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Selected Papers from the 5th International Symposium on Frontiers in Molecular Science (ISFMS)

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Biochemistry".

Deadline for manuscript submissions: 31 December 2025 | Viewed by 2803

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Guest Editor
1. Research Laboratory for Epithelial Physiology, Research Organization of Science and Technology, Ritsumeikan University BKC, Kusatsu 525-8577, Japan
2. Medical Research Institute, Kyoto Industrial Health Association, Kyoto 604-8472, Japan
Interests: diabetes mellitus; cancer; ion environments; interstitial fluid pH; ion transporters; ion channels
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
School of Life Science and Technology, Tokyo Institute of Technology, Tokyo 152-8550, Japan
Interests: molecular mechanism of homologous recombination; anti-cancer drug design
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Guest Editor
Laboratory of Animal Science, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto 606-8522, Japan
Interests: feeding regulation; glucose metabolism; obesity; diabetes; vagal sensory nerve; hypothalamus; hormones; neuropeptides

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Division of Digestive Surgery, Department of Surgery, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kamigyo-ku, Kyoto 602-8566, Japan
Interests: esophageal cancer, surgical oncology and cellular physiology

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Department of Molecular Cell Physiology, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
Interests: ion channels; signaling/ion transport in taste and intestinal epithelia
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Special Issue Information

Dear Colleagues,

This Special Issue was created in collaboration with the 5th International Symposium on Frontiers in Molecular Science (ISFMS 2025)—Molecular Regulatory Mechanisms of Biological Function and Drug Discovery based on Protein Structure/Function Analysis, which will be held in Kyoto, Japan, from August 26 to 29, 2025. It comprises six sessions. The conference participants are cordially invited to contribute a full manuscript to this Special Issue and receive a 20% discount on the Article Processing Charge.

ISFMS 2025 Sessions:

S1. Protein Structure and Molecular Dynamics

S2. Enzymes

S3. Membrane Proteins

S4. Cancer Target Proteins

S5. Drug Design and Solution to Drug Resistance Problem

S6. Physiological Functions of Proteins and Organ Interactions

Prof. Dr. Yoshinori Marunaka
Prof. Dr. Masayuki Takahashi
Prof. Dr. Yusaku Iwasaki
Prof. Dr. Atsushi Shiozaki
Prof. Dr. Akiyuki Taruno
Guest Editors

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Keywords

  • protein structure and function
  • multidomain proteins
  • drug design and drug resistance
  • enzymes
  • molecular biology of galectins
  • glycobiophysics
  • NMR spectroscopy
  • specific sensory systems
  • brain and systemic function

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Published Papers (2 papers)

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22 pages, 5064 KB  
Article
Discovery of Galloyl–Flavonoid Conjugates as SARS-CoV-2 3CLpro Inhibitors: Understanding Binding Interactions Through Computational Approaches
by Nopawit Khamto, Panida Boontawee, Vachira Choommongkol, Kritsada Pruksaphon, Suwicha Patnin, Nuttee Suree, Panchika Prangkio and Puttinan Meepowpan
Int. J. Mol. Sci. 2025, 26(19), 9742; https://doi.org/10.3390/ijms26199742 - 7 Oct 2025
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Abstract
The emergence of SARS-CoV-2 in 2019 posed significant global public health challenges. One of the most promising targets for novel antiviral drug development is the SARS-CoV-2 main protease (3CLpro). In this study, fragment molecular orbital (FMO) calculations were conducted to provide [...] Read more.
The emergence of SARS-CoV-2 in 2019 posed significant global public health challenges. One of the most promising targets for novel antiviral drug development is the SARS-CoV-2 main protease (3CLpro). In this study, fragment molecular orbital (FMO) calculations were conducted to provide guidance for the structural modification of natural flavonoids, identifying the pyrogallol moiety as a key candidate. Natural flavonoids were chemically modified to generate 33 semi-synthetic derivatives through the introduction of various functional groups. Our findings revealed that the incorporation of a galloyl moiety significantly enhances anti-proteolytic activity against SARS-CoV-2 3CLpro, achieving up to a 23-fold increase compared to the activity of the parent compounds. Notably, 7-O-galloyl-DMC (40) exhibited the highest anti-proteolytic activity in an enzymatic assay. Additionally, molecular dynamics simulations provided atomic-level insights into the interactions between the galloyl moiety and 3CLpro. All galloylated flavonoid derivatives positioned their galloyl groups within the S1′ sub-pocket, facilitating hydrogen bonding and π-interactions, particularly with Thr26 and Leu27. These findings underscore the potential of the galloyl moiety as a crucial structural element for enhancing the binding affinity of flavonoids with inhibitory activity against SARS-CoV-2 3CLpro. Full article
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12 pages, 251 KB  
Conference Report
Report of the 5th International Symposium on Frontiers in Molecular Science (ISFMS 2025)
by Yoshinori Marunaka, Antonello Merlino, Maria Hrmova, Ye Chun Ruan, Atsushi Shiozaki, Masayuki Takahashi and Yusaku Iwasaki
Int. J. Mol. Sci. 2025, 26(18), 9239; https://doi.org/10.3390/ijms26189239 - 22 Sep 2025
Cited by 1 | Viewed by 876
Abstract
The 5th International Symposium on Frontiers in Molecular Science was held on 26–29 August 2025 in Kyoto (Japan), with the support of Kyoto Prefectural University and Kyoto Prefectural University of Medicine. It is evident that the event has proven to be significant, showcasing [...] Read more.
The 5th International Symposium on Frontiers in Molecular Science was held on 26–29 August 2025 in Kyoto (Japan), with the support of Kyoto Prefectural University and Kyoto Prefectural University of Medicine. It is evident that the event has proven to be significant, showcasing presentations of pioneering research achievements by internationally renowned researchers and fostering numerous stimulating discussions. The symposium’s objective was to identify and select key research themes within the domain of molecular science. Three plenary lecturers and numerous researchers of outstanding merit were invited by chairs to deliver keynote and invited lectures across six fields: S1. Protein Structure and Molecular Dynamics; S2. Enzymes; S3. Membrane Proteins; S4. Cancer Target Proteins; S5. Drug Design and Solution to Drug Resistance Problem; S6. Physiological Functions of Proteins and Organ Interactions. A total of 185 scientists from 31 countries/regions participated in the symposium with 139 presentations. We would like to express our sincere gratitude to the 31 members of the Scientific Committee and the seven members of the Local Organizing Committee who contributed to enhancing the quality of this symposium, ensuring its smooth operation, and dedicating considerable effort to the selection of each award. Full article
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