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  1. Article ; Online: pH-dependent regulation of an acidophilic

    Matoba, Yasuyuki / Oda, Kosuke / Wataeda, Maho / Kanemori, Hina / Matsuo, Koichi

    Applied and environmental microbiology

    2024  Volume 90, Issue 5, Page(s) e0011824

    Abstract: Bacteria have two routes for the l-methionine biosynthesis. In one route called the direct sulfuration pathway, acetylated l-homoserine is directly converted into l-homocysteine. The reaction using H: Importance: In the present study, we can elucidate ...

    Abstract Bacteria have two routes for the l-methionine biosynthesis. In one route called the direct sulfuration pathway, acetylated l-homoserine is directly converted into l-homocysteine. The reaction using H
    Importance: In the present study, we can elucidate the pH-dependent regulation mechanism of the acidophilic OAHS. The acidophilic feature of the enzyme is caused by the introduction of an acidic residue to the neighborhood of the key acidic residue acting as a switch for the structural interconversion. The strategy may be useful in the field of protein engineering to change the optimal pH of the enzymes. In addition, this study may be useful for the development of antibacterial drugs because the l-methionine synthesis essential for bacteria is inhibited by the OAHS inhibitors. The compounds that can inhibit the interconversion between the open and closed forms of OAHS may become antibacterial drugs.
    MeSH term(s) Lactobacillus plantarum/enzymology ; Lactobacillus plantarum/genetics ; Lactobacillus plantarum/metabolism ; Hydrogen-Ion Concentration ; Bacterial Proteins/metabolism ; Bacterial Proteins/genetics ; Bacterial Proteins/chemistry ; Carbon-Oxygen Lyases
    Chemical Substances O-acetylhomoserine (thiol)-lyase
    Language English
    Publishing date 2024-04-03
    Publishing country United States
    Document type Journal Article
    ZDB-ID 223011-2
    ISSN 1098-5336 ; 0099-2240
    ISSN (online) 1098-5336
    ISSN 0099-2240
    DOI 10.1128/aem.00118-24
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Structural Insight into the Interaction of Sendai Virus C Protein with Alix To Stimulate Viral Budding.

    Oda, Kosuke / Matoba, Yasuyuki / Sugiyama, Masanori / Sakaguchi, Takemasa

    Journal of virology

    2021  Volume 95, Issue 19, Page(s) e0081521

    Abstract: Sendai virus (SeV), belonging to ... ...

    Abstract Sendai virus (SeV), belonging to the
    MeSH term(s) Amino Acid Sequence ; Animals ; Binding, Competitive ; Calcium-Binding Proteins/chemistry ; Calcium-Binding Proteins/metabolism ; Cell Cycle Proteins/chemistry ; Cell Cycle Proteins/metabolism ; Cell Line ; Crystallography, X-Ray ; Endosomal Sorting Complexes Required for Transport/chemistry ; Endosomal Sorting Complexes Required for Transport/metabolism ; Humans ; Interferon-alpha/genetics ; Interferon-alpha/metabolism ; Interferon-beta/genetics ; Interferon-beta/metabolism ; Models, Molecular ; Protein Binding ; Protein Conformation ; Protein Domains ; Sendai virus/chemistry ; Sendai virus/genetics ; Sendai virus/metabolism ; Sendai virus/physiology ; Signal Transduction ; Viral Proteins/chemistry ; Viral Proteins/metabolism ; Virion/physiology ; Virus Release
    Chemical Substances CHMP4A protein, human ; CHMP4B protein, human ; Calcium-Binding Proteins ; Cell Cycle Proteins ; Endosomal Sorting Complexes Required for Transport ; Interferon-alpha ; PDCD6IP protein, human ; Viral Proteins ; nonstructural C protein, Sendai virus ; Interferon-beta (77238-31-4)
    Language English
    Publishing date 2021-09-09
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 80174-4
    ISSN 1098-5514 ; 0022-538X
    ISSN (online) 1098-5514
    ISSN 0022-538X
    DOI 10.1128/JVI.00815-21
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Catalytic mechanism of DcsB: Arginase framework used for hydrolyzing its inhibitor.

    Oda, Kosuke / Sakaguchi, Takemasa / Matoba, Yasuyuki

    Protein science : a publication of the Protein Society

    2021  Volume 31, Issue 6, Page(s) e4338

    Abstract: DcsB, an enzyme produced from the d-cycloserine biosynthetic gene cluster, displays moderate similarity to arginase in the sequence and three-dimensional structure. Arginase is a ubiquitous enzyme hydrolyzing l-arginine to generate l-ornithine and urea, ... ...

