Chlorine in PDB 7ubk: Transcription Antitermination Factor Qlambda, Type-II Crystal

The structure of Transcription Antitermination Factor Qlambda, Type-II Crystal, PDB code: 7ubk was solved by Z.Yin, R.H.Ebright, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	45.59 / 1.97
Space group	P 1 21 1
Cell size a, b, c (Å), α, β, γ (°)	34.304, 64.317, 65.319, 90, 98.35, 90
R / Rfree (%)	18.4 / 22.8

The structure of Transcription Antitermination Factor Qlambda, Type-II Crystal also contains other interesting chemical elements:

Zinc

(Zn)

2 atoms

The binding sites of Chlorine atom in the Transcription Antitermination Factor Qlambda, Type-II Crystal (pdb code 7ubk). This binding sites where shown within 5.0 Angstroms radius around Chlorine atom.
In total 2 binding sites of Chlorine where determined in the Transcription Antitermination Factor Qlambda, Type-II Crystal, PDB code: 7ubk:
Jump to Chlorine binding site number: 1; 2;

Chlorine binding site 1 out of 2 in the Transcription Antitermination Factor Qlambda, Type-II Crystal


Mono view


Stereo pair view

A full contact list of Chlorine with other atoms in the Cl binding site number 1 of Transcription Antitermination Factor Qlambda, Type-II Crystal within 5.0Å range: probe atom residue distance (Å) B Occ B:Cl302 b:54.7 occ:1.00 HH22 B:ARG146 2.7 143.8 1.0 NH2 B:ARG146 3.3 119.8 1.0 HH12 B:ARG146 3.6 134.2 1.0 HH11 B:ARG119 3.6 127.7 1.0 HH21 B:ARG146 3.7 143.8 1.0 CZ B:ARG146 4.0 100.1 1.0 NH1 B:ARG146 4.0 111.8 1.0 NH1 B:ARG119 4.2 106.3 1.0 HH12 B:ARG119 4.2 127.7 1.0 HD2 B:ARG119 4.7 155.1 1.0 HH11 B:ARG146 4.7 134.2 1.0 HD3 B:ARG119 4.8 155.1 1.0

Chlorine binding site 2 out of 2 in the Transcription Antitermination Factor Qlambda, Type-II Crystal


Mono view


Stereo pair view

A full contact list of Chlorine with other atoms in the Cl binding site number 2 of Transcription Antitermination Factor Qlambda, Type-II Crystal within 5.0Å range: probe atom residue distance (Å) B Occ B:Cl303 b:63.2 occ:1.00 HH21 B:ARG146 3.4 143.8 1.0 HE B:ARG146 3.5 91.3 1.0 O B:HOH429 3.5 24.9 1.0 NH2 B:ARG146 3.6 119.8 1.0 HG2 B:ARG146 3.7 53.4 1.0 NE B:ARG146 3.7 76.0 1.0 CZ B:ARG146 3.8 100.1 1.0 HH22 B:ARG146 4.0 143.8 1.0 OG B:SER153 4.0 42.9 1.0 HA B:SER153 4.1 28.9 1.0 HG3 B:ARG146 4.1 53.4 1.0 HG B:SER153 4.3 51.5 1.0 O B:HOH420 4.3 48.9 1.0 CG B:ARG146 4.3 44.4 1.0 O2 B:EDO306 4.3 71.1 1.0 HO2 B:EDO306 4.4 85.4 1.0 NH1 B:ARG146 4.6 111.8 1.0 CD B:ARG146 4.6 55.1 1.0 HB3 B:SER153 4.6 32.1 1.0 CB B:SER153 4.8 26.7 1.0 CA B:SER153 4.9 24.1 1.0 HH12 B:ARG146 4.9 134.2 1.0 HH11 B:ARG146 5.0 134.2 1.0

Z.Yin, J.G.Bird, J.T.Kaelber, B.E.Nickels, R.H.Ebright. In Transcription Antitermination By Q Lambda , Nusa Induces Refolding of Q Lambda to Form A Nozzle That Extends the Rna Polymerase Rna-Exit Channel. Proc.Natl.Acad.Sci.Usa V. 119 78119 2022.
ISSN: ESSN 1091-6490
PubMed: 35951650
DOI: 10.1073/PNAS.2205278119