1QH4

CRYSTAL STRUCTURE OF CHICKEN BRAIN-TYPE CREATINE KINASE AT 1.41 ANGSTROM RESOLUTION

PDB DOI: 10.2210/pdb1QH4/pdb

Classification: TRANSFERASE
Organism(s): Gallus gallus
Expression System: Escherichia coli
Mutation(s): No

Deposited: 1999-05-11 Released: 1999-11-19
Deposition Author(s): Eder, M., Schlattner, U., Becker, A., Wallimann, T., Kabsch, W., Fritz-Wolf, K.

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.41 Å
R-Value Free: 0.188
R-Value Observed: 0.134

wwPDB Validation 3D Report Full Report

This is version 1.3 of the entry. See complete history.

Literature

Crystal structure of brain-type creatine kinase at 1.41 A resolution.

Eder, M., Schlattner, U., Becker, A., Wallimann, T., Kabsch, W., Fritz-Wolf, K.

(1999) Protein Sci 8: 2258-2269

PubMed: 10595529 Search on PubMedSearch on PubMed Central
DOI: 10.1110/ps.8.11.2258
Primary Citation of Related Structures:
1QH4

PubMed Abstract:

Excitable cells and tissues like muscle or brain show a highly fluctuating consumption of ATP, which is efficiently regenerated from a large pool of phosphocreatine by the enzyme creatine kinase (CK). The enzyme exists in tissue--as well as compartment-specific isoforms. Numerous pathologies are related to the CK system: CK is found to be overexpressed in a wide range of solid tumors, whereas functional impairment of CK leads to a deterioration in energy metabolism, which is phenotypic for many neurodegenerative and age-related diseases. The crystal structure of chicken cytosolic brain-type creatine kinase (BB-CK) has been solved to 1.41 A resolution by molecular replacement. It represents the most accurately determined structure in the family of guanidino kinases. Except for the N-terminal region (2-12), the structures of both monomers in the biological dimer are very similar and closely resemble those of the other known structures in the family. Specific Ca2+-mediated interactions, found between two dimers in the asymmetric unit, result in structurally independent heterodimers differing in their N-terminal conformation and secondary structure. The high-resolution structure of BB-CK presented in this work will assist in designing new experiments to reveal the molecular basis of the multiple isoform-specific properties of CK, especially regarding different subcellular locations and functional interactions with other proteins. The rather similar fold shared by all known guanidino kinase structures suggests a model for the transition state complex of BB-CK analogous to the one of arginine kinase (AK). Accordingly, we have modeled a putative conformation of CK in the transition state that requires a rigid body movement of the entire N-terminal domain by rms 4 A from the structure without substrates.

Related Citations:

Transition State Structure of Arginine Kinase: Implications for Catalysis of Bimolecular Reactions
Zhou, G., Somasundaram, T., Blanc, E., Parthasarathy, G., Ellington, W.R., Chapman, M.S.
(1998) Proc Natl Acad Sci U S A 95: 8449

Structure of Mitochondrial Creatine Kinase.
Fritz-Wolf, K., Schnyder, T., Wallimann, T., Kabsch, W.
(1996) Nature 381: 341

Organizational Affiliation:

Institute of Cell Biology, Swiss Federal Institute of Technology, ETH Zurich, Switzerland.

Macromolecules

Find similar proteins by:

(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CREATINE KINASE	A, B, C, D	380	Gallus gallus	Mutation(s): 0 Gene Names: EMBL-NR. X03509, CKB EC: 2.7.3.2
UniProt
Find proteins for P05122 (Gallus gallus) Explore P05122 Go to UniProtKB: P05122
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	P05122
Protein Feature View Expand
Reference Sequence

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
ACT Query on ACT Download Ideal Coordinates CCD File SDF format, chain F [auth B] SDF format, chain G [auth B] SDF format, chain H [auth C] SDF format, chain E [auth A] SDF format, chain I [auth C] SDF format, chain K [auth D] MOL2 format, chain F [auth B] MOL2 format, chain G [auth B] MOL2 format, chain H [auth C] MOL2 format, chain E [auth A] MOL2 format, chain I [auth C] MOL2 format, chain K [auth D]	E [auth A], F [auth B], G [auth B], H [auth C], I [auth C], E [auth A], F [auth B], G [auth B], H [auth C], I [auth C], K [auth D]	ACETATE ION C₂ H₃ O₂ QTBSBXVTEAMEQO-UHFFFAOYSA-M		Ligand Interaction
CA Query on CA Download Ideal Coordinates CCD File SDF format, chain J [auth D] MOL2 format, chain J [auth D]	J [auth D]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N		Ligand Interaction