Article
Biochemistry & Molecular Biology
Piotr Henryk Malecki, Pawel Mitkowski, Elzbieta Jagielska, Karolina Trochimiak, Stephane Mesnage, Izabela Sabala
Summary: The M23 family members, such as lysostaphin or LytM, are well-characterized glycyl-glycine hydrolases. Enzymes like EnpA(CD) from Enterococcus faecalis exhibit a broad specificity for cleaving D,L peptide bonds. The substrate-binding groove architecture and specificity of M23 enzymes suggest that they prefer peptides with short side chains or alternating chirality of amino acids.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Review
Biotechnology & Applied Microbiology
Haipeng Su, Jianan Sun, Zhenrong Jia, Hongjun Zhao, Xiangzhao Mao
Summary: This review provides an overview of the promiscuous activities and substrate specificity of chitosanases, contributing important implications for the future discovery and research of promiscuous chitosanases and applications related to biomass conversion.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2022)
Article
Multidisciplinary Sciences
Baohua Chen, Zheng Liu, Kay Perry, Rongsheng Jin
Summary: The study reveals the mechanism of how toxin A from Clostridioides difficile causes diarrhea by glucosylating and inactivating Rho and Ras family small GTPases, providing insights into substrate recognition.
SCIENTIFIC REPORTS
(2022)
Article
Biochemistry & Molecular Biology
Woo-Chan Ahn, Yan An, Kyung-Mo Song, Kwang-Hyun Park, Su-jin Lee, Byung-Ha Oh, Jong-Tae Park, Eui-Jeon Woo
Summary: Maltodextrin glucosidase (MalZ) is an important enzyme in the maltose utilization pathway in Escherichia coli. The crystal structure of MalZ reveals its substrate binding and hydrolysis mechanism, providing insights for protein engineering.
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
(2022)
Article
Agriculture, Multidisciplinary
Haipeng Su, Hongjun Zhao, Zhenrong Jia, Chaoran Guo, Jianan Sun, Xiangzhao Mao
Summary: This study reveals the digestion specificity and subsite specificity of monosaccharide production by endo-chitosanases, providing a unique example of possible structure-function relationships.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)
Article
Biochemistry & Molecular Biology
Kellie K. Omori, Charles T. Drucker, Tracie L. S. Okumura, Nathaniel B. Carl, Brianna T. Dinn, Destiny Ly, Kylie N. Sacapano, Allie Tajii, Cedric P. Owens
Summary: This study examines the structure, dynamics, and biochemical characteristics of a chlorogenic acid esterase (ChlE) from Lactobacillus helveticus. The results indicate that the access of substrates to the active site of the enzyme is regulated by hairpin loops, and two amino acid residues, Gln(145) and Lys(164), are crucial for chlorogenic acid binding and turnover.
Article
Chemistry, Organic
Guangzheng Wei, Xian Shu, Yongpeng Yao, Kexin Zhang, Jun Zhang, Shu-Shan Gao
Summary: Heterologous expression of the flavipucine biosynthetic gene cluster in Aspergillus nidulans resulted in the production of flavipucine and related products, shedding light on the biosynthesis of these natural products and providing new insights into the formation of 2-pyridone and 2-pyrone structures.
Article
Biochemistry & Molecular Biology
Puneet Garg, Narayanan Manoj
Summary: TmCel5B is a lichenase that belongs to glycoside hydrolase family 5 subfamily 36 (GH5_36). The crystal structure of TmCel5B in complex with 1-deoxynojiromycin (DNJ) was determined to gain insights into the active site of this multifunctional endoglycanase-containing subfamily. The binding of DNJ to the -1 subsite involves non-covalent interactions with conserved residues and a unique Glu-Arg-Glu triad in the catalytic site. Comparative analysis further revealed molecular determinants of homolog-specific properties and the structural basis of iminocyclitol binding to GH5 glycosidases.
