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Peptides and Covid-19

Save 20% on the COVID-19 Research Products Listed Below through June 19. Click on the links to go directly to the products:   Fmoc-NH-PEG4-Propionic Acid [557756-85-1] Boc-NH-PEG6-COOH (30 atoms) [600141-83-1] Boc-NH-PEG3-Propionic Acid [1347750-75-7]...

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Synthesizing Hydrophobic Peptides

Synthesizing hydrophobic peptides is often difficult.  Inter-chain hydrogen bonding in the hydrophobic regions causes poor solvation of the peptide chains and slowed reaction rates.  Measures to disrupt this hydrogen bonding often significantly improve the purity and...

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Hmb and Dmb Protected Derivatives

Fmoc-(Fmoc-Hmb)amino acids were introduced in the 1990s to improve synthetic yields of difficult peptides, such as amyloid β, that form aggregates during synthesis. It had been noted that tertiary amide bonds in a peptide sequence prevent interchain hydrogen bonding....

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PEG Linkers and PEGylation Reagents

Modifying a peptide to include polyethylene glycol (PEG) groups may improve solubility and bioavailability. Protein PEGylation can protect the protein from proteolytic degradation and increase its half-life in biological applications, decrease its antigenisity or...

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High Performance Peptide Synthesizers

High performance solid phase peptide synthesis of long or difficult peptides may require the utilization of special coupling reagents for specific residues within the peptide sequence. The Focus XC Series of high performance peptide synthesizers have the capacity and...

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Isoacyl Dipeptides

Isoacyl Dipeptides Isoacyl dipeptides are used to prepare depsipeptides in which the peptide chain is attached to the side chain oxygen atom of serine or threonine residues instead of the alpha nitrogen. Depsipeptides are less prone to aggregation than their standard...

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Adrenomedullin and Alzheimer’s Disease

Adrenomedullin Expression in Alzheimer's Brain AP Fernandez, JS Masa, MA Guedan, HS Futch, R Martínez-Murillo, Curr. Alzheimer Res., 2016, 13, 428-38. Adrenomedullin (AM) is a potent vasodilator peptide highly expressed throughout the brain and originally isolated...

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Endothelin 1 and Anxiety-Like Behaviors

Infralimbic Endothelin1 Is Critical for the Modulation of Anxiety-Like Behaviors. Bi LL, Chen M, Pei L, Shu S, Jin HJ, Yan HL, Wei N, Wang S, Yang X, Yan HH, Xu MM, Yao CY, Li N, Tang N, Wu JH, Zhu HZ, Li H, Cai Y, Guo Y, Shi Y, Tian Q, Zhu LQ, Lu YM, Mol...

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Design and Synthesis of Aphicidal Peptides

Eco-friendly Insecticide Discovery via Peptidomimetics: Design, Synthesis and Aphicidal Activity of Novel Insect Kinin Analogs Chuan-liang Zhang, Yanyan Qv, Xiaoqing Wu, Dunlun Song, Yun Ling, and Xinling Yang, J. Agric. Food Chem., Just Accepted Manuscript...

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Stereocontrolled Construction of (E)-2-Amino-2-butenamide

Solid-Phase Total Synthesis of Bogorol A: Stereocontrolled Construction of Thermodynamically Unfavored (E)-2-Amino-2-butenamide Tomoya Yamashita, Takefumi Kuranaga, and Masayuki Inoue, Org. Lett., Article ASAP  Publication Date (Web): April 13, 2015  Copyright © 2015...

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Macrocyclic peptide with an unusual Lys-Trp crosslink

Structure and biosynthesis of a macrocyclic peptide containing an unprecedented lysine-to-tryptophan crosslink Kelsey R. Schramma, Leah B. Bushin & Mohammad R. Seyedsayamdost, Nature Chemistry, 2015, 7, 431–437. Streptococcal bacteria use peptide signals as a...

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A potent peptide inhibitor of α-synuclein aggregation.

Intracellular screening of a peptide library to derive a potent peptide inhibitor of α-synuclein aggregation. Cheruvara H, Allen-Baume VL, Kad NM, Mason JM., J. Biol. Chem., 2015, First published on-line: January 23, 2015.  DOI: 10.1074/jbc.M114.620484 Aggregation of...

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