ReviewaBIOTECH2026
Proanthocyanidins: structure, biosynthesis, regulation, and structure-activity relationships.
Review in aBIOTECH, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Proanthocyanidins (PAs) are polyphenolic compounds widely distributed throughout the plant kingdom, playing critical biological and ecological roles, including in seed dormancy and defense. Owing to their powerful antioxidant, protein-binding, and antimicrobial properties, PAs also have broad applications in healthcare, the food industry, and animal nutrition. Here, we examine recent advances in PA research, focusing on their structural diversity, biosynthetic pathways, regulatory networks, and potential applications. All PAs are oligomers or polymers of flavan-3-ol monomers. PA biosynthesis begins with the phenylpropanoid pathway and the production of the starter units (-)-epicatechin and (+)-catechin. Polymerization proceeds by the addition of activated extension units through non-enzymatic mechanisms. PA biosynthesis is facilitated by metabolic compartmentation and precisely regulated by the MYB-bHLH-WD40 core transcriptional complex, which integrates signals from various phytohormones and environmental factors. Despite sharing common building blocks, PAs are structurally extremely complex, due to variations in their constituent monomers, degree of polymerization, linkage patterns, and chemical modifications. These structural features of PAs collectively determine their physicochemical properties and biological activities. Future PA research should focus on key knowledge gaps, including the site(s) of polymerization within the cell, the mechanisms that determine polymer structure, and the precise structure-activity relationships of PAs. Combined with advanced purification technologies and gene editing and synthetic biology strategies, this knowledge will allow the precise biomanufacturing of target PAs, thereby advancing both fundamental research and industrial applications.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.