Calcium in PDB 2nz0: Crystal Structure of Potassium Channel KV4.3 in Complex with Its Regulatory Subunit KCHIP1 (Casp Target)

The structure of Crystal Structure of Potassium Channel KV4.3 in Complex with Its Regulatory Subunit KCHIP1 (Casp Target), PDB code: 2nz0 was solved by H.Wang, Y.Yan, Y.Shen, L.Chen, K.Wang, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	30.00 / 3.20
Space group	I 2 2 2
Cell size a, b, c (Å), α, β, γ (°)	112.186, 112.213, 141.051, 90.00, 90.00, 90.00
R / Rfree (%)	26.1 / 31

The structure of Crystal Structure of Potassium Channel KV4.3 in Complex with Its Regulatory Subunit KCHIP1 (Casp Target) also contains other interesting chemical elements:

Zinc

(Zn)

2 atoms

The binding sites of Calcium atom in the Crystal Structure of Potassium Channel KV4.3 in Complex with Its Regulatory Subunit KCHIP1 (Casp Target) (pdb code 2nz0). This binding sites where shown within 5.0 Angstroms radius around Calcium atom.
In total 4 binding sites of Calcium where determined in the Crystal Structure of Potassium Channel KV4.3 in Complex with Its Regulatory Subunit KCHIP1 (Casp Target), PDB code: 2nz0:
Jump to Calcium binding site number: 1; 2; 3; 4;

Calcium binding site 1 out of 4 in the Crystal Structure of Potassium Channel KV4.3 in Complex with Its Regulatory Subunit KCHIP1 (Casp Target)


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 Potassium Channel KV4.3 in Complex with Its Regulatory Subunit KCHIP1 (Casp Target) within 5.0Å range: probe atom residue distance (Å) B Occ A:Ca301 b:0.9 occ:1.00 O A:TYR141 2.5 1.0 1.0 OD1 A:ASN137 2.7 0.1 1.0 OE1 A:GLU146 2.9 0.6 1.0 ND2 A:ASN137 3.1 0.3 1.0 OD1 A:ASP135 3.2 0.9 1.0 CG A:ASN137 3.3 0.3 1.0 C A:TYR141 3.4 0.0 1.0 OE2 A:GLU146 3.7 0.1 1.0 CD A:GLU146 3.7 0.3 1.0 ND2 A:ASN143 3.9 0.7 1.0 CA A:TYR141 4.0 0.0 1.0 N A:TYR141 4.0 0.3 1.0 O A:ASP139 4.0 0.9 1.0 CB A:TYR141 4.0 0.8 1.0 CG A:ASP135 4.4 0.8 1.0 C A:ASP139 4.4 0.2 1.0 CB A:ASP139 4.4 0.7 1.0 N A:ILE142 4.5 0.1 1.0 N A:ASP139 4.7 0.8 1.0 CA A:ASP139 4.7 0.6 1.0 CB A:ASN137 4.8 0.7 1.0 CA A:ILE142 4.8 0.2 1.0 OD2 A:ASP135 4.9 0.3 1.0 CD1 A:TYR141 4.9 1.0 1.0

Calcium binding site 2 out of 4 in the Crystal Structure of Potassium Channel KV4.3 in Complex with Its Regulatory Subunit KCHIP1 (Casp Target)


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 Potassium Channel KV4.3 in Complex with Its Regulatory Subunit KCHIP1 (Casp Target) within 5.0Å range: probe atom residue distance (Å) B Occ A:Ca302 b:0.2 occ:1.00 O A:ILE189 2.9 0.6 1.0 OD1 A:ASP187 2.9 0.0 1.0 OE1 A:GLU194 3.1 0.9 1.0 CG A:ASN185 3.5 0.9 1.0 CB A:ASN185 3.6 1.0 1.0 OD2 A:ASP187 3.6 0.5 1.0 CG A:ASP187 3.7 0.1 1.0 ND2 A:ASN185 3.7 0.8 1.0 OE2 A:GLU194 3.7 0.9 1.0 C A:ILE189 3.8 0.6 1.0 CD A:GLU194 3.8 0.0 1.0 OD1 A:ASN185 3.9 0.4 1.0 CB A:ILE189 3.9 0.5 1.0 OD2 A:ASP183 3.9 0.8 1.0 CG2 A:ILE189 4.0 0.3 1.0 CG2 A:THR191 4.0 0.4 1.0 CA A:ILE189 4.4 0.6 1.0 N A:VAL190 4.8 0.6 1.0 N A:ILE189 4.8 0.6 1.0 CA A:ASN185 4.9 0.1 1.0 CG A:ASP183 4.9 0.8 1.0 N A:THR191 4.9 0.4 1.0 N A:ASN185 5.0 0.5 1.0 OD1 A:ASP183 5.0 0.3 1.0

