Calcium in PDB 1drb: Crystal Structure of Unliganded Escherichia Coli Dihydrofolate Reductase. Ligand-Induced Conformational Changes and Cooperativity in Binding

Enzymatic activity of Crystal Structure of Unliganded Escherichia Coli Dihydrofolate Reductase. Ligand-Induced Conformational Changes and Cooperativity in Binding

All present enzymatic activity of Crystal Structure of Unliganded Escherichia Coli Dihydrofolate Reductase. Ligand-Induced Conformational Changes and Cooperativity in Binding:
1.5.1.3;

Protein crystallography data

The structure of Crystal Structure of Unliganded Escherichia Coli Dihydrofolate Reductase. Ligand-Induced Conformational Changes and Cooperativity in Binding, PDB code: 1drb was solved by C.David, J.Kraut, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

*Resolution Low / High (Å)*	5.00 / 1.96
*Space group*	P 6₁
*Cell size a, b, c (Å), α, β, γ (°)*	92.840, 92.840, 74.240, 90.00, 90.00, 120.00
*R / R_free (%)*	n/a / n/a

Other elements in 1drb:

The structure of Crystal Structure of Unliganded Escherichia Coli Dihydrofolate Reductase. Ligand-Induced Conformational Changes and Cooperativity in Binding also contains other interesting chemical elements:

Chlorine

(Cl)

2 atoms

Calcium Binding Sites:

The binding sites of Calcium atom in the Crystal Structure of Unliganded Escherichia Coli Dihydrofolate Reductase. Ligand-Induced Conformational Changes and Cooperativity in Binding (pdb code 1drb). 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 of Unliganded Escherichia Coli Dihydrofolate Reductase. Ligand-Induced Conformational Changes and Cooperativity in Binding, PDB code: 1drb:

Calcium binding site 1 out of 1 in 1drb

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Calcium Binding Sites List in 1drb

Calcium binding site 1 out of 1 in the Crystal Structure of Unliganded Escherichia Coli Dihydrofolate Reductase. Ligand-Induced Conformational Changes and Cooperativity in Binding

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 Unliganded Escherichia Coli Dihydrofolate Reductase. Ligand-Induced Conformational Changes and Cooperativity in Binding within 5.0Å range:

probe	atom	residue	distance (Å)	B	Occ
B:Ca620 b:9.9 occ:1.00	O	B:HOH979	2.2	27.3	1.0
	O	B:SER135	2.2	17.1	1.0
	O	B:HOH963	2.3	12.0	1.0
	C	B:SER135	3.5	15.0	1.0
	O	B:HOH962	3.7	35.6	1.0
	CA	B:VAL136	4.3	12.6	1.0
	N	B:VAL136	4.3	13.2	1.0
	CA	B:SER135	4.4	17.1	1.0
	CB	B:SER135	4.5	19.5	1.0
	N	B:SER135	4.6	14.7	1.0
	OE2	B:GLU134	4.6	22.3	1.0
	CG	B:GLU134	4.7	19.2	1.0
	O	B:HOH965	4.7	27.1	1.0
	OG	B:SER135	4.8	16.1	1.0
	C	B:VAL136	5.0	16.5	1.0

Reference:

C.Bystroff, J.Kraut. Crystal Structure of Unliganded Escherichia Coli Dihydrofolate Reductase. Ligand-Induced Conformational Changes and Cooperativity in Binding. Biochemistry V. 30 2227 1991.
ISSN: ISSN 0006-2960
PubMed: 1998681
DOI: 10.1021/BI00222A028

Page generated: Mon Jul 7 14:29:07 2025

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