Amino AcidsMagnetic Resonance SpectroscopyProtein Conformation"Pseudo-structures" of the 20 common amino acid residues are introduced for use in protein spatial structure determinations, which rely on the use of intramolecular proton-proton distance constraints determined by nuclear Overhauser effects as ...
In this work, the known bond lengths for amino acids and the peptide bond are similarly shown to be sums of the atomic covalent radii. Based on this result, the atomic structures of all the twenty essential amino acids and a tripeptide have been presented. 展开 ...
Cyanophycin is a natural biopolymer produced by a wide range of bacteria, consisting of a chain of poly-l-Asp residues with l-Arg residues attached to the β-carboxylate sidechains by isopeptide bonds. Cyanophycin is synthesized from ATP, aspartic acid and arginine by a homooligomeric enzyme ...
Zwitterionic conformers are predicted to be essentially as stable as the neutral ones and should be significantly populated; however, there is no evidence for these structures in the IRPD spectra. An exploration of the potential energy surface for the loss of chloride anion, the observed ...
Draw the structures of the cyclic dimers that could be formed from the a-amino acids valine and proline, shown below.COOH H_2N COOH 相关知识点: 试题来源: 解析 epun n wl A sd He dle ve "H\Jalon to trn lome to thn 000 chene fons, onk. hown s4d (A ...
Design of a heterocycle–spermine conjugate that inhibits the biogenesis of oncogenic miRNAs. Article CAS Google Scholar Turner, D. H. & Mathews, D. H. NNDB: the nearest neighbor parameter database for predicting stability of nucleic acid secondary structure. Nucleic Acids Res. 38, D280–D282...
of their vitellogenins including signal peptide,polyserine domain,N-linked glycosylation site and so on,high degree conservation of amino acids was found.Phylogenetic tree of the entire amino acid sequence of vitellogenin from the seven silk insects was constructed.The results showed that Philosamia ...
Selenocysteine is the only proteinogenic amino acid encoded by a recoded in-frame UGA codon that does not operate as the canonical opal stop codon. A specialized translation elongation factor, eEFSec in eukaryotes and SelB in prokaryotes, promotes seleno
We present X-ray crystal structures of the peptide-free state of HLA-A*02:01, together with structures that have dipeptides bound in the A and F pockets. These structural snapshots reveal that the amino acid side chains lining the binding pockets switch in a coordinated fashion between a ...
摘要: 1 Introduction The interaction of metal ions such as transition metal and rare earth metal with amino acids and peptide derivatives is of considerable interest as it often represents the role of metal ions in the en- zymes. Sulphonamides derived from ami...