Results 71 to 80 of about 166,609 (297)

Selection of antibody-binding covalent aptamers

open access: yesCommunications Chemistry
Aptamers are oligonucleotides with antibody-like binding function, selected from large combinatorial libraries. In this study, we modified a DNA aptamer library with N-hydroxysuccinimide esters, enabling covalent conjugation with cognate proteins.
Noah Soxpollard   +3 more
doaj   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

open access: yesFEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Postsynthetic Covalent Modification of a Neutral Metal−Organic Framework

open access: yes, 2016
The covalent modification of the metal−organic framework IRMOF-3 has been achieved using acetic anhydride. Mass spectrometry and 1H NMR evidence shows that the free amine groups in IRMOF-3 are converted to amides in high yields. Control experiments and X-
Zhenqiang Wang (1459963)   +1 more
core   +2 more sources

Covalent Modification of Bacteriophage T4 DNA Inhibits CRISPR-Cas9

open access: yesmBio, 2015
The genomic DNAs of tailed bacteriophages are commonly modified by the attachment of chemical groups. Some forms of DNA modification are known to protect phage DNA from cleavage by restriction enzymes, but others are of unknown function.
Alexandra L. Bryson   +7 more
doaj   +1 more source

Mass spectrometry based identification of AMP‐O‐Tris generated by Thermococcus onnurineus Cas10

open access: yesFEBS Open Bio, EarlyView.
Isolated Thermococcus onnurineus Cas10 generates the noncanonical ATP‐derived product AMP‐O‐Tris while in Tris‐containing buffer as identified via mass spectrometry, revealing relaxed nucleophile selectivity under isolated conditions. These findings suggest that multiprotein Csm complex assembly restricts Cas10 reactivity toward canonical cyclic ...
Su‐Jin Lee   +6 more
wiley   +1 more source

UiO‐66 metal–organic frameworks in biomedicine: From structural tunability to bioimaging, photodiagnostics, and photodynamic cancer therapy

open access: yesFEBS Open Bio, EarlyView.
UiO‐66(Zr) metal–organic frameworks are chemically stable, biocompatible, and highly tunable nanomaterials. Their modular structure enables controlled drug delivery, multimodal bioimaging, and light‐activated photodynamic therapy, supporting integrated diagnostic and therapeutic (theranostic) applications in cancer and biomedical research.
Veronika Huntošová   +2 more
wiley   +1 more source

Deciphering the phosphorylation of chitosan through complementary 1H and 31P{1H} DOSY NMR

open access: yesCarbohydrate Polymer Technologies and Applications
Chemical modification of chitosan through phosphorylation has gained significant attention for expanding its applications. However, confirming whether phosphorylating agents form covalent bonds with the chitosan backbone or remain as non-covalently ...
Souhaib Abouricha   +8 more
doaj   +1 more source

Covalent-Fragment Screening of Brd4 Identifies a Ligandable Site Orthogonal to the Acetyl-Lysine Binding Sites

open access: yes, 2019
Brd4, a member of the bromodomain and extraterminal domain (BET) family, has emerged as a promising epigenetic target in cancer and inflammatory disorders.
Michael Olp (6944188)   +5 more
core   +1 more source

Selective Covalent Targeting of SARS-CoV-2 Main Protease by Enantiopure Chlorofluoroacetamide

open access: yes, 2021
The pandemic of COVID-2019 has urged the development of antiviral agents against its causative pathogen SARS-CoV-2. The main protease (Mpro), a cysteine protease essential for viral replication, is a promising protein target.
Rui, Hamada   +9 more
core   +1 more source

Rho GTPase regulation by miRNAs and covalent modifications [PDF]

open access: yesTrends in Cell Biology, 2012
To date, most studies of Rho GTPase regulation have focused on the classic GTPase cycle - GTP binding and hydrolysis - controlled by guanine nucleotide exchange factors (GEFs), GTPase-activating proteins (GAPs) and GDP-dissociation inhibitors (GDIs).
Ming, Liu   +3 more
openaire   +2 more sources

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