Calcium in PDB 2if7: Crystal Structure of Ntb-A

The structure of Crystal Structure of Ntb-A, PDB code: 2if7 was solved by E.Cao, U.A.Ramagopal, A.A.Fedorov, E.V.Fedorov, S.G.Nathenson, S.C.Almo, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	40.00 / 3.00
Space group	C 1 2 1
Cell size a, b, c (Å), α, β, γ (°)	121.196, 148.452, 86.572, 90.00, 112.86, 90.00
R / Rfree (%)	21.3 / 26.6

The structure of Crystal Structure of Ntb-A also contains other interesting chemical elements:

Chlorine

(Cl)

1 atom

The binding sites of Calcium atom in the Crystal Structure of Ntb-A (pdb code 2if7). This binding sites where shown within 5.0 Angstroms radius around Calcium atom.
In total 2 binding sites of Calcium where determined in the Crystal Structure of Ntb-A, PDB code: 2if7:
Jump to Calcium binding site number: 1; 2;

Calcium binding site 1 out of 2 in the Crystal Structure of Ntb-A


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 1 of Crystal Structure of Ntb-A within 5.0Å range: probe atom residue distance (Å) B Occ A:Ca205 b:74.7 occ:1.00 O A:PHE66 2.5 82.7 1.0 C A:PHE66 3.7 81.0 1.0 N A:PHE66 4.1 81.5 1.0 OE1 A:GLN73 4.3 85.1 1.0 CA A:PHE66 4.5 80.5 1.0 N A:THR67 4.6 81.0 1.0 CA A:THR67 4.7 80.5 1.0 CB A:ASN65 4.7 82.8 1.0 C A:THR67 4.9 81.7 1.0

Calcium binding site 2 out of 2 in the Crystal Structure of Ntb-A


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 2 of Crystal Structure of Ntb-A within 5.0Å range: probe atom residue distance (Å) B Occ D:Ca204 b:62.8 occ:1.00 O D:ASN181 2.3 74.5 1.0 OD1 D:ASN181 2.6 69.8 1.0 C D:ASN181 3.3 73.4 1.0 CG D:ASN181 3.7 67.5 1.0 N D:ASN181 4.1 71.4 1.0 CA D:ASN181 4.1 71.4 1.0 N D:LEU182 4.3 75.7 1.0 CB D:ASN181 4.5 70.6 1.0 CA D:LEU182 4.5 77.5 1.0 CD2 D:LEU182 4.7 71.2 1.0 ND2 D:ASN181 4.8 65.7 1.0

E.Cao, U.A.Ramagopal, A.Fedorov, E.Fedorov, Q.Yan, J.W.Lary, J.L.Cole, S.G.Nathenson, S.C.Almo. Ntb-A Receptor Crystal Structure: Insights Into Homophilic Interactions in the Signaling Lymphocytic Activation Molecule Receptor Family. Immunity V. 25 559 2006.
ISSN: ISSN 1074-7613
PubMed: 17045824
DOI: 10.1016/J.IMMUNI.2006.06.020