Calcium binding site 3 out of 4 in the Crystal Structure of Potassium Channel KV4.3 in Complex with Its Regulatory Subunit KCHIP1 (Casp Target)


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 3 of Crystal Structure of Potassium Channel KV4.3 in Complex with Its Regulatory Subunit KCHIP1 (Casp Target) within 5.0Å range: probe atom residue distance (Å) B Occ C:Ca301 b:0.2 occ:1.00 O C:TYR141 2.6 0.7 1.0 OE1 C:GLU146 2.7 0.6 1.0 OD1 C:ASN137 2.8 0.3 1.0 OD1 C:ASP135 3.3 0.1 1.0 OE2 C:GLU146 3.3 0.6 1.0 CD C:GLU146 3.3 0.4 1.0 ND2 C:ASN137 3.4 0.6 1.0 C C:TYR141 3.4 0.9 1.0 CG C:ASN137 3.5 0.8 1.0 ND2 C:ASN143 3.5 0.7 1.0 CB C:ASP139 3.8 0.5 1.0 N C:TYR141 4.0 0.8 1.0 CA C:TYR141 4.0 0.6 1.0 CB C:TYR141 4.0 1.0 1.0 CG C:ASP135 4.4 0.6 1.0 N C:ILE142 4.4 0.3 1.0 OD2 C:ASP139 4.6 0.4 1.0 N C:ASP139 4.7 0.5 1.0 CA C:ASP139 4.7 0.4 1.0 CG C:ASP139 4.7 0.3 1.0 CG C:ASN143 4.8 0.6 1.0 N C:GLY140 4.8 0.7 1.0 CA C:ILE142 4.8 0.7 1.0 CG C:GLU146 4.8 0.8 1.0 CD1 C:TYR141 4.9 0.4 1.0 CG C:TYR141 5.0 0.6 1.0 CB C:ASN137 5.0 0.3 1.0

Calcium binding site 4 out of 4 in the Crystal Structure of Potassium Channel KV4.3 in Complex with Its Regulatory Subunit KCHIP1 (Casp Target)


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 4 of Crystal Structure of Potassium Channel KV4.3 in Complex with Its Regulatory Subunit KCHIP1 (Casp Target) within 5.0Å range: probe atom residue distance (Å) B Occ C:Ca302 b:0.3 occ:1.00 O C:ILE189 2.7 0.2 1.0 OE1 C:GLU194 2.8 0.9 1.0 OD1 C:ASP187 3.1 0.3 1.0 OD2 C:ASP187 3.3 0.5 1.0 OD1 C:ASN185 3.3 0.2 1.0 CG C:ASN185 3.4 0.2 1.0 OE2 C:GLU194 3.4 0.6 1.0 CD C:GLU194 3.5 0.8 1.0 CG C:ASP187 3.6 0.9 1.0 CB C:ASN185 3.6 0.4 1.0 C C:ILE189 3.6 0.2 1.0 OD1 C:ASP183 3.7 0.2 1.0 ND2 C:ASN185 4.0 0.9 1.0 CG2 C:ILE189 4.0 0.9 1.0 CB C:ILE189 4.1 0.9 1.0 CA C:ILE189 4.3 0.1 1.0 CG2 C:THR191 4.4 0.5 1.0 N C:VAL190 4.6 0.2 1.0 CG C:ASP183 4.6 0.6 1.0 N C:ILE189 4.7 0.2 1.0 N C:ASN185 4.8 0.8 1.0 CA C:VAL190 4.8 0.4 1.0 CA C:ASN185 4.8 0.5 1.0 OD2 C:ASP183 4.8 1.0 1.0 N C:THR191 4.8 0.7 1.0 CG C:GLU194 5.0 0.3 1.0

H.Wang, Y.Yan, Q.Liu, Y.Huang, Y.Shen, L.Chen, Y.Chen, Q.Yang, Q.Hao, K.Wang, J.Chai. Structural Basis For Modulation of KV4 K(+) Channels By Auxiliary Kchip Subunits. Nat.Neurosci. V. 10 32 2007.
ISSN: ISSN 1097-6256
PubMed: 17187064
DOI: 10.1038/NN1822