6K5V

Experimental Data Snapshot

wwPDB Validation 3D Report Full Report

This is version 1.1 of the entry. See complete history.

Literature

(2020) Acta Crystallogr F Struct Biol Commun 76: 109-115

PubMed Abstract:
Citrate synthase (CS) catalyzes the conversion of oxaloacetate and acetyl coenzyme A into citrate and coenzyme A in the mitochondrial tricarboxylic acid (TCA) cycle. In plants, mitochondrial metabolism, including the TCA cycle, occurs in interaction with photosynthetic metabolism. The controlled regulation of several enzymes in the TCA cycle, such as CS, is important in plants. Here, the first crystal structure of a plant mitochondrial CS, CSY4 from Arabidopsis thaliana (AtCSY4), has been determined. Structural comparison of AtCSY4 with mitochondrial CSs revealed a high level of similarity. Inhibition analysis showed a similar manner of inhibition as in mitochondrial CSs. The effect of oxidation on one of a pair of cysteine residues in AtCSY4 was speculated upon based on the folded structure.

Organizational Affiliation

Picobiology Institute, Graduate School of Life Science, University of Hyogo, 3-2-1 Kouto, Kamigori-cho, Ako-gun, Hyogo 678-1297, Japan.

Macromolecule Content

Macromolecules

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(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Citrate synthase 4, mitochondrial	A, B, C, D, E A, B, C, D, E, F	458	Arabidopsis thaliana	Mutation(s): 0 Gene Names: CSY4, At2g44350, F4I1.16 EC: 2.3.3.16
UniProt
Find proteins for P20115 (Arabidopsis thaliana) Explore P20115 Go to UniProtKB: P20115
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	P20115
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
CL Query on CL Download Ideal Coordinates CCD File SDF format, chain G [auth A] SDF format, chain H [auth B] SDF format, chain I [auth C] SDF format, chain J [auth D] SDF format, chain K [auth E] SDF format, chain L [auth F] MOL2 format, chain G [auth A] MOL2 format, chain H [auth B] MOL2 format, chain I [auth C] MOL2 format, chain J [auth D] MOL2 format, chain K [auth E] MOL2 format, chain L [auth F]	G [auth A] H [auth B] I [auth C] J [auth D] K [auth E] G [auth A], H [auth B], I [auth C], J [auth D], K [auth E], L [auth F]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M		Interactions Focus chain G [auth A] Focus chain H [auth B] Focus chain I [auth C] Focus chain J [auth D] Focus chain K [auth E] Focus chain L [auth F] Interactions & Density Focus chain G [auth A] Focus chain H [auth B] Focus chain I [auth C] Focus chain J [auth D] Focus chain K [auth E] Focus chain L [auth F]