1SDB image
Deposition Date 1996-01-29
Release Date 1997-02-12
Last Version Date 2024-10-23
Entry Detail
PDB ID:
1SDB
Keywords:
HORMONE
Title:
PORCINE DESB1-2 DESPENTAPEPTIDE(B26-B30) INSULIN
Biological Source:
Source Organism:
Sus scrofa (Taxon ID: 9823)
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
1.65 Å
R-Value Free:
0.22
R-Value Work:
0.20
Space Group:
P 1 21 1
1SDB validation report
Macromolecular Entities
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:DESB1-2 DESPENTAPEPTIDE (B26-B30) INSULIN
Gene (Uniprot):INS
Chain IDs:A
Chain Length:21
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:P01315
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:DESB1-2 DESPENTAPEPTIDE (B26-B30) INSULIN
Gene (Uniprot):INS
Chain IDs:B
Chain Length:23
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:P01315
Primary Citation
Structure of monomeric porcine DesB1-B2 despentapeptide (B26-B30) insulin at 1.65 A resolution.
Acta Crystallogr.,Sect.D 53 507 512 (1997)
PMID: 15299880 DOI: 10.1107/S0907444997004034

Abstact

Insulin has a concentration of 10(-8)-10(-11) M in the blood which ensures that it circulates and exerts its physiological functions in vivo as a monomer. The crystal structure of monomeric porcine desB1-B2 despentapeptide (B26-B30) insulin (DesB1-2 DPI) with M(r) = 4934 Da has been determined at 1.65 A resolution using the molecular replacement method. A structural comparison between DesB1-2 DPI and 2Zn insulin reveals that the conformation of DesB1-2 DPI is more similar to molecule I than molecule II of 2Zn insulin. The remarkable conformational difference between B25-Phe in DesB1-2 DPI and B25-Phe in despentapeptide (B26-B30) insulin (DPI) indicates that the residue B25-Phe possesses great flexibility and mobility.

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Primary Citation of related structures
1SDB