    Abstract DcsB, an enzyme produced from the d-cycloserine biosynthetic gene cluster, displays moderate similarity to arginase in the sequence and three-dimensional structure. Arginase is a ubiquitous enzyme hydrolyzing l-arginine to generate l-ornithine and urea, whereas DcsB hydrolyzes N
    MeSH term(s) Amino Acids ; Arginase/chemistry ; Arginase/genetics ; Arginine/metabolism ; Catalysis ; Kinetics ; Ornithine
    Chemical Substances Amino Acids ; Arginine (94ZLA3W45F) ; Ornithine (E524N2IXA3) ; Arginase (EC 3.5.3.1)
    Language English
    Publishing date 2021-05-02
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1106283-6
    ISSN 1469-896X ; 0961-8368
    ISSN (online) 1469-896X
    ISSN 0961-8368
    DOI 10.1002/pro.4338
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Crystal structure of O-ureidoserine racemase found in the d-cycloserine biosynthetic pathway.

    Oda, Kosuke / Sakaguchi, Takemasa / Matoba, Yasuyuki

    Proteins

    2021  Volume 90, Issue 4, Page(s) 912–918

    Abstract: The O-ureidoserine racemase (DcsC) is an enzyme found from the biosynthetic gene cluster of antitubercular agent d-cycloserine. Although DcsC is homologous to diaminopimelate epimerase (DapF) that catalyzes the interconversion between ll- and dl- ... ...

    Abstract The O-ureidoserine racemase (DcsC) is an enzyme found from the biosynthetic gene cluster of antitubercular agent d-cycloserine. Although DcsC is homologous to diaminopimelate epimerase (DapF) that catalyzes the interconversion between ll- and dl-diaminopimelic acid, it specifically catalyzes the interconversion between O-ureido-l-serine and its enantiomer. Here we determined the crystal structure of DcsC at a resolution of 2.12 Å, implicating that the catalytic mechanism of DcsC shares similarity with that of DapF. Comparing the structure of the active center of DcsC to that of DapF, Thr72, Thr198, and Tyr219 of DcsC are likely to be involved in the substrate specificity.
    MeSH term(s) Biosynthetic Pathways ; Crystallography, X-Ray ; Cycloserine/chemistry ; Cycloserine/metabolism ; Multigene Family ; Racemases and Epimerases/genetics ; Racemases and Epimerases/metabolism ; Serine/metabolism
    Chemical Substances Serine (452VLY9402) ; Cycloserine (95IK5KI84Z) ; Racemases and Epimerases (EC 5.1.-)
    Language English
    Publishing date 2021-12-17
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 806683-8
    ISSN 1097-0134 ; 0887-3585
    ISSN (online) 1097-0134
    ISSN 0887-3585
    DOI 10.1002/prot.26290
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: The basicity of an active-site water molecule discriminates between tyrosinase and catechol oxidase activity.

    Matoba, Yasuyuki / Oda, Kosuke / Muraki, Yoshimi / Masuda, Taro

    International journal of biological macromolecules

    2021  Volume 183, Page(s) 1861–1870

    Abstract: Tyrosinase (Ty) and catechol oxidase (CO) are members of type-3 copper enzymes. While Ty catalyzes both phenolase and catecholase reactions, CO catalyzes only the latter reaction. In the present study, Ty was found to catalyze the catecholase reaction, ... ...

