ISDA

Deposition Date 2005-10-25

Release Date 2006-10-03

Last Version Date 2024-05-01

Entry Detail

PDB ID:

2ERM

Keywords:

HORMONE/GROWTH FACTOR

Title:

Solution structure of a biologically active human FGF-1 monomer, complexed to a hexasaccharide heparin-analogue

Biological Source:

Source Organism:

Homo sapiens (Taxon ID: 9606)

Host Organism:

Escherichia coli BL21(DE3)

Method Details:

Experimental Method:

SOLUTION NMR

Conformers Calculated:

Conformers Submitted:

Selection Criteria:

structures with the lowest energy

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Heparin-binding growth factor 1
Gene (Uniprot):FGF1
Chain IDs:A
Chain Length:139
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:P05230 Pfam ID:PF00167

Ligand Molecules

IPA

Primary Citation

Solution NMR structure of a human FGF-1 monomer, activated by a hexasaccharide heparin-analogue.

Canales, A, Lozano, R, Lopez-Mendez, B, Angulo, J, Ojeda, R, Nieto, P.M, Martin-Lomas, M, Gimenez-Gallego, G, Jimenez-Barbero, J, Lozano, R.M, Pineda-Lucena, A, Gonzalez, C, Jimenez, M.A, Cuevas, P, Redondo-Horcajo, M, Sanz, J.M, Rico, M, Gimenez-Gallego, G, Fernandez-Tornero, C, Lozano, R.M, Redondo-Horcajo, M, Gomez, A, Lopez, J, Uriel, C, Valverde, S, Cuevas, P, Romero, A, Gimenez-Gallego, G, Bernett, M.J, Somasundaram, T, Blaber, M, DiGabriele, A.D, Lax, I, Chen, D.I, Svahn, C.M, Jaye, M, Schlessinger, J, Hendrickson, W.A.Show

Febs J. 273 4716 4727 (2006)

PMID: 16995857 DOI: 10.1111/j.1742-4658.2006.05474.x

Abstact

The 3D structure of a complex formed by the acidic fibroblast growth factor (FGF-1) and a specifically designed synthetic heparin hexasaccharide has been determined by NMR spectroscopy. This hexasaccharide can substitute natural heparins in FGF-1 mitogenesis assays, in spite of not inducing any apparent dimerization of the growth factor. The use of this well defined synthetic heparin analogue has allowed us to perform a detailed NMR structural analysis of the heparin-FGF interaction, overcoming the limitations of NMR to deal with the high molecular mass and heterogeneity of the FGF-1 oligomers formed in the presence of natural heparin fragments. Our results confirm that glycosaminoglycans induced FGF-1 dimerization either in a cis or trans disposition with respect to the heparin chain is not an absolute requirement for biological activity.

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