Results 161 to 170 of about 2,195,556 (319)

On‐Resin Pictet–Spengler Cyclization for 1,2,3,4‐Tetrahydro‐β‐carboline‐3‐carboxylate (Tcc) Peptide Synthesis With Acid‐Labile Functional Tolerance

open access: yesJournal of Peptide Science, Volume 32, Issue 2, February 2026.
The constrained tryptophan (Trp) analog 1,2,3,4‐tetrahydro‐β‐carboline‐3‐carboxylic acid (Tcc) is used to restrict peptide conformation in structure–activity relationship studies. Although Pictet–Spengler cyclization of Trp and aldehydes with mineral acid gives Tcc analogs, such harsh conditions do not tolerate acid‐labile functionality.
Omer S. L. N'dri   +10 more
wiley   +1 more source

Xe Adsorption on Noble Metal Clusters: A Density Functional Theory Investigation

open access: yesACS Omega, 2021
Arnaud Monpezat   +2 more
doaj   +1 more source

Surfaces with DIF$\ne$DEF real structures [PDF]

open access: green, 2005
Viatcheslav Kharlamov   +1 more
openalex   +1 more source

The absence of both RIBC1 and RIBC2 induces decreased sperm motility and litter size in male mice

open access: yesAndrology, Volume 14, Issue 2, Page 545-554, February 2026.
Abstract Background RIBC1 (RIB43A domain with coiled‐coils 1) and RIBC2 (RIB43A domain with coiled‐coils 2) are homolog proteins of RIB43a which is localized to microtubules in the cilia and flagella of unicellular organisms. Cryo‐electron microscopy and artificial intelligence studies showed that RIBC1 and RIBC2 are microtubule inner proteins (MIPs ...
Kento Katsuma   +7 more
wiley   +1 more source

Differential item functioning (DIF) of SF-12 and Q-LES-Q-SF items among french substance users [PDF]

open access: gold, 2015
Stéphanie Bourion-Bédès   +5 more
openalex   +1 more source

Is the Treatment Weak or the Test Insensitive? Interrogating the Nature of Treatment Effects on Standardized Tests

open access: yesMind, Brain, and Education, Volume 20, Issue 1, February 2026.
ABSTRACT A general consensus exists that disabilities are harder to treat in older students and improvements are harder to demonstrate on standardized tests. This study used advanced psychometric modeling and computer simulation to examine factors affecting the sensitivity of the Gates‐MacGinitie Reading Test to intervention effects in low ability ...
David J. Francis, Paulina A. Kulesz
wiley   +1 more source

O2‐Aktivierung an einem enzymatischen diFe‐Zentrum: Brückenligand‐Substitutionen ändern die Fe(II)/Fe(II) (Hydro)peroxo‐Bindung

open access: yesAngewandte Chemie, Volume 138, Issue 5, 28 January 2026.
Durch Austausch der verbrückenden Carboxylate in DiFe‐Suleythrin wird die Koordination des Brückenliganden von 1,3‐Carboxylat zu 1,1‐Carboxylat verschoben, wodurch alle drei diFe(II)‐Koordinationsmotive in einem Protein entstehen. Dies verkürzt den Fe‐Fe‐Abstand und erhöht die Reaktivität mit O2.
Jae‐Hun Jeoung   +6 more
wiley   +1 more source

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