2F2I
Solution structure of [P20D,V21K]-kalata B1
Summary for 2F2I
| Entry DOI | 10.2210/pdb2f2i/pdb |
| Related | 2F2J |
| Descriptor | Kalata-B1 (1 entity in total) |
| Functional Keywords | cystine knot, circular backbone, beta-hairpin, antimicrobial protein |
| Total number of polymer chains | 1 |
| Total formula weight | 2965.37 |
| Authors | Clark, R.J.,Daly, N.L.,Craik, D.J. (deposition date: 2005-11-17, release date: 2006-01-31, Last modification date: 2021-11-10) |
| Primary citation | Clark, R.J.,Daly, N.L.,Craik, D.J. Structural plasticity of the cyclic cystine knot framework: implications for biological activity and drug design Biochem.J., 394:85-93, 2006 Cited by PubMed Abstract: The cyclotide family of plant proteins is of interest because of their unique topology, which combines a head-to-tail cyclic backbone with an embedded cystine knot, and because their remarkable chemical and biological properties make them ideal candidates as grafting templates for biologically active peptide epitopes. The present study describes the first steps towards exploiting the cyclotide framework by synthesizing and structurally characterizing two grafted analogues of the cyclotide kalata B1. The modified peptides have polar or charged residues substituted for residues that form part of a surface-exposed hydrophobic patch that plays a significant role in the folding and biological activity of kalata B1. Both analogues retain the native cyclotide fold, but lack the undesired haemolytic activity of their parent molecule, kalata B1. This finding confirms the tolerance of the cyclotide framework to residue substitutions and opens up possibilities for the substitution of biologically active peptide epitopes into the framework. PubMed: 16300479DOI: 10.1042/BJ20051691 PDB entries with the same primary citation |
| Experimental method | SOLUTION NMR |
Structure validation
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