Results 11 to 20 of about 2,867 (123)

Emissive Synthetic Cofactors: A Highly Responsive NAD+ Analogue Reveals Biomolecular Recognition Features [PDF]

open access: yes, 2019
Apart from its vital function as a redox cofactor, nicotinamide adenine dinucleotide (NAD+ ) has emerged as a crucial substrate for NAD+ -consuming enzymes, including poly(ADP-ribosyl)transferase 1 (PARP1) and CD38/CD157.
Feldmann, Jonas, Tor, Yitzhak, Li, Yao
core   +1 more source

Saporin, a Polynucleotide–Adenosine Nucleosidase, May Be an Efficacious Therapeutic Agent for SARS-CoV-2 Infection

open access: yes, 2021
Saporin, a type I ribosome-inactivating protein from soapwort plant, is a potent protein synthesis inhibitor. Catalytically, saporin is a characteristic N-glycosidase, and it depurinates a specific adenine residue from a universally conserved loop of the
Murat Kara, Hafize Akgul, Idris Arslan
core   +1 more source

Ureide biogenesis and the enzymes of ammonia assimilation and ureide biosynthesis in nitrogen fixing pigeonpea (Cajanus cajan) nodules [PDF]

open access: yes, 1984
Allantoic acid production from IMP, XMP, inosine, xanthosine, hypoxanthine, xanthine, uric acid and allantoin was investigated by incubating each of these substrates withCajanus cajan cytosol and bacteroid fractions separately in the presence and absence
Singh, Randhir, Amarjit,
core   +1 more source

Regulation of Key Immune-Related Genes in the Heart Following Burn Injury

open access: yes, 2022
Immune cascade is one of major factors leading to cardiac dysfunction after burn injury. TLRs are a class of pattern-recognition receptors (PRRs) that initiate the innate immune response by sensing conserved molecular patterns for early immune ...
Radhakrishnan, Geetha L.   +7 more
core   +1 more source

Cytogenomic Integrative Network Analysis of the Critical Region Associated with Wolf-Hirschhorn Syndrome [PDF]

open access: yes, 2018
Deletions in the 4p16.3 region are associated with Wolf-Hirschhorn syndrome (WHS), a contiguous gene deletion syndrome involving variable size deletions. In this study, we perform a cytogenomic integrative analysis combining classical cytogenetic methods,
Mergener, Rafaella   +13 more
core   +1 more source

Exploiting Cell-Free Systems: Implementation and Debugging of a System of Biotransformations [PDF]

open access: yes, 2010
The orchestration of a multitude of enzyme catalysts allows cells to carry out complex and thermodynamically unfavorable chemical conversions. In an effort to recruit these advantages for in vitro biotransformations, we have assembled a 10-step catalytic
Billerbeck, Sonja,   +11 more
core   +1 more source

S-Adenosylhomocysteine hydrolase as a bottleneck in the biomimetic regeneration cycle of S-adenosylmethionine and its analogues

open access: yes, 2021
As a sustainable alternative for the synthesis of biologically active compounds enzymes are contributing to the growing field of green chemistry. A useful modification step is the introduction of a methyl group, which is catalysed by methyltransferases ...
Popadić, Désirée
core   +1 more source

Purification, Characterization, and Gene Cloning of Purine Nucleosidase from Ochrobactrum anthropi

open access: yes, 2001
A bacterium, Ochrobactrum anthropi , produced a large amount of a nucleosidase when cultivated with purine nucleosides. The nucleosidase was purified to homogeneity.
Jun Ogawa   +6 more
core   +1 more source

Context‐Dependent Chemoselectivity of Aromatic C‐Methyltransferases

open access: yesChemBioChem, Volume 27, Issue 8, April 2026.
Chemoselectivity is context‐dependent: The SAM‐dependent C‐MTs SfmM2 and NapB5 from streptomycetes catalyze the C‐ and/or O‐dimethylation of aromatic substrates, including l‐tyrosine and flavonoids. C‐methylation activity requires precise substrate recognition and positioning to ensure proximity between the target carbon nucleophile and the methyl ...
Juliane Breiltgens   +4 more
wiley   +1 more source

Biocatalytic Alkylation of Ambident Nucleophiles Enables Selective N‐Functionalization of Heterocycles and Late‐Stage Modifications

open access: yesAngewandte Chemie, Volume 137, Issue 36, September 1, 2025.
N‐alkylated heteroarenes are key structural motifs in bioactive compounds, but their regioselective synthesis via coupling of readily available azoles with haloalkanes remains very challenging. Here, we present a mild biocatalytic approach that proceeds on gram‐scale, is highly chemo‐ and regioselective, offering rapid access to valuable N‐alkylated ...
Felipe Ospina   +10 more
wiley   +2 more sources

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