    Abstract Tyrosinase (Ty) and catechol oxidase (CO) are members of type-3 copper enzymes. While Ty catalyzes both phenolase and catecholase reactions, CO catalyzes only the latter reaction. In the present study, Ty was found to catalyze the catecholase reaction, but hardly the phenolase reaction in the presence of the metallochaperon called "caddie protein (Cad)". The ability of the substrates to dissociate the motif shielding the active-site pocket seems to contribute critically to the substrate specificity of Ty. In addition, a mutation at the N191 residue, which forms a hydrogen bond with a water molecule near the active center, decreased the inherent ratio of phenolase versus catecholase activity. Unlike the wild-type complex, reaction intermediates were not observed when the catalytic reaction toward the Y98 residue of Cad was progressed in the crystalline state. The increased basicity of the water molecule may be necessary to inhibit the proton transfer from the conjugate acid to a hydroxide ion bridging the two copper ions. The deprotonation of the substrate hydroxyl by the bridging hydroxide seems to be significant for the efficient catalytic cycle of the phenolase reaction.
    MeSH term(s) Bacterial Proteins/chemistry ; Bacterial Proteins/genetics ; Bacterial Proteins/metabolism ; Binding Sites ; Catalysis ; Catalytic Domain ; Catechol Oxidase/chemistry ; Catechol Oxidase/genetics ; Catechol Oxidase/metabolism ; Crystallography, X-Ray ; Hydrogen Bonding ; Metallochaperones/metabolism ; Models, Molecular ; Monophenol Monooxygenase/chemistry ; Monophenol Monooxygenase/genetics ; Monophenol Monooxygenase/metabolism ; Mutation ; Protein Binding ; Protein Conformation ; Streptomyces/enzymology ; Streptomyces/genetics ; Substrate Specificity ; Water/chemistry
    Chemical Substances Bacterial Proteins ; Metallochaperones ; Water (059QF0KO0R) ; Catechol Oxidase (EC 1.10.3.1) ; Monophenol Monooxygenase (EC 1.14.18.1)
    Language English
    Publishing date 2021-06-02
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 282732-3
    ISSN 1879-0003 ; 0141-8130
    ISSN (online) 1879-0003
    ISSN 0141-8130
    DOI 10.1016/j.ijbiomac.2021.05.206
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Cyclization mechanism catalyzed by an ATP‐grasp enzyme essential for d‐cycloserine biosynthesis

    Matoba, Yasuyuki / Uda, Narutoshi / Kudo, Mako / Sugiyama, Masanori

    FEBS journal. 2020 July, v. 287, no. 13

    2020  

    Abstract: In the biosynthetic pathway of an antitubercular antibiotic d‐cycloserine (d‐CS), O‐ureido‐d‐serine (d‐OUS) is converted to d‐CS. We have previously demonstrated that DcsG, classified into the ATP‐grasp superfamily enzyme, catalyzes the ring formation to ...

    Abstract In the biosynthetic pathway of an antitubercular antibiotic d‐cycloserine (d‐CS), O‐ureido‐d‐serine (d‐OUS) is converted to d‐CS. We have previously demonstrated that DcsG, classified into the ATP‐grasp superfamily enzyme, catalyzes the ring formation to generate d‐CS, which is accompanied by the cleavage of a bond in the urea moiety of d‐OUS to remove a carbamoyl group. Although the general ATP‐grasp enzymes catalyze an ATP‐dependent ligation reaction between two substrates, DcsG catalyzes specifically the generation of an intramolecular covalent bond. In the present study, cyanate was found in the reaction mixture, suggesting that carbamoyl group is eliminated as an isocyanic acid during the reaction. By the crystallographic and mutational investigations of DcsG, we anticipate the residues necessary for the binding of d‐OUS. An acylphosphate intermediate must be bound at the narrow pocket of DcsG in a folded conformation, inducing the bond cleavage and the new bond formation to generate cyanate and d‐CS, respectively. DATABASE: Structural data are available in Protein Data Bank database under the accession number 6JIL.
    Keywords antibiotics ; biochemical pathways ; biosynthesis ; chemical bonding ; cleavage (chemistry) ; cyanates ; databases ; enzymes ; moieties ; urea
    Language English
    Dates of publication 2020-07
    Size p. 2763-2778.
    Publishing place John Wiley & Sons, Ltd
    Document type Article
    Note NAL-AP-2-clean ; JOURNAL ARTICLE
    ZDB-ID 2173655-8
    ISSN 1742-4658 ; 1742-464X
    ISSN (online) 1742-4658
    ISSN 1742-464X
    DOI 10.1111/febs.15163
    Database NAL-Catalogue (AGRICOLA)

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  7. Article ; Online: Crystal structure of an N

    Oda, Kosuke / Shimotani, Natsuki / Kuroda, Teruo / Matoba, Yasuyuki

    Acta crystallographica. Section D, Structural biology

    2020  Volume 76, Issue Pt 6, Page(s) 506–514

    Abstract: DcsB, one of the enzymes encoded in the D-cycloserine (D-CS) biosynthetic gene cluster, displays a high sequence homology to arginase, which contains two manganese ions in the active site. However, DcsB hydrolyzes ... ...

