ISDA: 3X00

Deposition Date 2014-10-09

Release Date 2015-01-21

Last Version Date 2023-11-08

Entry Detail

PDB ID:

3X00

Keywords:

BIOTIN BINDING PROTEIN

Title:

Crystal structure of the core streptavidin mutant V212 (Y22S/N23D/S27D/S45N/Y83S/R84K/E101D/R103K/E116N) complexed with bis iminobiotin long tail (Bis-IMNtail) at 1.3 A resolution

Biological Source:

Source Organism:

Streptomyces avidinii (Taxon ID: 1895)

Host Organism:

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.30 Å

R-Value Free:

0.18

R-Value Work:

0.14

R-Value Observed:

0.14

Space Group:

C 2 2 21

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Streptavidin
Mutagens:Y22S/N23D/S27D/S45N/Y83S/R84K/E101D/R103K/E116N
Chain IDs:A, B, C, D
Chain Length:147
Number of Molecules:4
Biological Source:Streptomyces avidinii

UniProt ID:P22629 Pfam ID:PF01382

Ligand Molecules

EDN

ZOF

Primary Citation

Structure-based design and synthesis of a bivalent iminobiotin analog showing strong affinity toward a low immunogenic streptavidin mutant.

Kawato, T, Mizohata, E, Shimizu, Y, Meshizuka, T, Yamamoto, T, Takasu, N, Matsuoka, M, Matsumura, H, Kodama, T, Kanai, M, Doi, H, Inoue, T, Sugiyama, A.Show

Biosci.Biotechnol.Biochem. 79 640 642 (2015)

PMID: 25560769 DOI: 10.1080/09168451.2014.991692

Abstact

The streptavidin/biotin interaction has been widely used as a useful tool in research fields. For application to a pre-targeting system, we previously developed a streptavidin mutant that binds to an iminobiotin analog while abolishing affinity for natural biocytin. Here, we design a bivalent iminobiotin analog that shows 1000-fold higher affinity than before, and determine its crystal structure complexed with the mutant protein.

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Primary Citation of related structures