Chlorine in PDB 4ttg: Beta-Galactosidase (E. Coli) in the Presence of Potassium Chloride.

Enzymatic activity of Beta-Galactosidase (E. Coli) in the Presence of Potassium Chloride.

All present enzymatic activity of Beta-Galactosidase (E. Coli) in the Presence of Potassium Chloride.:
3.2.1.23;

Protein crystallography data

The structure of Beta-Galactosidase (E. Coli) in the Presence of Potassium Chloride., PDB code: 4ttg was solved by D.H.Juers, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

*Resolution Low / High (Å)*	55.81 / 1.60
*Space group*	P 2₁ 2₁ 2₁
*Cell size a, b, c (Å), α, β, γ (°)*	149.290, 168.100, 200.310, 90.00, 90.00, 90.00
*R / R_free (%)*	16 / 18.8

Other elements in 4ttg:

The structure of Beta-Galactosidase (E. Coli) in the Presence of Potassium Chloride. also contains other interesting chemical elements:

Magnesium	(Mg)	14 atoms
Potassium	(K)	16 atoms

Chlorine Binding Sites:

The binding sites of Chlorine atom in the Beta-Galactosidase (E. Coli) in the Presence of Potassium Chloride. (pdb code 4ttg). This binding sites where shown within 5.0 Angstroms radius around Chlorine atom.
In total only one binding site of Chlorine was determined in the Beta-Galactosidase (E. Coli) in the Presence of Potassium Chloride., PDB code: 4ttg:

Chlorine binding site 1 out of 1 in 4ttg

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Chlorine Binding Sites List in 4ttg

Chlorine binding site 1 out of 1 in the Beta-Galactosidase (E. Coli) in the Presence of Potassium Chloride.

Mono view

Stereo pair view

A full contact list of Chlorine with other atoms in the Cl binding site number 1 of Beta-Galactosidase (E. Coli) in the Presence of Potassium Chloride. within 5.0Å range:

probe	atom	residue	distance (Å)	B	Occ
A:Cl3009 b:19.3 occ:1.00	O	A:HOH3879	2.9	24.2	1.0
	O	A:HOH3202	3.0	28.2	1.0
	N	A:ARG37	3.1	9.1	1.0
	NE2	A:GLN50	3.5	11.2	1.0
	N	A:ASN38	3.6	10.5	1.0
	CA	A:TRP36	3.8	8.3	1.0
	CD1	A:TRP36	3.8	9.6	1.0
	C	A:TRP36	4.0	8.9	1.0
	CA	A:ARG37	4.0	9.4	1.0
	C	A:ARG37	4.0	10.7	1.0
	CB	A:ASN38	4.0	12.4	1.0
	CB	A:TRP36	4.1	8.7	1.0
	CG	A:TRP36	4.3	9.0	1.0
	CB	A:ARG37	4.3	9.4	1.0
	CB	A:GLU41	4.4	11.7	1.0
	CG	A:GLU41	4.4	14.4	1.0
	O	A:HOH3153	4.4	20.8	1.0
	CA	A:ASN38	4.5	11.4	1.0
	O	A:ASN38	4.6	10.9	1.0
	CD	A:GLN50	4.6	11.4	1.0
	OG	A:SER48	4.6	11.6	1.0
	N	A:GLN49	4.7	14.2	1.0
	CG	A:ARG37	4.8	9.2	1.0
	CA	A:SER48	4.8	12.6	1.0
	OE1	A:GLN50	4.9	13.0	1.0
	O	A:ARG37	5.0	10.2	1.0

Reference:

R.W.Wheatley, D.H.Juers, B.B.Lev, R.E.Huber, S.U.Noskov. Elucidating Factors Important For Monovalent Cation Selectivity in Enzymes: E. Coli Beta-Galactosidase As A Model Phys Chem Chem Phys 2015.
ISSN: ESSN 1463-9084

Page generated: Fri Jul 11 21:49:11 2025

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