2O20

Deposited: 2006-11-29 Released: 2007-03-27
Deposition Author(s): Loll, B., Kowalczyk, M., Alings, C., Chieduch, A., Bardowski, J., Saenger, W., Biesiadka, J.

Experimental Data Snapshot

wwPDB Validation 3D Report Full Report

This is version 1.4 of the entry. See complete history.

Literature

(2007) Acta Crystallogr D Biol Crystallogr 63: 431-436

PubMed Abstract:
Catabolite control protein A (CcpA) functions as master transcriptional regulator of carbon catabolism in Firmicutes. It belongs to the family of bacterial repressor/regulator proteins. Here, the crystal structure of the 76 kDa homodimeric CcpA protein from Lactococcus lactis subsp. lactis IL1403 is presented at 1.9 A resolution in the absence of cognate DNA. The phases were derived by molecular replacement and the structure was refined to crystallographic R and R(free) factors of 0.177 and 0.211, respectively. The presence of a sulfate molecule in the direct vicinity of a putative effector-binding site in the monomer allowed the derivation of a model for the possible binding of small organic effector molecules.

Organizational Affiliation

Institute for Chemistry and Biochemistry/Crystallography, Freie Universität Berlin, Takustrasse 6, D-14195 Berlin, Germany.

Macromolecule Content

Macromolecules

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(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Catabolite control protein A	A B [auth C] C [auth D] D [auth B] E A, B [auth C], C [auth D], D [auth B], E, F, G, H	332	Lactococcus lactis	Mutation(s): 1 Gene Names: ccpa
UniProt
Find proteins for Q9CF33 (Lactococcus lactis subsp. lactis (strain IL1403)) Explore Q9CF33 Go to UniProtKB: Q9CF33
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	Q9CF33
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
SO4 Query on SO4 Download Ideal Coordinates CCD File SDF format, chain I [auth A] SDF format, chain J [auth A] SDF format, chain K [auth B] SDF format, chain L [auth B] SDF format, chain M [auth E] SDF format, chain O [auth F] SDF format, chain P [auth F] SDF format, chain Q [auth G] MOL2 format, chain I [auth A] MOL2 format, chain J [auth A] MOL2 format, chain K [auth B] MOL2 format, chain L [auth B] MOL2 format, chain M [auth E] MOL2 format, chain O [auth F] MOL2 format, chain P [auth F] MOL2 format, chain Q [auth G]	I [auth A] J [auth A] K [auth B] L [auth B] M [auth E] I [auth A], J [auth A], K [auth B], L [auth B], M [auth E], O [auth F], P [auth F], Q [auth G]	SULFATE ION O₄ S QAOWNCQODCNURD-UHFFFAOYSA-L		Interactions Focus chain I [auth A] Focus chain J [auth A] Focus chain K [auth B] Focus chain L [auth B] Focus chain M [auth E] Focus chain O [auth F] Focus chain P [auth F] Focus chain Q [auth G] Interactions & Density Focus chain I [auth A] Focus chain J [auth A] Focus chain K [auth B] Focus chain L [auth B] Focus chain M [auth E] Focus chain O [auth F] Focus chain P [auth F] Focus chain Q [auth G]
CL Query on CL Download Ideal Coordinates CCD File SDF format, chain N [auth E] MOL2 format, chain N [auth E]	N [auth E]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M		Interactions Focus chain N [auth E] Interactions & Density Focus chain N [auth E]