Article
Agriculture, Multidisciplinary
Wei Xu, Dawei Ni, Xiaodong Hou, Tjaard Pijning, Albert Guskov, Yijian Rao, Wanmeng Mu
Summary: This study reported the crystal structures of LS from the G(-)-bacterium Brenneria sp. EniD 312, as well as two mutants (A154S, H327A) targeting positions known to affect LS reaction specificity. The H327A mutant resulted in smaller products synthesized, while the A154S mutation affected the enzyme's affinity for sucrose, making it less effective in transfructosylation.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2022)
Article
Biochemistry & Molecular Biology
Gyanendra Kumar, Maxime Cuypers, Richard R. Webby, Thomas R. Webb, Stephen W. White
Summary: The endonuclease activity within the influenza virus cap-snatching process is a proven therapeutic target. Baloxavir, an anti-influenza drug, is effective but linked to resistance mutations. By studying complexes of PA(N) with RNA and DNA oligonucleotides, insights are gained on specificity and structural basis of baloxavir resistance mutations.
NUCLEIC ACIDS RESEARCH
(2021)
Article
Microbiology
Yang Li, Zhen Rong, Zhengyang Li, Henglin Cui, Jixi Li, Xue-Wei Xu
Summary: In this study, a marine microbial carboxylesterase named E93 was found to hydrolyze both CPT11 and NPC substrates. Structural analysis revealed the interaction patterns between the enzyme and the substrates, and three core regions were identified to be involved in substrate specificity. These findings contribute to the understanding of substrate specificity and potential application of microbial Family VII carboxylesterases.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Anand Chopra, William G. Willmore, Kyle K. Biggar
Summary: JmjC KDMs are a type of demethylase that not only are associated with histone demethylation, but also with non-histone demethylation. Recent findings have highlighted the importance of KDM3A in promoting cancerous phenotypes, which can provide insights into the mechanisms through which it exerts its oncogenic functions.
Article
Biotechnology & Applied Microbiology
Junwen Ma, Zhen Qin, Peng Zhou, Ruiming Wang, Qiaojuan Yan, Zhengqiang Jiang, Shaoqing Yang
Summary: In this study, we reported the complex structures and recognition patterns of a fungal GH family 81 endo-beta-1,3-glucanase from Rhizomucor miehei (RmLam81A). Our results provide a structural basis for understanding the diverse physiological functions of beta-1,3-glucanases.
ENZYME AND MICROBIAL TECHNOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Takeaki Ikeuchi, Mizuki Yasumoto, Teisuke Takita, Keisuke Tanaka, Masashi Kusubata, Osamu Hayashida, Shunji Hattori, Kimihiko Mizutani, Bunzo Mikami, Kiyoshi Yasukawa
Summary: Grimontia hollisae strain 1706B (Ghcol) collagenase, a collagen-degrading enzyme, is more efficient than clostridial collagenase. Crystal structures of Ghcol revealed a saddle-shaped structure consisting of activator and peptidase domains with metal ions. The activator domain contains two homologous subdomains, and Ghcol binds Gly-Pro-hydroxyproline (Hyp) molecules at the active site and on surfaces of the activator domain facing the active site. Ghcol exhibits broader substrate specificity than clostridial collagenase, which may be due to larger substrate binding space. Analysis of active-site variants showed the importance of specific tyrosine residues in catalysis and substrate recognition by Ghcol.
JOURNAL OF BIOLOGICAL CHEMISTRY
(2022)
Article
Cell Biology
Martijn Wehrens, Anne E. de Leeuw, Maya Wright-Clark, Joep E. C. Eding, Cornelis J. Boogerd, Bas Molenaar, Petra H. van der Kraak, Diederik W. D. Kuster, Jolanda van der Velden, Michelle Michels, Aryan Vink, Eva van Rooij
Summary: Functional links between genes and cell size relevant for HCM were identified using scRNA-seq on patients' samples. The study provides valuable insights into molecular events involved in HCM and may contribute to the development of enhanced therapies.
