7W8H image
Deposition Date 2021-12-07
Release Date 2022-12-07
Last Version Date 2024-10-09
Entry Detail
PDB ID:
7W8H
Keywords:
PLANT PROTEIN
Title:
Sweet taste protein Brazzein mutant - D29K
Biological Source:
Source Organism:
Pentadiplandra brazzeana (Taxon ID: 43545)
Host Organism:
Escherichia coli BL21(DE3)
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
1.50 Å
R-Value Free:
0.26
R-Value Work:
0.23
R-Value Observed:
0.23
Space Group:
P 31
7W8H validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Defensin-like protein
Mutations:D29K
Chain IDs:A, B, C, E, F, G, H
Chain Length:54
Number of Molecules:7
Biological Source:Pentadiplandra brazzeana
UniProt ID:P56552
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Defensin-like protein
Mutations:D29K
Chain IDs:D
Chain Length:54
Number of Molecules:1
Biological Source:Pentadiplandra brazzeana
UniProt ID:P56552
Primary Citation
Brazzein, a new high-potency thermostable sweet protein from Pentadiplandra brazzeana B.
FEBS Lett 355 106 108 (1994)
PMID: 7957951 DOI: 10.1016/0014-5793(94)01184-2

Abstact

We have discovered a new high-potency thermostable sweet protein, which we name brazzein, in a wild African plant Pentadiplandra brazzeana Baillon. Brazzein is 2,000 times sweeter than sucrose in comparison to 2% sucrose aqueous solution and 500 times in comparison to 10% of the sugar. Its taste is more similar to sucrose than that of thaumatin. Its sweetness is not destroyed by 80 degrees C for 4 h. Brazzein is comprised of 54 amino acid residues, corresponding to a molecular mass of 6,473 Da.

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Chemical

Disease

Primary Citation of related structures
7W8H