Calcium in PDB 2ah4: Guanidinobenzoyl-Trypsin Acyl-Enzyme at 1.13 A Resolution

All present enzymatic activity of Guanidinobenzoyl-Trypsin Acyl-Enzyme at 1.13 A Resolution:
3.4.21.4;

The structure of Guanidinobenzoyl-Trypsin Acyl-Enzyme at 1.13 A Resolution, PDB code: 2ah4 was solved by E.S.Radisky, J.M.Lee, C.J.Lu, D.E.Koshland Jr., with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	43.85 / 1.13
Space group	P 21 21 21
Cell size a, b, c (Å), α, β, γ (°)	54.446, 57.908, 66.771, 90.00, 90.00, 90.00
R / Rfree (%)	11.9 / 14.6

The binding sites of Calcium atom in the Guanidinobenzoyl-Trypsin Acyl-Enzyme at 1.13 A Resolution (pdb code 2ah4). This binding sites where shown within 5.0 Angstroms radius around Calcium atom.
In total only one binding site of Calcium was determined in the Guanidinobenzoyl-Trypsin Acyl-Enzyme at 1.13 A Resolution, PDB code: 2ah4:

Calcium binding site 1 out of 1 in the Guanidinobenzoyl-Trypsin Acyl-Enzyme at 1.13 A Resolution


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 1 of Guanidinobenzoyl-Trypsin Acyl-Enzyme at 1.13 A Resolution within 5.0Å range: probe atom residue distance (Å) B Occ X:Ca501 b:8.1 occ:1.00 O X:VAL75 2.2 7.6 1.0 OE1 X:GLU70 2.3 8.6 1.0 O X:HOH1200 2.3 9.4 1.0 O X:HOH1212 2.3 8.6 1.0 OE2 X:GLU80 2.3 8.3 1.0 O X:ASN72 2.4 6.7 1.0 C X:VAL75 3.3 6.8 1.0 CD X:GLU70 3.4 6.7 1.0 CD X:GLU80 3.4 7.4 1.0 C X:ASN72 3.5 6.6 1.0 CG X:GLU80 3.7 9.0 1.0 OE2 X:GLU70 3.8 9.6 1.0 CA X:VAL76 4.1 8.3 1.0 N X:VAL76 4.1 7.6 1.0 N X:VAL75 4.2 6.2 1.0 N X:GLU77 4.2 8.1 1.0 OE1 X:GLU77 4.3 11.4 1.0 CA X:ILE73 4.3 6.5 1.0 N X:ILE73 4.3 6.1 1.0 N X:ASN72 4.4 6.0 1.0 CA X:VAL75 4.4 7.3 1.0 CA X:ASN72 4.5 6.5 1.0 N X:ASP71 4.5 6.7 1.0 O X:HOH1219 4.5 8.3 1.0 OE1 X:GLU80 4.5 7.8 1.0 CG X:GLU77 4.5 9.6 1.0 C X:ILE73 4.6 6.0 1.0 CG X:GLU70 4.6 6.2 1.0 C X:VAL76 4.6 8.4 1.0 CA X:GLU70 4.7 5.8 1.0 CB X:GLU77 4.8 9.4 1.0 CB X:GLU70 4.8 5.6 1.0 CD X:GLU77 4.8 12.8 1.0 CB X:ASN72 4.9 7.4 1.0 O X:HOH1329 4.9 15.8 1.0 N X:ASN74 4.9 5.4 1.0 C X:ASP71 5.0 5.9 1.0 O X:ILE73 5.0 6.8 1.0

E.S.Radisky, J.M.Lee, C.J.Lu, D.E.Koshland Jr.. Insights Into the Serine Protease Mechanism From Atomic Resolution Structures of Trypsin Reaction Intermediates Proc.Natl.Acad.Sci.Usa V. 103 6835 2006.
ISSN: ISSN 0027-8424
PubMed: 16636277
DOI: 10.1073/PNAS.0601910103