Calcium in PDB 7vlc: Oxy-Deoxy Intermediate of V2 Hemoglobin at 78% Oxygen Saturation

The structure of Oxy-Deoxy Intermediate of V2 Hemoglobin at 78% Oxygen Saturation, PDB code: 7vlc was solved by N.Numoto, S.Onoda, Y.Kawano, H.Okumura, S.Baba, Y.Fukumori, K.Miki, N.Ito, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	47.62 / 2.20
Space group	P 63
Cell size a, b, c (Å), α, β, γ (°)	109.192, 109.192, 194.737, 90, 90, 120
R / Rfree (%)	19.8 / 24.2

The structure of Oxy-Deoxy Intermediate of V2 Hemoglobin at 78% Oxygen Saturation also contains other interesting chemical elements:

Iron

(Fe)

8 atoms

The binding sites of Calcium atom in the Oxy-Deoxy Intermediate of V2 Hemoglobin at 78% Oxygen Saturation (pdb code 7vlc). This binding sites where shown within 5.0 Angstroms radius around Calcium atom.
In total 2 binding sites of Calcium where determined in the Oxy-Deoxy Intermediate of V2 Hemoglobin at 78% Oxygen Saturation, PDB code: 7vlc:
Jump to Calcium binding site number: 1; 2;

Calcium binding site 1 out of 2 in the Oxy-Deoxy Intermediate of V2 Hemoglobin at 78% Oxygen Saturation


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 1 of Oxy-Deoxy Intermediate of V2 Hemoglobin at 78% Oxygen Saturation within 5.0Å range: probe atom residue distance (Å) B Occ B:Ca203 b:61.5 occ:1.00 OD1 B:ASP135 2.3 53.6 1.0 OD1 B:ASN106 2.3 58.9 1.0 O B:HOH318 2.4 51.2 1.0 OE2 B:GLU109 2.5 58.7 1.0 OE1 B:GLU109 2.6 64.2 1.0 CD B:GLU109 2.9 59.0 1.0 CG B:ASN106 3.3 66.6 1.0 CG B:ASP135 3.5 55.5 1.0 ND2 B:ASN106 4.0 58.0 1.0 NE2 B:GLN131 4.0 51.9 1.0 OD2 B:ASP135 4.2 48.9 1.0 CG B:GLU109 4.3 58.2 1.0 OG1 B:THR138 4.4 50.9 1.0 CB B:ASN106 4.4 59.6 1.0 CB B:ASP135 4.5 48.0 1.0 CA B:ASP135 4.5 54.7 1.0 CA B:ASN106 4.7 59.7 1.0 CB B:GLU109 4.9 60.4 1.0

Calcium binding site 2 out of 2 in the Oxy-Deoxy Intermediate of V2 Hemoglobin at 78% Oxygen Saturation


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 2 of Oxy-Deoxy Intermediate of V2 Hemoglobin at 78% Oxygen Saturation within 5.0Å range: probe atom residue distance (Å) B Occ F:Ca203 b:56.1 occ:1.00 OD1 F:ASP135 2.4 48.8 1.0 O F:HOH354 2.4 54.2 1.0 O F:HOH337 2.4 49.8 1.0 OD1 F:ASN106 2.4 59.2 1.0 OE1 F:GLU109 2.4 56.2 1.0 O F:HOH344 2.4 59.4 1.0 OE2 F:GLU109 2.6 53.8 1.0 CD F:GLU109 2.8 49.5 1.0 O F:HOH345 3.3 58.0 1.0 CG F:ASN106 3.5 59.0 1.0 CG F:ASP135 3.6 45.0 1.0 OE1 F:GLN131 3.9 56.5 1.0 OD2 F:ASP135 4.2 47.0 1.0 ND2 F:ASN106 4.3 52.9 1.0 CG F:GLU109 4.3 55.2 1.0 OG1 F:THR138 4.3 49.1 1.0 CB F:ASN106 4.5 52.5 1.0 CA F:ASN106 4.6 50.3 1.0 CB F:ASP135 4.6 48.4 1.0 CA F:ASP135 4.7 52.0 1.0 CD F:GLN131 4.9 56.0 1.0

N.Numoto, S.Onoda, Y.Kawano, H.Okumura, S.Baba, Y.Fukumori, K.Miki, N.Ito. Structures of Oxygen Dissociation Intermediates of 400 kDa V2 Hemoglobin Provide Coarse Snapshots of the Protein Allostery. Biophys Physicobio. V. 19 1 2022.
ISSN: ESSN 2189-4779
PubMed: 35797404
DOI: 10.2142/BIOPHYSICO.BPPB-V19.0019