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Minerals are essential nutrients that the human body needs in small amounts to work properly. They play a vital role in many bodily functions, such as building strong bones and transmitting nerve impulses. Some minerals are needed for hormone production or to maintain a normal heartbeat. Major minerals include calcium, phosphorus, potassium, sulfur, sodium, chlorine, and magnesium, while trace minerals include iron, manganese, copper, iodine, zinc, cobalt, fluoride, and selenium.
 
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A sizable fraction of proteins destined for ER are first synthesized in the cell cytosol and then transported across the ER membrane–a process called post-translational translocation. Similar to cotranslationally translocated proteins, these proteins also use the Sec translocon complex to enter the ER lumen.
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Author Spotlight: Advancing Structural and Biochemical Studies of Proteins Through Thermal Shift Assays
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Selenium and Selenoproteins: Mechanisms, Health Functions, and Emerging Applications.

Shahidin1,2, Yan Wang1,2, Yilong Wu1,2

  • 1Key Laboratory of Pu-erh Tea Science, Ministry of Education, College of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, China.

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Summary

Selenium (Se) is an essential trace element, functioning as an immunonutrient. Organic selenium, particularly selenoproteins, offers superior absorption and diverse health benefits, driving demand for functional foods.

Keywords:
biosynthesisemerging applicationshealth functionsseleniumselenoproteinsstructure insight

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Area of Science:

  • Biochemistry
  • Human Nutrition
  • Molecular Biology

Background:

  • Selenium (Se) is an essential trace element vital for human health, acting as an immunonutrient.
  • It is incorporated into selenocysteine (SeC) and selenomethionine (SeMet), key amino acids in biological processes.
  • Organic Se forms, like selenoproteins, are more bioavailable than inorganic Se.

Purpose of the Study:

  • To review key selenoproteins and their biological functions.
  • To explore selenoprotein biosynthetic pathways.
  • To highlight emerging applications and research needs for selenium.

Main Methods:

  • Literature review of selenoprotein synthesis and function.
  • Analysis of biochemical pathways involving selenium.
  • Synthesis of current research on health benefits and applications.

Main Results:

  • The human genome encodes 25 selenoprotein genes utilizing SeC.
  • Selenoproteins play crucial roles in antioxidant defense, immune regulation, and disease prevention (e.g., cancer, cardiovascular disease, Alzheimer's).
  • Se-enriched functional foods provide bioavailable Se with enhanced antioxidant properties.

Conclusions:

  • Advancements in selenoprotein research reveal significant roles in health and disease.
  • Further research is needed to fully elucidate the potential of selenoproteins and their applications.
  • Organic Se, especially via functional foods, presents a promising strategy for improving Se status and health outcomes.