Article
Biochemistry & Molecular Biology
Daniel J. Burkett, Brittney N. Wyatt, Mallory Mews, Anson Bautista, Ryan Engel, Chris Dockendorff, William A. Donaldson, Martin St Maurice
BIOORGANIC & MEDICINAL CHEMISTRY
(2019)
Article
Biochemistry & Molecular Biology
Nicholas O. Schneider, Lambros J. Tassoulas, Danyun Zeng, Amanda J. Laseke, Nicholas J. Reiter, Lawrence P. Wackett, Martin St Maurice
Article
Biochemistry & Molecular Biology
Amar Nath Sharma, Lia Grandinetti, Erin R. Johnson, Martin St Maurice, Stephen L. Bearne
News Item
Biochemistry & Molecular Biology
Martin St Maurice
NATURE CHEMICAL BIOLOGY
(2020)
Article
Biochemistry & Molecular Biology
Colin D. Douglas, Lia Grandinetti, Nicole M. Easton, Oliver P. Kuehm, Joshua A. Hayden, Meghan C. Hamilton, Martin St Maurice, Stephen L. Bearne
Summary: 2-FPBA is shown to be a potent reversible, slow-onset inhibitor of mandelate racemase (MR), forming a benzoxaborole through intramolecular cyclization due to the N-zeta-B dative bond formation between Lys 166 and 2-FPBA. The structure of the resulting product when using o-carbonyl arylboronic acid reagents to modify proteins depends on the protein architecture at the site of modification.
Article
Chemistry, Physical
Irene R. A. M. Ogutu, Martin St Maurice, Brian Bennett, Richard C. Holz
Summary: Mutation of the strictly conserved alpha Ser162 residue in PtNHase resulted in two different protein species, one with full complement of cobalt ions and activity, while the other showed no observable activity. Mutants of the axial alpha Cys108 ligand also displayed catalytic competence without the need for transient disulfide bond formation.
Article
Biochemistry & Molecular Biology
Joshua H. Hakala, Amanda J. Laseke, Anya L. Koza, Martin St. Maurice
Summary: The study developed a system to directly observe the positioning of the carrier domain in PC in the presence or absence of ligands, independent of catalytic turnover. It demonstrated that the equilibrium of carrier domain positioning is sensitive to substrate analogues and the allosteric activator, controlled by conformational selection.
Article
Biochemistry & Molecular Biology
Amanda J. J. Laseke, Trevor J. J. Boram, Nicholas O. O. Schneider, Jeremy R. R. Lohman, Martin St Maurice
Summary: This study further characterizes the allosteric regulation of Staphylococcus aureus pyruvatecarboxylase (SaPC), revealing the critical role of Arg(21), Lys(46), and Glu(418) residues in the biotin carboxylasedimer interface in the allosteric activation and inhibition of SaPC. The structure of R21A SaPC in complex with acetyl-CoA provides new insights into the acetyl-CoA binding site and its regulatory function.
Meeting Abstract
Biochemistry & Molecular Biology
Amanda Laseke, Joshua H. Hakala, Martin St Maurice
Meeting Abstract
Biochemistry & Molecular Biology
Nicholas Schneider, Daniel Burkett, Brittney Wyatt, Mallory Mews, Anson Bautista, Ryan Engel, Chris Dockendorff, William Donaldson, Martin St Maurice
Meeting Abstract
Biochemistry & Molecular Biology
Nicholas Schneider, Lambros Tassoulas, Danyun Zeng, Amanda Laseke, Nicholas Reiter, Lawrence Wackett, Martin St Maurice
Meeting Abstract
Biochemistry & Molecular Biology
Amanda Laseke, Martin St Maurice, Jeremy Lohman, Aaron Benjamin
Meeting Abstract
Biochemistry & Molecular Biology
Joshua Hakala, Martin St Maurice
Meeting Abstract
Biochemistry & Molecular Biology
Anya Lei Koza, Joshua Hakala, Martin St Maurice
Meeting Abstract
Biochemistry & Molecular Biology
Yumeng Liu, Adam Lietzan, John Galatowitsch, Martin St Maurice