapeutic benefit.

    Chemistry of Fungal Products · 2011 · DOI

  • The paper reports that artemisinin inhibits malaria protozoa only at the erythrocytic stage but is inactive at exo-erythrocytic and pre-erythrocytic stages, but does not investigate the molecular mechanism underlying this stage-specific activity or identify which structural features of artemisinin enable selective erythrocytic-stage inhibition.

    Chemistry of Fungal Products · 2011 · DOI

  • In vitro screening of artemisinin derivatives against P. falciparum drug-resistant clones (W-2 and D-6) is reported, but the paper lacks systematic structure-activity relationship (SAR) analysis correlating specific structural modifications (C-4 alkyl, C-11 demethyl, C-12 decarbonyl substitutions) to observed antimalarial potency differences across resistant strains.

    Chemistry of Fungal Products · 2011 · DOI

  • The paper demonstrates that artemisinin derivatives show rapid metabolism with short half-lives in blood, leading to higher recurrence rates, but does not specify which metabolic pathways are responsible for this rapid clearance or identify the specific metabolic enzymes involved in breaking down artemisinin and its derivatives.

    Chemistry of Fungal Products · 2011 · DOI

  • Overall, our findings underscore freshwater sediments as a valuable yet underexplored reservoir of Streptomyces with substantial biosynthetic potential.

    Unveiling the genomes and secondary metabolomes of Streptomyces spp. from freshwater sediments · 2026 · DOI

  • Although natural products and their coding BGCs describe different data modalities of the same biochemical process, a unified language to jointly describe their biochemistry is lacking.

    RetroMol: Parsing a shared encoding from natural products and their biosynthetic gene clusters · 2026 · DOI

  • Cyanobacteria generate structurally complex peptides with diverse biological functions and vast chemical diversity, yet the enzymatic logic that produces their many documented unusual {beta}-amino acid-containing polyketide units remains incompletely understood.

    Shared biosynthetic architectures generate diverse β-amino polyketide residues in cyanobacterial peptides · 2026 · DOI

Most-cited papers in Microbial Natural Products and Biosynthesis

Most recent work

Find a gap in your own Microbial Natural Products and Biosynthesis sub-topic

This page shows what the Microbial Natural Products and Biosynthesis literature already flags as unresolved. To narrow it to your specific question, run the guided finder — it searches the gap library on demand and checks candidates against 250M+ OpenAlex works.

Open the Research Gap Finder →

Related topics in Medicine

Substance Abuse Treatment and Outcomes
989 open questions
Artificial Intelligence in Healthcare and Education
607 open questions
Attention Deficit Hyperactivity Disorder
448 open questions
Physical Activity and Health
436 open questions
Smoking Behavior and Cessation
402 open questions
Innovations in Medical Education
364 open questions
Dementia and Cognitive Impairment Research
363 open questions
HIV/AIDS Research and Interventions
342 open questions
33 open questions have been extracted from the limitations and future-work passages of 201 Microbial Natural Products and Biosynthesis papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

Tools for your next paper

Gaps & Literature SearchFind open questions in any field — 120,000+ open gaps mined from our own library.Pre-CheckIs your paper ready? A Tier 1–5 acceptance probability in seconds.Journal FinderA ranked shortlist of target journals from a 17,500-venue index.Duplicate Publication CheckerCheck prior-publication & salami-slicing risk across 8 sources.Citation GeneratorFreeA DOI or title → APA, MLA, Vancouver, Chicago, BibTeX, RIS. No signup.Graphical Abstract MakerFreeTurn your findings into a colorblind-safe graphical abstract.

Compare the category — Honest roundups of the AI research tools, ours listed alongside the alternatives.

Command palette

Jump anywhere, run any action.