6NCR | pdb_00006ncr

Crystal Structure of Tryptophan-tRNA ligase from Chlamydia trachomatis with bound L-tryptophan

PDB DOI: https://doi.org/10.2210/pdb6NCR/pdb

Classification: LIGASE
Organism(s): Chlamydia trachomatis D/UW-3/CX
Expression System: Escherichia coli BL21(DE3)
Mutation(s): No

Deposited: 2018-12-12 Released: 2018-12-26
Deposition Author(s): Seattle Structural Genomics Center for Infectious Disease (SSGCID)

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.75 Å
R-Value Free:
0.196 (Depositor), 0.199 (DCC)
R-Value Work:
0.171 (Depositor), 0.175 (DCC)
R-Value Observed:
0.172 (Depositor)

Starting Model: experimental
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wwPDB Validation 3D Report Full Report

Ligand Structure Quality Assessment

This is version 1.2 of the entry. See complete history.

Literature

Crystal Structure of Tryptophan-tRNA ligase from Chlamydia trachomatis with bound L-tryptophan

Dranow, D.M., Mayclin, S.J., Lorimer, D.D., Horanyi, P.S., Edwards, T.E.

To be published.

Macromolecule Content

Total Structure Weight: 82.65 kDa
Atom Count: 5,955
Modeled Residue Count: 683
Deposited Residue Count: 708
Unique protein chains: 1

Macromolecules

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(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Tryptophan--tRNA ligase	A, B	354	Chlamydia trachomatis D/UW-3/CX	Mutation(s): 0 Gene Names: trpS, CT_585 EC: 6.1.1.2
UniProt
Find proteins for O84589 (Chlamydia trachomatis serovar D (strain ATCC VR-885 / DSM 19411 / UW-3/Cx)) Explore O84589 Go to UniProtKB: O84589
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	O84589
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
TRP Query on TRP Download Ideal Coordinates CCD File SDF format, chain P [auth B] SDF format, chain C [auth A] MOL2 format, chain P [auth B] MOL2 format, chain C [auth A] mmCIF format, chain P [auth B] mmCIF format, chain C [auth A]	C [auth A], P [auth B]	TRYPTOPHAN C₁₁ H₁₂ N₂ O₂ QIVBCDIJIAJPQS-VIFPVBQESA-N		Interactions Focus chain C [auth A] Focus chain P [auth B] Interactions & Density Focus chain C [auth A] Focus chain P [auth B]
EDO Query on EDO Download Ideal Coordinates CCD File SDF format, chain S [auth B] SDF format, chain N [auth A] SDF format, chain M [auth A] SDF format, chain L [auth A] SDF format, chain K [auth A] SDF format, chain J [auth A] SDF format, chain I [auth A] SDF format, chain H [auth A] SDF format, chain G [auth A] SDF format, chain F [auth A] SDF format, chain E [auth A] MOL2 format, chain S [auth B] MOL2 format, chain N [auth A] MOL2 format, chain M [auth A] MOL2 format, chain L [auth A] MOL2 format, chain K [auth A] MOL2 format, chain J [auth A] MOL2 format, chain I [auth A] MOL2 format, chain H [auth A] MOL2 format, chain G [auth A] MOL2 format, chain F [auth A] MOL2 format, chain E [auth A] mmCIF format, chain S [auth B] mmCIF format, chain N [auth A] mmCIF format, chain M [auth A] mmCIF format, chain L [auth A] mmCIF format, chain K [auth A] mmCIF format, chain J [auth A] mmCIF format, chain I [auth A] mmCIF format, chain H [auth A] mmCIF format, chain G [auth A] mmCIF format, chain F [auth A] mmCIF format, chain E [auth A]	E [auth A] F [auth A] G [auth A] H [auth A] I [auth A] E [auth A], F [auth A], G [auth A], H [auth A], I [auth A], J [auth A], K [auth A], L [auth A], M [auth A], N [auth A], S [auth B]	1,2-ETHANEDIOL C₂ H₆ O₂ LYCAIKOWRPUZTN-UHFFFAOYSA-N		Interactions Focus chain E [auth A] Focus chain F [auth A] Focus chain G [auth A] Focus chain H [auth A] Focus chain I [auth A] Focus chain J [auth A] Focus chain K [auth A] Focus chain L [auth A] Focus chain M [auth A] Focus chain N [auth A] Focus chain S [auth B] Interactions & Density Focus chain E [auth A] Focus chain F [auth A] Focus chain G [auth A] Focus chain H [auth A] Focus chain I [auth A] Focus chain J [auth A] Focus chain K [auth A] Focus chain L [auth A] Focus chain M [auth A] Focus chain N [auth A] Focus chain S [auth B]
ACT Query on ACT Download Ideal Coordinates CCD File SDF format, chain V [auth B] SDF format, chain U [auth B] SDF format, chain T [auth B] SDF format, chain R [auth B] SDF format, chain Q [auth B] SDF format, chain D [auth A] MOL2 format, chain V [auth B] MOL2 format, chain U [auth B] MOL2 format, chain T [auth B] MOL2 format, chain R [auth B] MOL2 format, chain Q [auth B] MOL2 format, chain D [auth A] mmCIF format, chain V [auth B] mmCIF format, chain U [auth B] mmCIF format, chain T [auth B] mmCIF format, chain R [auth B] mmCIF format, chain Q [auth B] mmCIF format, chain D [auth A]	D [auth A] Q [auth B] R [auth B] T [auth B] U [auth B] D [auth A], Q [auth B], R [auth B], T [auth B], U [auth B], V [auth B]	ACETATE ION C₂ H₃ O₂ QTBSBXVTEAMEQO-UHFFFAOYSA-M		Interactions Focus chain D [auth A] Focus chain Q [auth B] Focus chain R [auth B] Focus chain T [auth B] Focus chain U [auth B] Focus chain V [auth B] Interactions & Density Focus chain D [auth A] Focus chain Q [auth B] Focus chain R [auth B] Focus chain T [auth B] Focus chain U [auth B] Focus chain V [auth B]
CA Query on CA Download Ideal Coordinates CCD File SDF format, chain O [auth A] MOL2 format, chain O [auth A] mmCIF format, chain O [auth A]	O [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N		Interactions Focus chain O [auth A] Interactions & Density Focus chain O [auth A]

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 1.75 Å
R-Value Free: 0.196 (Depositor), 0.199 (DCC)
R-Value Work: 0.171 (Depositor), 0.175 (DCC)
R-Value Observed: 0.172 (Depositor)

Diffraction Data: https://doi.org/10.18430/m36ncr

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 50.89	α = 90
b = 61.05	β = 90
c = 246.16	γ = 90

Software Package:

Software Name	Purpose
XDS	data reduction
XSCALE	data scaling
PHENIX	refinement
PDB_EXTRACT	data extraction
MoRDa	phasing

Structure Validation

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Ligand Structure Quality Assessment

Entry History

Deposition Data

Released Date: 2018-12-26

Deposition Author(s):

Seattle Structural Genomics Center for Infectious Disease (SSGCID)

Revision History (Full details and data files)

Version 1.0: 2018-12-26
Type: Initial release
Version 1.1: 2023-10-11
Changes: Data collection, Database references, Derived calculations, Refinement description
Version 1.2: 2025-10-22
Changes: Structure summary