Magnesium in PDB 9fjr: Cryo-Em Structure of Mycobacterium Tuberculosis Sigma-B Rna Polymerase Bound to -10 Promoter Element Ssdna Oligo - Sigma-B Docked Conformation

Enzymatic activity of Cryo-Em Structure of Mycobacterium Tuberculosis Sigma-B Rna Polymerase Bound to -10 Promoter Element Ssdna Oligo - Sigma-B Docked Conformation

All present enzymatic activity of Cryo-Em Structure of Mycobacterium Tuberculosis Sigma-B Rna Polymerase Bound to -10 Promoter Element Ssdna Oligo - Sigma-B Docked Conformation:
2.7.7.6;

Other elements in 9fjr:

The structure of Cryo-Em Structure of Mycobacterium Tuberculosis Sigma-B Rna Polymerase Bound to -10 Promoter Element Ssdna Oligo - Sigma-B Docked Conformation also contains other interesting chemical elements:

Zinc

(Zn)

2 atoms

Magnesium Binding Sites:

The binding sites of Magnesium atom in the Cryo-Em Structure of Mycobacterium Tuberculosis Sigma-B Rna Polymerase Bound to -10 Promoter Element Ssdna Oligo - Sigma-B Docked Conformation (pdb code 9fjr). This binding sites where shown within 5.0 Angstroms radius around Magnesium atom.
In total only one binding site of Magnesium was determined in the Cryo-Em Structure of Mycobacterium Tuberculosis Sigma-B Rna Polymerase Bound to -10 Promoter Element Ssdna Oligo - Sigma-B Docked Conformation, PDB code: 9fjr:

Magnesium binding site 1 out of 1 in 9fjr

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Magnesium Binding Sites List in 9fjr

Magnesium binding site 1 out of 1 in the Cryo-Em Structure of Mycobacterium Tuberculosis Sigma-B Rna Polymerase Bound to -10 Promoter Element Ssdna Oligo - Sigma-B Docked Conformation

Mono view

Stereo pair view

A full contact list of Magnesium with other atoms in the Mg binding site number 1 of Cryo-Em Structure of Mycobacterium Tuberculosis Sigma-B Rna Polymerase Bound to -10 Promoter Element Ssdna Oligo - Sigma-B Docked Conformation within 5.0Å range:

probe	atom	residue	distance (Å)	B	Occ
d:Mg1503 b:18.5 occ:1.00	OD1	d:ASP535	2.1	34.8	1.0
	OD1	d:ASP537	2.1	32.3	1.0
	OD2	d:ASP535	2.1	38.3	1.0
	OD1	d:ASP539	2.1	39.9	1.0
	CG	d:ASP535	2.3	35.0	1.0
	CG	d:ASP537	3.0	27.9	1.0
	CG	d:ASP539	3.0	46.3	1.0
	OD2	d:ASP537	3.2	35.2	1.0
	OD2	d:ASP539	3.3	46.1	1.0
	O	d:ASP535	3.6	32.7	1.0
	CB	d:ASP535	3.8	31.0	1.0
	CB	d:ASP539	4.3	39.0	1.0
	O	d:ASP537	4.3	25.0	1.0
	C	d:ASP535	4.4	19.6	1.0
	CB	d:ASP537	4.4	15.8	1.0
	CA	d:ASP535	4.5	24.3	1.0
	C	d:ASP537	4.6	32.6	1.0
	N	d:ASP539	4.6	25.2	1.0
	N	d:ASP535	4.6	26.8	1.0
	N	d:ASP537	4.7	24.8	1.0
	CA	d:ASP537	4.8	22.9	1.0
	CA	d:ASP539	4.9	29.5	1.0
	NH2	d:ARG500	4.9	49.0	1.0

Reference:

R.K.Vishwakarma, N.Marechal, Z.Morichaud, M.Blaise, E.Margeat, K.Brodolin. Single-Stranded Dna Drives Sigma Subunit Loading Onto Mycobacterial Rna Polymerase to Unlock Initiation-Competent Conformations. Nucleic Acids Res. V. 53 2025.
ISSN: ESSN 1362-4962
PubMed: 40240004
DOI: 10.1093/NAR/GKAF272

Page generated: Sat Aug 16 02:01:31 2025

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