	233,605 Structures from the PDB
	1,068,577 Computed Structure Models (CSM)

1GHE|pdb_00001ghe

CRYSTAL STRUCTURE OF TABTOXIN RESISTANCE PROTEIN COMPLEXED WITH AN ACYL COENZYME A

PDB DOI: https://doi.org/10.2210/pdb1GHE/pdb

Classification: TRANSFERASE
Organism(s): Pseudomonas amygdali pv. tabaci
Expression System: Escherichia coli
Mutation(s): Yes

Deposited: 2000-12-13 Released: 2003-01-14
Deposition Author(s): He, H.,Ding, Y.,Bartlam, M.,Sun, F.,Le, Y.,Qin, X.,Tang, H.,Zhang, R.,Joachimiak, A.,Liu, Y.,Zhao, N.,Rao, Z.

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.55 Å
R-Value Free:
0.230 (Depositor)
R-Value Work:
0.209 (Depositor)

wwPDB Validation 3D Report Full Report

This is version 1.5 of the entry. See complete history.

Literature

Crystal Structure of Tabtoxin Resistance Protein Complexed with Acetyl Coenzyme A Reveals the Mechanism for beta-Lactam Acetylation

He, H., Ding, Y., Bartlam, M., Sun, F., Le, Y., Qin, X., Tang, H., Zhang, R., Joachimiak, A., Liu, Y., Zhao, N., Rao, Z.

(2003) J Mol Biology 325: 1019-1030

PubMed: 12527305 Search on PubMed
DOI: https://doi.org/10.1016/s0022-2836(02)01284-6
Primary Citation of Related Structures:
1GHE,1J4J

PubMed Abstract:
Tabtoxin resistance protein (TTR) is an enzyme that renders tabtoxin-producing pathogens, such as Pseudomonas syringae, tolerant to their own phytotoxins. Here, we report the crystal structure of TTR complexed with its natural cofactor, acetyl coenzyme A (AcCoA), to 1.55A resolution. The binary complex forms a characteristic "V" shape for substrate binding and contains the four motifs conserved in the GCN5-related N-acetyltransferase (GNAT) superfamily, which also includes the histone acetyltransferases (HATs). A single-step mechanism is proposed to explain the function of three conserved residues, Glu92, Asp130 and Tyr141, in catalyzing the acetyl group transfer to its substrate. We also report that TTR possesses HAT activity and suggest an evolutionary relationship between TTR and other GNAT members.

Organizational Affiliation

Laboratory of Structural Biology, and MOE Laboratory of Protein Science, School of Life Sciences and Engineering, Tsinghua University, 100084, Beijing, People's Republic of China.

Macromolecule Content

Total Structure Weight: 40.6 kDa
Atom Count: 2,870
Modelled Residue Count: 341
Deposited Residue Count: 354
Unique protein chains: 1

Macromolecules

Find similar proteins by:

(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ACETYLTRANSFERASE	A,B	177	Pseudomonas amygdali pv. tabaci	Mutation(s): 5 EC: 2.3.1
UniProt
Find proteins for P16966 (Pseudomonas amygdali pv. tabaci) Explore P16966 Go to UniProtKB: P16966
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	P16966
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
ACO Query on ACO Download Ideal Coordinates CCD File SDF format, chain C [auth A] SDF format, chain D [auth B] MOL2 format, chain C [auth A] MOL2 format, chain D [auth B] mmCIF format, chain C [auth A] mmCIF format, chain D [auth B]	C [auth A], D [auth B]	*ACETYL COENZYME A** C₂₃ H₃₈ N₇ O₁₇ P₃ S ZSLZBFCDCINBPY-ZSJPKINUSA-N		Interactions Focus chain C [auth A] Focus chain D [auth B]

Modified Residues 1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE Query on MSE	A, B	L-PEPTIDE LINKING	C₅ H₁₁ N O₂ Se		MET

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 1.55 Å
R-Value Free: 0.230 (Depositor)
R-Value Work: 0.209 (Depositor)

Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 101.76	α = 90
b = 45.7	β = 105.79
c = 84.24	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
O	model building
CNS	refinement
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

View Full Validation Report

View more in-depth experimental data

Entry History

Deposition Data

Released Date: 2003-01-14

Deposition Author(s):

Revision History (Full details and data files)

Version 1.0: 2003-01-14
Type: Initial release
Version 1.1: 2008-04-26
Changes: Version format compliance
Version 1.2: 2011-07-13
Changes: Version format compliance
Version 1.3: 2017-10-04
Changes: Refinement description
Version 1.4: 2023-12-27
Changes: Data collection, Database references, Derived calculations
Version 1.5: 2024-11-06
Changes: Structure summary