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Calcium in PDB 1xv8: Crystal Structure of Human Salivary Alpha-Amylase Dimer

Enzymatic activity of Crystal Structure of Human Salivary Alpha-Amylase Dimer

All present enzymatic activity of Crystal Structure of Human Salivary Alpha-Amylase Dimer:
3.2.1.1;

Protein crystallography data

The structure of Crystal Structure of Human Salivary Alpha-Amylase Dimer, PDB code: 1xv8 was solved by S.Z.Fisher, L.Govindasamy, C.K.Tu, D.N.Silverman, H.Rajaniemi, R.Mckenna, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å) 20.00 / 3.00
Space group C 1 2 1
Cell size a, b, c (Å), α, β, γ (°) 150.812, 72.270, 91.106, 90.00, 102.80, 90.00
R / Rfree (%) 22.8 / 27.1

Other elements in 1xv8:

The structure of Crystal Structure of Human Salivary Alpha-Amylase Dimer also contains other interesting chemical elements:

Chlorine (Cl) 2 atoms

Calcium Binding Sites:

The binding sites of Calcium atom in the Crystal Structure of Human Salivary Alpha-Amylase Dimer (pdb code 1xv8). 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 Human Salivary Alpha-Amylase Dimer, PDB code: 1xv8:
Jump to Calcium binding site number: 1; 2;

Calcium binding site 1 out of 2 in 1xv8

Go back to Calcium Binding Sites List in 1xv8
Calcium binding site 1 out of 2 in the Crystal Structure of Human Salivary Alpha-Amylase Dimer


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 Human Salivary Alpha-Amylase Dimer within 5.0Å range:
probe atom residue distance (Å) B Occ
A:Ca497

b:12.1
occ:1.00
OD1 A:ASP167 2.1 13.2 1.0
O A:HIS201 2.2 18.5 1.0
OD1 A:ASN100 2.3 17.1 1.0
O A:ARG158 2.4 23.4 1.0
O A:HOH510 2.5 20.5 1.0
OD2 A:ASP167 2.7 12.4 1.0
CG A:ASP167 2.7 10.3 1.0
C A:ARG158 3.2 21.8 1.0
CG A:ASN100 3.2 17.8 1.0
C A:HIS201 3.3 17.1 1.0
ND2 A:ASN100 3.5 15.9 1.0
CA A:ARG158 3.5 20.6 1.0
CB A:HIS201 3.7 16.4 1.0
CA A:HIS201 4.0 17.4 1.0
O A:VAL157 4.0 21.3 1.0
CB A:ASP167 4.2 9.8 1.0
N A:ASP159 4.3 21.2 1.0
O A:CYS160 4.3 22.0 1.0
CB A:ARG158 4.4 21.2 1.0
N A:MET202 4.4 16.4 1.0
CB A:ASN100 4.6 17.4 1.0
ND2 A:ASN137 4.6 23.7 1.0
N A:ARG158 4.6 18.6 1.0
O A:ASN100 4.7 16.1 1.0
CA A:MET202 4.7 15.8 1.0
C A:VAL157 4.8 18.9 1.0
CA A:ASP159 4.8 21.2 1.0
CG A:MET202 4.8 14.6 1.0
N A:CYS160 4.9 19.4 1.0
CG A:HIS201 5.0 16.2 1.0

Calcium binding site 2 out of 2 in 1xv8

Go back to Calcium Binding Sites List in 1xv8
Calcium binding site 2 out of 2 in the Crystal Structure of Human Salivary Alpha-Amylase Dimer


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 Human Salivary Alpha-Amylase Dimer within 5.0Å range:
probe atom residue distance (Å) B Occ
B:Ca497

b:12.1
occ:1.00
OD1 B:ASP167 2.1 13.2 1.0
O B:HIS201 2.2 18.5 1.0
OD1 B:ASN100 2.3 17.1 1.0
O B:ARG158 2.4 23.4 1.0
O B:HOH513 2.5 20.5 1.0
OD2 B:ASP167 2.7 12.4 1.0
CG B:ASP167 2.7 10.3 1.0
C B:ARG158 3.2 21.8 1.0
CG B:ASN100 3.2 17.8 1.0
C B:HIS201 3.3 17.1 1.0
ND2 B:ASN100 3.5 15.9 1.0
CA B:ARG158 3.5 20.6 1.0
CB B:HIS201 3.7 16.4 1.0
CA B:HIS201 4.0 17.4 1.0
O B:VAL157 4.0 21.3 1.0
CB B:ASP167 4.2 9.8 1.0
N B:ASP159 4.3 21.2 1.0
O B:CYS160 4.3 22.0 1.0
CB B:ARG158 4.4 21.2 1.0
N B:MET202 4.4 16.4 1.0
CB B:ASN100 4.6 17.4 1.0
ND2 B:ASN137 4.6 23.7 1.0
N B:ARG158 4.6 18.6 1.0
O B:ASN100 4.7 16.1 1.0
CA B:MET202 4.7 15.8 1.0
C B:VAL157 4.8 18.9 1.0
CA B:ASP159 4.8 21.2 1.0
CG B:MET202 4.8 14.6 1.0
N B:CYS160 4.9 19.4 1.0
CG B:HIS201 5.0 16.2 1.0

Reference:

S.Z.Fisher, L.Govindasamy, C.K.Tu, D.N.Silverman, H.Rajaniemi, R.Mckenna. Crystal Structure of Human Salivary Alpha-Amylase Dimer To Be Published.
Page generated: Tue Jul 8 03:38:42 2025

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