Iron in PDB 4np1: Nitrophorin 1 Complex with Nitric Oxide

The structure of Nitrophorin 1 Complex with Nitric Oxide, PDB code: 4np1 was solved by A.Weichsel, J.F.Andersen, F.A.Walker, W.R.Montfort, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	15.00 / 2.30
Space group	P 1 21 1
Cell size a, b, c (Å), α, β, γ (°)	39.410, 74.290, 66.120, 90.00, 99.19, 90.00
R / Rfree (%)	19 / 30

The binding sites of Iron atom in the Nitrophorin 1 Complex with Nitric Oxide (pdb code 4np1). This binding sites where shown within 5.0 Angstroms radius around Iron atom.
In total 2 binding sites of Iron where determined in the Nitrophorin 1 Complex with Nitric Oxide, PDB code: 4np1:
Jump to Iron binding site number: 1; 2;

Iron binding site 1 out of 2 in the Nitrophorin 1 Complex with Nitric Oxide


Mono view


Stereo pair view

A full contact list of Iron with other atoms in the Fe binding site number 1 of Nitrophorin 1 Complex with Nitric Oxide within 5.0Å range: probe atom residue distance (Å) B Occ A:Fe185 b:25.8 occ:1.00 FE A:HEM185 0.0 25.8 1.0 NA A:HEM185 2.0 20.9 1.0 NC A:HEM185 2.0 22.8 1.0 NB A:HEM185 2.0 25.1 1.0 ND A:HEM185 2.0 26.9 1.0 N A:NO186 2.1 21.6 1.0 NE2 A:HIS59 2.1 21.4 1.0 O A:NO186 3.0 29.1 1.0 C4B A:HEM185 3.0 23.5 1.0 C1A A:HEM185 3.0 21.6 1.0 C1C A:HEM185 3.0 23.5 1.0 CE1 A:HIS59 3.0 16.5 1.0 C4A A:HEM185 3.0 21.6 1.0 C4D A:HEM185 3.1 24.4 1.0 C4C A:HEM185 3.1 28.8 1.0 C1B A:HEM185 3.1 23.5 1.0 C1D A:HEM185 3.1 26.3 1.0 CD2 A:HIS59 3.2 12.6 1.0 CHC A:HEM185 3.4 23.1 1.0 CHA A:HEM185 3.4 20.2 1.0 CHB A:HEM185 3.5 23.9 1.0 CHD A:HEM185 3.5 26.8 1.0 ND1 A:HIS59 4.2 17.8 1.0 C3B A:HEM185 4.2 21.6 1.0 C3A A:HEM185 4.3 17.0 1.0 C3D A:HEM185 4.3 28.6 1.0 C2C A:HEM185 4.3 25.7 1.0 C2A A:HEM185 4.3 23.5 1.0 C2B A:HEM185 4.3 19.0 1.0 CG A:HIS59 4.3 18.3 1.0 C3C A:HEM185 4.3 27.8 1.0 C2D A:HEM185 4.3 26.3 1.0 CD2 A:LEU123 4.9 18.1 1.0

Iron binding site 2 out of 2 in the Nitrophorin 1 Complex with Nitric Oxide


Mono view


Stereo pair view

A full contact list of Iron with other atoms in the Fe binding site number 2 of Nitrophorin 1 Complex with Nitric Oxide within 5.0Å range: probe atom residue distance (Å) B Occ B:Fe185 b:26.6 occ:1.00 FE B:HEM185 0.0 26.6 1.0 ND B:HEM185 1.9 27.6 1.0 NC B:HEM185 2.0 28.1 1.0 NA B:HEM185 2.0 25.7 1.0 NB B:HEM185 2.0 28.7 1.0 NE2 B:HIS59 2.0 20.0 1.0 N B:NO186 2.0 26.9 1.0 CE1 B:HIS59 2.9 18.4 1.0 C4D B:HEM185 3.0 27.5 1.0 C1C B:HEM185 3.0 25.3 1.0 C1A B:HEM185 3.0 25.4 1.0 C1D B:HEM185 3.0 30.5 1.0 C4B B:HEM185 3.0 25.3 1.0 C4A B:HEM185 3.1 28.7 1.0 C4C B:HEM185 3.1 32.9 1.0 C1B B:HEM185 3.1 28.2 1.0 CD2 B:HIS59 3.1 16.4 1.0 O B:NO186 3.2 31.7 1.0 CHC B:HEM185 3.4 22.4 1.0 CHA B:HEM185 3.4 25.2 1.0 CHD B:HEM185 3.5 30.2 1.0 CHB B:HEM185 3.5 30.0 1.0 ND1 B:HIS59 4.0 18.9 1.0 CG B:HIS59 4.2 18.9 1.0 C3D B:HEM185 4.2 34.1 1.0 C2D B:HEM185 4.2 30.7 1.0 C3B B:HEM185 4.3 24.7 1.0 C2A B:HEM185 4.3 28.6 1.0 C2C B:HEM185 4.3 30.1 1.0 C3A B:HEM185 4.3 27.4 1.0 C2B B:HEM185 4.4 23.1 1.0 C3C B:HEM185 4.4 33.1 1.0

X.D.Ding, A.Weichsel, J.F.Andersen, T.Kh.Shokhireva, C.Balfour, A.Pierik, B.A.Averill, W.R.Montfort, F.A.Walker. Nitric Oxide Binding to the Ferri-and Ferroheme States of Nitrophorin 1, A Reversible No-Binding Heme Protein From the Saliva of the Blood-Sucking Insect, Rhodnius Prolixus To Be Published.