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The supramolecular assembly of C3-peptides carrying glycine-cysteine (Gly-Cys) dipeptide pendants into helical fibers is described. A Gly-Cys dipeptide sequence was selected to ensure the chirality, and at the same time, to provide a chance to crosslink the structure through oxidation of the thiol into dynamic covalent disulfide, and transfer supramolecular helical fibers into covalent ones. Supramolecular assembly in aprotic solvents affords long helical fibers with left-handedness, which can be stabilized through formation of disulfide. Transformation of supramolecular helical fibers into covalent ones was examined by NMR and FTIR spectroscopies as well as atom force microscopy.
This article was published in the following journal.
Name: Chemistry, an Asian journal
Hydrogels induced by two-component gelator isomers based on the different amine/acid interactions were investigated. Scanning electron microscopy and atomic force microscopy images of the xerogel obta...
Peptide self-assembly represents a powerful bottom-up approach to the fabrication of new nanomaterials. β3-peptides are non-natural peptides composed entirely of β-amino acids, which have an extra m...
Macroscopic enantiomerically pure helical supramolecular fibers are bottom-up assembled in aqueous media from a chiral -electron donor template and an achiral -electron acceptor. The helices can be as...
Antimicrobial peptides (AMPs) are short cationic peptides with a high affinity for membranes and emerged as a promising therapeutic approach with potential for treating infectious diseases. Chemical s...
This report focuses on the synthesis of an N-terminus 1,2-dithiolane modified self-assembling peptide and the characterization of the resulting self-assembled supramolecular structures. The synthetic ...
This study evaluates whether whole blood transferred through the new POLFA needle assembly meets supernatant hemoglobin acceptability standards.
To assess the safety and efficacy of a single fraction of radiotherapy using helical tomotherapy to treat bone metastases.
The aim of this study is to survey melanocytes in the ability of self-assembly on biomaterials and functional analysis in vitro. Also, this study may provide a better way for treatment of ...
The purpose of this study is to determine the safety and effectiveness of administering WT1 cancer peptides. Cancer peptides are short pieces of protein that are made in a laboratory to b...
Open-label single center study. Patients will be divided in four groups of 7. Group 1: 8 melanoma-specific peptides in saline; Group 2: same mix of peptides + Montanide ISA51; Group 3: sam...
A class of nerve fibers as defined by their structure, specifically the nerve sheath arrangement. The AXONS of the myelinated nerve fibers are completely encased in a MYELIN SHEATH. They are fibers of relatively large and varied diameters. Their NEURAL CONDUCTION rates are faster than those of the unmyelinated nerve fibers (NERVE FIBERS, UNMYELINATED). Myelinated nerve fibers are present in somatic and autonomic nerves.
An IgG autoantibody against the ALTERNATIVE PATHWAY C3 CONVERTASE, found in serum of patients with MESANGIOCAPILLARY GLOMERULONEPHRITIS. The binding of this autoantibody to C3bBb stabilizes the enzyme thus reduces the actions of C3b inactivators (COMPLEMENT FACTOR H; COMPLEMENT FACTOR I). This abnormally stabilized enzyme induces a continuous COMPLEMENT ACTIVATION and generation of C3b thereby promoting the assembly of MEMBRANE ATTACK COMPLEX and cytolysis.
Complement activation initiated by the interaction of microbial ANTIGENS with COMPLEMENT C3B. When COMPLEMENT FACTOR B binds to the membrane-bound C3b, COMPLEMENT FACTOR D cleaves it to form alternative C3 CONVERTASE (C3BBB) which, stabilized by COMPLEMENT FACTOR P, is able to cleave multiple COMPLEMENT C3 to form alternative C5 CONVERTASE (C3BBB3B) leading to cleavage of COMPLEMENT C5 and the assembly of COMPLEMENT MEMBRANE ATTACK COMPLEX.
One of the three major groups of endogenous opioid peptides. They are large peptides derived from the PRO-OPIOMELANOCORTIN precursor. The known members of this group are alpha-, beta-, and gamma-endorphin. The term endorphin is also sometimes used to refer to all opioid peptides, but the narrower sense is used here; OPIOID PEPTIDES is used for the broader group.
A fibrillin (FBN2) that functions to regulate the assembly of ELASTIC FIBERS. Mutations in the FBN2 gene are associated with congenital contractural ARACHNODACTYLY.