7WSJ | pdb_00007wsj

Crystal structure of the tandem B-box domain of Arabidopsis thaliana CONSTANS

PDB DOI: https://doi.org/10.2210/pdb7WSJ/pdb

Classification: PLANT PROTEIN
Organism(s): Arabidopsis thaliana
Expression System: Escherichia coli B
Mutation(s): No

Deposited: 2022-01-29 Released: 2022-03-02
Deposition Author(s): Dahal, P., Pathak, D., Kwon, E., Kim, D.Y.
Funding Organization(s): Not funded

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 2.40 Å
R-Value Free:
0.236 (Depositor), 0.239 (DCC)
R-Value Work:
0.204 (Depositor), 0.206 (DCC)
R-Value Observed:
0.205 (Depositor)

wwPDB Validation 3D Report Full Report

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

Literature

Crystal structure of a tandem B-box domain from Arabidopsis CONSTANS.

Dahal, P., Kwon, E., Pathak, D., Kim, D.Y.

(2022) Biochem Biophys Res Commun 599: 38-42

PubMed: 35168062 Search on PubMed
DOI: https://doi.org/10.1016/j.bbrc.2022.02.025
Primary Citation Related Structures:
7WSJ

PubMed Abstract:
CONSTANS is a central protein in the regulation of photoperiodic flowering, which is expressed in response to day length and promotes the expression of Flowering Locus T. The tandem B-box domain in CONSTANS mediates interactions with various proteins to regulate the expression of Flowering Locus T. Although most plants, including Arabidopsis, have multiple B-box proteins, their B-box structures have not been elucidated. Here, we report the crystal structure of a tandem B-box domain from Arabidopsis CONSTANS. The crystal structure shows that each B-box adopts a canonical B-box fold and coordinates two zinc atoms. Furthermore, the crystal structure reveals that the B-box domain has a unique structure that distinguishes it from animal B-boxes at the monomer and dimer level.

Organizational Affiliation

College of Pharmacy, Yeungnam University, Gyeongsan, Gyeongbuk, 38541, Republic of Korea.

Macromolecule Content

Total Structure Weight: 36.82 kDa
Atom Count: 2,191
Modeled Residue Count: 279
Deposited Residue Count: 333
Unique protein chains: 1

Macromolecules

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| 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Zinc finger protein CONSTANS	A, B, C	111	Arabidopsis thaliana	Mutation(s): 0 Gene Names: CO, At5g15840, F14F8_220
UniProt
Find proteins for Q39057 (Arabidopsis thaliana) Explore Q39057 Go to UniProtKB: Q39057
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	Q39057
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
ZN (Subject of Investigation/LOI) Query on ZN Download:Ideal Coordinates CCD File SDF format, chain D [auth A] SDF format, chain E [auth A] SDF format, chain F [auth A] SDF format, chain G [auth A] SDF format, chain H [auth B] SDF format, chain I [auth B] SDF format, chain J [auth B] SDF format, chain K [auth B] SDF format, chain L [auth C] SDF format, chain M [auth C] SDF format, chain N [auth C] SDF format, chain O [auth C] MOL2 format, chain D [auth A] MOL2 format, chain E [auth A] MOL2 format, chain F [auth A] MOL2 format, chain G [auth A] MOL2 format, chain H [auth B] MOL2 format, chain I [auth B] MOL2 format, chain J [auth B] MOL2 format, chain K [auth B] MOL2 format, chain L [auth C] MOL2 format, chain M [auth C] MOL2 format, chain N [auth C] MOL2 format, chain O [auth C] mmCIF format, chain D [auth A] mmCIF format, chain E [auth A] mmCIF format, chain F [auth A] mmCIF format, chain G [auth A] mmCIF format, chain H [auth B] mmCIF format, chain I [auth B] mmCIF format, chain J [auth B] mmCIF format, chain K [auth B] mmCIF format, chain L [auth C] mmCIF format, chain M [auth C] mmCIF format, chain N [auth C] mmCIF format, chain O [auth C]	D [auth A] E [auth A] F [auth A] G [auth A] H [auth B] D [auth A], E [auth A], F [auth A], G [auth A], H [auth B], I [auth B], J [auth B], K [auth B], L [auth C], M [auth C], N [auth C], O [auth C]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N		Interactions Focus chain D [auth A] Focus chain E [auth A] Focus chain F [auth A] Focus chain G [auth A] Focus chain H [auth B] Focus chain I [auth B] Focus chain J [auth B] Focus chain K [auth B] Focus chain L [auth C] Focus chain M [auth C] Focus chain N [auth C] Focus chain O [auth C] Interactions & Density Focus chain D [auth A] Focus chain E [auth A] Focus chain F [auth A] Focus chain G [auth A] Focus chain H [auth B] Focus chain I [auth B] Focus chain J [auth B] Focus chain K [auth B] Focus chain L [auth C] Focus chain M [auth C] Focus chain N [auth C] Focus chain O [auth C]