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ArticleMolecular biotechnology2026

Heterologous Reconstitution of the Biosynthesis Pathway for Producing Holo-C-Phycocyanin Alpha Subunit (CpcA) from Thermosynechococcus sp. TUBT-T01.

Wipawee Sritusnee, Sichon Kachayangyuen, Khanittha Kumnueng, Preeyaphat Sukdaeng, Theppanya Charoenrat, Supenya Chittapun, Plaipol Dedvisitsakul, Chanitchote Piyapittayanun

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Article in Molecular biotechnology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

What it found

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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.

2 · The registry

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

8 authors.

Wipawee SritusneeDepartment of Biotechnology, Faculty of Science and Technology, Thammasat University, Rangsit Campus, Khlong Luang, Pathum Thani, 12120, Thailand.
Sichon KachayangyuenDepartment of Biotechnology, Faculty of Science and Technology, Thammasat University, Rangsit Campus, Khlong Luang, Pathum Thani, 12120, Thailand.
Khanittha KumnuengDepartment of Biotechnology, Faculty of Science and Technology, Thammasat University, Rangsit Campus, Khlong Luang, Pathum Thani, 12120, Thailand.
Preeyaphat SukdaengDepartment of Biotechnology, Faculty of Science and Technology, Thammasat University, Rangsit Campus, Khlong Luang, Pathum Thani, 12120, Thailand.
Theppanya CharoenratDepartment of Biotechnology, Faculty of Science and Technology, Thammasat University, Rangsit Campus, Khlong Luang, Pathum Thani, 12120, Thailand.
Supenya ChittapunDepartment of Biotechnology, Faculty of Science and Technology, Thammasat University, Rangsit Campus, Khlong Luang, Pathum Thani, 12120, Thailand.
Plaipol DedvisitsakulSchool of Science, Mae Fah Luang University, Chiang Rai, 57100, Thailand.
Chanitchote PiyapittayanunDepartment of Biotechnology, Faculty of Science and Technology, Thammasat University, Rangsit Campus, Khlong Luang, Pathum Thani, 12120, Thailand. chanit@tu.ac.th.ORCID http://orcid.org/0009-0003-0435-9707

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

C-phycocyanin (C-PC), a blue protein pigment found in cyanobacteria, has potential properties for use in food and medical applications, including antioxidants, antimicrobial, and anti-inflammatory. Generally, C-PC is extracted from mesophilic cyanobacteria, such as Arthrospira platensis, which is unstable under high-temperature conditions. Therefore, thermophilic cyanobacteria represent potential sources of thermostable C-PC. This study aimed to produce a holo-C-PC alpha subunit (holo-CpcA) from the thermophilic cyanobacterium Thermosynechococcus sp. TUBT-T01 by reconstituting the pathway in Escherichia coli. The constructed expression plasmid was designed with a polycistronic transcription unit containing ho1, pcyA, cpcE, and cpcF inserted into pET3a. Together with the pET28a carrying cpcA gene, two plasmids were co-transformed and co-expressed in E. coli Rosetta (DE3). Following induction, the cell pellet exhibited a visible color change, suggesting successful expression of the C-PC alpha subunit. The antioxidant activity of crude holo-CpcA was analyzed; it showed higher antioxidant activity compared to crude apo-CpcA in both the ABTS radical cation decolorization assay and the ORAC-Fluorescein Assay. This study reported the successful heterologous production of holo-CpcA from Thermosynechococcus sp. in E. coli, and the protein also demonstrated antioxidant activities.

Indexed as

Bacterial ProteinsBiosynthetic PathwaysPhycocyaninThermosynechococcusAntioxidantsEscherichia coliPlasmidsRecombinant ProteinsAntioxidantsBacterial ProteinsPhycocyaninRecombinant ProteinsAntioxidantCo-expressionC-phycocyaninReconstitutionThermosynechococcus

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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.