    Abstract DcsB, one of the enzymes encoded in the D-cycloserine (D-CS) biosynthetic gene cluster, displays a high sequence homology to arginase, which contains two manganese ions in the active site. However, DcsB hydrolyzes N
    MeSH term(s) Amidohydrolases/chemistry ; Amidohydrolases/genetics ; Arginine/analogs & derivatives ; Arginine/metabolism ; Bacterial Proteins/chemistry ; Bacterial Proteins/genetics ; Cycloserine/biosynthesis ; Protein Structure, Tertiary ; Streptomyces/enzymology ; Streptomyces/genetics ; Substrate Specificity
    Chemical Substances Bacterial Proteins ; N(omega)-hydroxyarginine (53054-07-2) ; Arginine (94ZLA3W45F) ; Cycloserine (95IK5KI84Z) ; Amidohydrolases (EC 3.5.-)
    Language English
    Publishing date 2020-05-29
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2968623-4
    ISSN 2059-7983 ; 0907-4449
    ISSN (online) 2059-7983
    ISSN 0907-4449
    DOI 10.1107/S2059798320004908
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Lectins engineered to favor a glycan-binding conformation have enhanced antiviral activity.

    Matoba, Yasuyuki / Sato, Yuichiro / Oda, Kosuke / Hatori, Yuta / Morimoto, Kinjiro

    The Journal of biological chemistry

    2021  Volume 296, Page(s) 100698

    Abstract: Homologues of the Oscillatoria agardhii agglutinin (OAA) lectins contain a sequence repeat of ∼66 amino acids, with the number of tandem repeats varying across family members. OAA homologues bind high-mannose glycans on viral surface proteins, thereby ... ...

    Abstract Homologues of the Oscillatoria agardhii agglutinin (OAA) lectins contain a sequence repeat of ∼66 amino acids, with the number of tandem repeats varying across family members. OAA homologues bind high-mannose glycans on viral surface proteins, thereby interfering with viral entry into host cells. As such, OAA homologues have potential utility as antiviral agents, but a more detailed understanding of their structure-function relationships would enable us to develop improved constructs. Here, we determined the X-ray crystal structure of free and glycan-bound forms of Pseudomonas taiwanensis lectin (PTL), an OAA-family lectin consisting of two tandem repeats. Like other OAA-family lectins, PTL exhibited a β-barrel-like structure with two symmetrically positioned glycan-binding sites at the opposite ends of the barrel. Upon glycan binding, the conformation of PTL undergoes a more significant change than expected from previous OAA structural analysis. Moreover, the electron density of the bound glycans suggested that the binding affinities are different at the two binding sites. Next, based on analysis of these structures, we used site-specific mutagenesis to create PTL constructs expected to increase the population with a conformation suitable for glycan binding. The engineered PTLs were examined for their antiviral activity against the influenza virus. Interestingly, some exhibited stronger activity compared with that of the parent PTL. We propose that our approach is effective for the generation of potential microbicides with enhanced antiviral activity.
    MeSH term(s) Antiviral Agents/chemistry ; Antiviral Agents/metabolism ; Antiviral Agents/pharmacology ; Crystallography, X-Ray ; Lectins/chemistry ; Lectins/genetics ; Lectins/metabolism ; Lectins/pharmacology ; Models, Molecular ; Orthomyxoviridae/drug effects ; Polysaccharides/metabolism ; Protein Binding ; Protein Conformation, beta-Strand ; Protein Engineering
    Chemical Substances Antiviral Agents ; Lectins ; Polysaccharides
    Language English
    Publishing date 2021-04-23
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2997-x
    ISSN 1083-351X ; 0021-9258
    ISSN (online) 1083-351X
    ISSN 0021-9258
    DOI 10.1016/j.jbc.2021.100698
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Cyclization mechanism catalyzed by an ATP-grasp enzyme essential for d-cycloserine biosynthesis.

    Matoba, Yasuyuki / Uda, Narutoshi / Kudo, Mako / Sugiyama, Masanori

    The FEBS journal

    2019  Volume 287, Issue 13, Page(s) 2763–2778

    Abstract: In the biosynthetic pathway of an antitubercular antibiotic d-cycloserine (d-CS), O-ureido-d-serine (d-OUS) is converted to d-CS. We have previously demonstrated that DcsG, classified into the ATP-grasp superfamily enzyme, catalyzes the ring formation to ...

