ISDA

Deposition Date 2011-08-09

Release Date 2012-06-06

Last Version Date 2024-11-20

Entry Detail

PDB ID:

3ZXB

Keywords:

SIGNALING

Title:

Wild type single insulin-like growth factor binding domain protein (SIBD-1) from Cupiennius salei

Biological Source:

Source Organism:

CUPIENNIUS SALEI (Taxon ID: 6928)

Host Organism:

ESCHERICHIA COLI

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.55 Å

R-Value Free:

0.25

R-Value Work:

0.22

R-Value Observed:

0.22

Space Group:

P 32 2 1

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:SINGLE INSULIN-LIKE GROWTH FACTOR-BINDING DOMAIN PROTEIN-1
Chain IDs:A, B, C, D
Chain Length:78
Number of Molecules:4
Biological Source:CUPIENNIUS SALEI

UniProt ID:G4V4F9

Primary Citation

Structural and Biochemical Characterization of Native and Recombinant Single Insulin-Like Growth Factor-Binding Domain Protein (Sibd-1) from the Central American Hunting Spider Cupiennius Salei (Ctenidae).

Trachsel, C, Widmer, C, Kampfer, U, Buhr, C, Baumann, T, Kuhn-Nentwig, L, Schurch, S, Schaller, J, Baumann, U.Show

Proteins 80 2323 ? (2012)

PMID: 22622866 DOI: 10.1002/PROT.24119

Abstact

Cupiennius salei single insulin-like growth factor binding domain protein (SIBD-1) is an 8.6 kDa Cys-, Pro-, and Gly-rich protein, discovered in the hemocytes of the Central American hunting spider Cupiennius salei. SIBD-1 exhibits high sequence similarity to the N-terminal domain of the insulin-like growth factor-binding protein superfamily and has been reported to play an important role in the spider's immune system. Here, the recombinant expression and the elucidation of the three-dimensional structure of recombinant SIBD-1 and the characterization of the sugar moiety at Thr2 of native SIBD-1 is described in detail.

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Primary Citation of related structures