2ERM | pdb_00002erm

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

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	1 mM FGF-1 U-15N; 1 mM heparin-like hexasaccharide; 10mM sodium phosphate; 150 mM sodium chloride; 90% H2O, 10% D2O	90% H2O/10% D2O	150 mM NaCl	6.0	ambient	298
2	3D_15N-separated_NOESY	1 mM FGF-1 U-15N; 1 mM heparin-like hexasaccharide; 10mM sodium phosphate; 150 mM sodium chloride; 90% H2O, 10% D2O	90% H2O/10% D2O	150 mM NaCl	6.0	ambient	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	800
2	Varian	INOVA	750

NMR Refinement
Method	Details	Software
Simulated annealing, restrained molecular dynamics	The first six residues of the protein could not be assigned due to the disorder of the N-terminus region. These are shown as missing residues in remark 465 in all the models. The anomalous torsion angles observed for his 107 and glu 105 are also found in the related pdbs 1dzd and 1dzc of fgf-1. Most of the peptide bonds that deviate significantly from both cis and trans conformation, shown in remark 500, correspond to residues implicated in the binding of the ligand.	XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	30
Conformers Submitted Total Number	20
Representative Model	20 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	XwinNMR	3.2	Bruker
2	collection	VNMR	1.1d	Varian
3	data analysis	XEASY	1.3.13	Bartels C., Xia T., Billeter M., Guntert P., and Wuthrich K.
4	structure solution	DYANA	1.5	Guntert P., Mumenthaler C., and Wuthrich K.
5	refinement	Amber	5.0	Pearlman D.A., Case D.A., Caldwell J.W., Cheatham T.E., DeBolt S., Ross W.S., Ferguson D., Seibel G.L., and Kollman P.A.