    Abstract In the biosynthetic pathway of an antitubercular antibiotic d-cycloserine (d-CS), O-ureido-d-serine (d-OUS) is converted to d-CS. We have previously demonstrated that DcsG, classified into the ATP-grasp superfamily enzyme, catalyzes the ring formation to generate d-CS, which is accompanied by the cleavage of a bond in the urea moiety of d-OUS to remove a carbamoyl group. Although the general ATP-grasp enzymes catalyze an ATP-dependent ligation reaction between two substrates, DcsG catalyzes specifically the generation of an intramolecular covalent bond. In the present study, cyanate was found in the reaction mixture, suggesting that carbamoyl group is eliminated as an isocyanic acid during the reaction. By the crystallographic and mutational investigations of DcsG, we anticipate the residues necessary for the binding of d-OUS. An acylphosphate intermediate must be bound at the narrow pocket of DcsG in a folded conformation, inducing the bond cleavage and the new bond formation to generate cyanate and d-CS, respectively. DATABASE: Structural data are available in Protein Data Bank database under the accession number 6JIL.
    MeSH term(s) Adenosine Triphosphate/chemistry ; Adenosine Triphosphate/metabolism ; Binding Sites ; Biocatalysis ; Biosynthetic Pathways ; Crystallography, X-Ray ; Cyclization ; Cycloserine/biosynthesis ; Ligases/chemistry ; Ligases/genetics ; Ligases/metabolism ; Models, Molecular ; Mutation ; Protein Binding ; Protein Conformation
    Chemical Substances Adenosine Triphosphate (8L70Q75FXE) ; Cycloserine (95IK5KI84Z) ; Ligases (EC 6.-)
    Language English
    Publishing date 2019-12-31
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2173655-8
    ISSN 1742-4658 ; 1742-464X
    ISSN (online) 1742-4658
    ISSN 1742-464X
    DOI 10.1111/febs.15163
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Two types of phenoloxidases contribute to hemolymph PO activity in spiny Lobster.

    Masuda, Taro / Kawauchi, Tatsuki / Yata, Yuya / Matoba, Yasuyuki / Toyohara, Haruhiko

    Food chemistry

    2018  Volume 260, Page(s) 166–173

    Abstract: Phenoloxidases (POs) play a crucial role in melanization of crustaceans. There are at least two types of POs characterized in crustaceans: the conventional type (POα here) that is expressed in hemocytes and POβ, a secreted protein synthesized in the ... ...

    Abstract Phenoloxidases (POs) play a crucial role in melanization of crustaceans. There are at least two types of POs characterized in crustaceans: the conventional type (POα here) that is expressed in hemocytes and POβ, a secreted protein synthesized in the hepatopancreas. We investigated the source of PO activity in the hemolymph of a lobster and determined the kinetic parameters of mono- and di-PO activities. In the lobster hemolymph, POα, which formed a hexamer similar to both POβ and hemocyanin, contributed to PO activity, whereas the amount of POβ was low. Kinetic analyses using purified prophenoloxidase of crustaceans showed that lobster POα has a higher rate constant, while shrimp POβ has higher specificity in both mono- and di-PO reactions, when tyramine and dopamine were employed as substrates. There should be at least two types of PO molecules in crustacean hemolymph, but the dominant PO molecule type varies among species.
    MeSH term(s) Animals ; Catechol Oxidase ; Dopamine/metabolism ; Enzyme Precursors ; Hemocyanins/metabolism ; Hemocytes/enzymology ; Hemolymph/enzymology ; Kinetics ; Monophenol Monooxygenase/metabolism ; Palinuridae/enzymology ; Penaeidae/enzymology ; Species Specificity ; Substrate Specificity ; Tyramine/metabolism
    Chemical Substances Enzyme Precursors ; Hemocyanins (9013-72-3) ; pro-phenoloxidase (EC 1.10.3.-) ; Catechol Oxidase (EC 1.10.3.1) ; Monophenol Monooxygenase (EC 1.14.18.1) ; Dopamine (VTD58H1Z2X) ; Tyramine (X8ZC7V0OX3)
    Language English
    Publishing date 2018-03-26
    Publishing country England
    Document type Journal Article
    ZDB-ID 243123-3
    ISSN 1873-7072 ; 0308-8146
    ISSN (online) 1873-7072
    ISSN 0308-8146
    DOI 10.1016/j.foodchem.2018.03.110
    Database MEDical Literature Analysis and Retrieval System OnLINE

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