5H1H image
Entry Detail
PDB ID:
5H1H
Keywords:
DE NOVO PROTEIN
Title:
NMR structure of SLBA, a chimera of SFTI
Biological Source:
Source Organism:
Helianthus annuus
PDB Version:
Deposition Date:
2016-10-10
Release Date:
2017-04-19
Method Details:
Experimental Method:
SOLUTION NMR
Conformers Calculated:
100
Conformers Submitted:
20
Selection Criteria:
structures with the lowest energy
5H1H validation report
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Bradykinin-trypsin inhibitor secondary loop chimera
Chain IDs:A
Chain Length:16
Number of Molecules:1
Biological Source:Helianthus annuus
Ligand Molecules
NA
Primary Citation
An Orally Active Bradykinin B1 Receptor Antagonist Engineered as a Bifunctional Chimera of Sunflower Trypsin Inhibitor.
J. Med. Chem. 60 504 510 (2017)
PMID: 27977181 DOI: 10.1021/acs.jmedchem.6b01011

Abstact

An orally active and metabolically stable peptide TIBA was successfully engineered as a chimera by fusing an analgesic bradykinin receptor antagonist peptide and the trypsin inhibitory loop of sunflower trypsin inhibitor-1. As a fusion cyclic peptide, the metabolically labile analgesic peptide is protected from degradation by exopeptidases as well as the endopeptidases, and its serum half-life extended from <5 min to >6 h as a chimera. Moreover, the chimera TIBA was also found to be orally active in an animal pain model using a hot plate assay.

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Primary Citation of related structures
5H1I