𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Combined solid-phase and solution approach for the synthesis of large peptides or proteins

✍ Scribed by Yuji Nishiuchi; Hideki Nishio; Tatsuya Inui; József Bódi; Terutoshi Kimura


Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
126 KB
Volume
6
Category
Article
ISSN
1075-2617

No coin nor oath required. For personal study only.

✦ Synopsis


In the synthesis of large peptides or proteins, highly homogeneous segments are indispensable for a convergent strategy either on a solid-phase resin or in solution. Employing Boc/Bzl chemistry to prepare fully protected segments with a free h-carboxyl group from the solid support, base-labile linkers are profitable for practical peptide synthesis since they require no special equipment. For this purpose, an N-[9-(hydroxymethyl)-2-fluorenyl]succinamic acid (HMFS) linker was adopted. Consequently, there must be high compatibility between the protecting groups of the segment and the anchoring group which is cleavable by treatment with morpholine or piperidine in DMF. Instead of using the 2-bromobenzyloxycarbonyl (BrZ) group for the Tyr residue and the formyl (For) group for the Trp residue, both of which are the most susceptible protecting groups under these base-catalysed conditions, the base-resistant 3-pentyl (Pen) and cyclohexyloxycarbonyl (Hoc) groups were introduced to the respective side-chain functional groups. By applying the present strategy, the authors were able to rapidly synthesize homogeneous protected segments for use in the subsequent segment coupling in solution. In the present paper, the utility of the combined solid-phase and solution approach is demonstrated by synthesizing muscarinic toxin 1 (MTX1) which binds to the muscarinic acetylcholine receptors.


📜 SIMILAR VOLUMES


Solid-phase synthesis and cyclization of
✍ Joseph M. Sheridan; Gillian M. Hayes; Brian M. Austen 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 162 KB 👁 1 views

A solid phase approach has been used to synthesize a large branched disulphide peptide from IgG Fc, Ac- This peptide combines the lower hinge region of IgG and a proximal i-hairpin loop, both implicated in binding to FckRI. Solid phase Tl(tfa) 3 cyclization of the linear branched peptide resulted i

Large-scale production of peptides using
✍ Valerio Caciagli; Franco Cardinali; Andre Hänsicke; Gisbert Tuchalski; Paolo Lom 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 109 KB 👁 1 views

The large-scale solid-phase continuous flow synthesis of the bicyclic peptide MEN 10627, a new potent Neurokinin A receptor antagonist, is described using the Fmoc-polyamide method on both Macrosorb 125 and Macrosorb 250 resin. A new synthesizer designed in-house was realized by assembling Whitey va