Calcium in PDB 1g94: Crystal Structure Analysis of the Ternary Complex Between Psychrophilic Alpha Amylase From Pseudoalteromonas Haloplanctis in Complex with A Hepta-Saccharide and A Tris Molecule

Enzymatic activity of Crystal Structure Analysis of the Ternary Complex Between Psychrophilic Alpha Amylase From Pseudoalteromonas Haloplanctis in Complex with A Hepta-Saccharide and A Tris Molecule

All present enzymatic activity of Crystal Structure Analysis of the Ternary Complex Between Psychrophilic Alpha Amylase From Pseudoalteromonas Haloplanctis in Complex with A Hepta-Saccharide and A Tris Molecule:
3.2.1.1;

Protein crystallography data

The structure of Crystal Structure Analysis of the Ternary Complex Between Psychrophilic Alpha Amylase From Pseudoalteromonas Haloplanctis in Complex with A Hepta-Saccharide and A Tris Molecule, PDB code: 1g94 was solved by N.Aghajari, M.Roth, R.Haser, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

*Resolution Low / High (Å)*	44.70 / 1.74
*Space group*	C 2 2 2₁
*Cell size a, b, c (Å), α, β, γ (°)*	71.010, 139.960, 115.890, 90.00, 90.00, 90.00
*R / R_free (%)*	15.6 / 18.7

Other elements in 1g94:

Chlorine

(Cl)

1 atom

Calcium Binding Sites:

The binding sites of Calcium atom in the Crystal Structure Analysis of the Ternary Complex Between Psychrophilic Alpha Amylase From Pseudoalteromonas Haloplanctis in Complex with A Hepta-Saccharide and A Tris Molecule (pdb code 1g94). 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 Crystal Structure Analysis of the Ternary Complex Between Psychrophilic Alpha Amylase From Pseudoalteromonas Haloplanctis in Complex with A Hepta-Saccharide and A Tris Molecule, PDB code: 1g94:

Calcium binding site 1 out of 1 in 1g94

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Calcium Binding Sites List in 1g94

Calcium binding site 1 out of 1 in the Crystal Structure Analysis of the Ternary Complex Between Psychrophilic Alpha Amylase From Pseudoalteromonas Haloplanctis in Complex with A Hepta-Saccharide and A Tris Molecule

Mono view

Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 1 of Crystal Structure Analysis of the Ternary Complex Between Psychrophilic Alpha Amylase From Pseudoalteromonas Haloplanctis in Complex with A Hepta-Saccharide and A Tris Molecule within 5.0Å range:

probe	atom	residue	distance (Å)	B	Occ
A:Ca800 b:11.5 occ:1.00	O	A:HIS178	2.4	9.7	1.0
	OD1	A:ASN88	2.4	14.2	1.0
	O	A:GLN135	2.5	10.2	1.0
	OD2	A:ASP144	2.5	12.1	1.0
	O	A:HOH1107	2.5	11.6	1.0
	OD1	A:ASP144	2.6	10.2	1.0
	O	A:HOH1091	2.6	7.5	1.0
	O	A:HOH1108	2.6	9.9	1.0
	CG	A:ASP144	2.9	11.5	1.0
	C	A:GLN135	3.5	13.1	1.0
	CG	A:ASN88	3.5	15.0	1.0
	C	A:HIS178	3.5	11.4	1.0
	ND2	A:ASN88	4.0	11.5	1.0
	CA	A:GLN135	4.2	11.5	1.0
	CB	A:HIS178	4.2	10.9	1.0
	CB	A:ASP144	4.4	9.6	1.0
	O	A:ASN88	4.4	10.6	1.0
	CA	A:HIS178	4.4	9.1	1.0
	N	A:ASN136	4.4	12.7	1.0
	CE1	A:HIS117	4.4	12.8	1.0
	ND1	A:HIS117	4.5	13.4	1.0
	N	A:VAL179	4.5	10.2	1.0
	CG2	A:VAL179	4.6	9.6	1.0
	CA	A:VAL179	4.6	9.0	1.0
	O	A:LEU145	4.6	10.1	1.0
	CA	A:ASN136	4.6	14.1	1.0
	O	A:CYS137	4.7	12.5	1.0
	CB	A:ASN88	4.8	11.4	1.0
	O	A:VAL134	4.8	11.6	1.0
	O	A:HOH1144	4.9	15.6	1.0
	CB	A:GLN135	5.0	12.5	1.0

Reference:

N.Aghajari, M.Roth, R.Haser. Crystallographic Evidence of A Transglycosylation Reaction: Ternary Complexes of A Psychrophilic Alpha-Amylase. Biochemistry V. 41 4273 2002.
ISSN: ISSN 0006-2960
PubMed: 11914073
DOI: 10.1021/BI0160516

Page generated: Mon Jul 7 15:11:01 2025

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