Download MendeleyDimerization Effect of Sucrose Octasulfate on Rat Fgf1.
Kulahin, N., Kiselyov, V., Kochoyan, A., Kristensen, O., Kastrup, J.S., Berezin, V., Bock, E., Gajhede, M.(2008) Acta Crystallogr Sect F Struct Biol Cryst Commun 64: 448
- PubMed: 18540049
- DOI: https://doi.org/10.1107/S174430910801066X
- Primary Citation of Related Structures:
2UUS - PubMed Abstract:
Fibroblast growth factors (FGFs) constitute a family of at least 23 structurally related heparin-binding proteins that are involved in regulation of cell growth, survival, differentiation and migration. Sucrose octasulfate (SOS), a chemical analogue of heparin, has been demonstrated to activate FGF signalling pathways. The structure of rat FGF1 crystallized in the presence of SOS has been determined at 2.2 A resolution. SOS-mediated dimerization of FGF1 was observed, which was further supported by gel-filtration experiments. The major contributors to the sulfate-binding sites in rat FGF1 are Lys113, Lys118, Arg122 and Lys128. An arginine at position 116 is a consensus residue in mammalian FGF molecules; however, it is a serine in rat FGF1. This difference may be important for SOS-mediated FGF1 dimerization in rat.
Organizational Affiliation:
Protein Laboratory, Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark. kulahin@plab.ku.dk
