4MT2 | pdb_00004mt2

COMPARISON OF THE NMR SOLUTION STRUCTURE AND THE X-RAY CRYSTAL STRUCTURE OF RAT METALLOTHIONEIN-2

• PDB DOI: https://doi.org/10.2210/pdb4MT2/pdb
• Entry: 4MT2 supersedes: 2MT2

• Classification: METALLOTHIONEIN
• Organism(s): Rattus rattus
• Mutation(s): No 


• Deposited: 1993-02-26 Released: 1993-07-15 
• Deposition Author(s): Robbins, A.H., Stout, C.D.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Work: 
  0.197 (Depositor) 

Literature

Comparison of the NMR solution structure and the x-ray crystal structure of rat metallothionein-2.

Braun, W., Vasak, M., Robbins, A.H., Stout, C.D., Wagner, G., Kagi, J.H., Wuthrich, K.

(1992) Proc Natl Acad Sci U S A 89: 10124-10128

• PubMed: 1438200 
• DOI: https://doi.org/10.1073/pnas.89.21.10124
• Primary Citation Related Structures: 
  4MT2


• PubMed Abstract: 
  

  Metallothioneins are small cysteine-rich proteins capable of binding heavy metal ions such as Zn2+ and Cd2+. They are ubiquitous tissue components in higher organisms, which tentatively have been attributed both unspecific protective functions against toxic metal ions and highly specific roles in fundamental zinc-regulated cellular processes. In this paper a detailed comparison of the NMR solution structure [Schultze, P., Wörgötter, E., Braun, W., Wagner, G., Vasák, M., Kägi, J. H. R. & Wüthrich, K. (1988) J. Mol. Biol. 203, 251-268] and a recent x-ray crystal structure [Robbins, A. H., McRee, D. E., Williamson, M., Collett, S. A., Xoung, N. H., Furey, W. F., Wang, B. C. & Stout, C. D. (1991) J. Mol. Biol. 221, 1269-1293] of rat metallothionein-2 shows that the metallothionein structures in crystals and in solution have identical molecular architectures. The structures obtained with both techniques now present a reliable basis for discussions on structure-function correlations in this class of metalloproteins.

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Organizational Affiliation: 
• Institut für Molekularbiologie und Biophysik, Eidgenössische Technische Hochschule, Zürich, Switzerland.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA,PQS (software)

Macromolecule Content 

• Total Structure Weight: 6.9 kDa 
• Atom Count: 480 
• Modeled Residue Count: 62 
• Deposited Residue Count: 62 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
METALLOTHIONEIN ISOFORM II	A	62	Rattus rattus	Mutation(s): 0
UniProt
Find proteins for P04355 (Rattus norvegicus) Explore P04355  Go to UniProtKB:  P04355

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CD	B [auth A], C [auth A], D [auth A], E [auth A], F [auth A]	CADMIUM ION Cd WLZRMCYVCSSEQC-UHFFFAOYSA-N
ZN	G [auth A], H [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N
NA	I [auth A]	SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Work:  0.197 (Depositor) 

Space Group: P 4₃ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 30.9	α = 90
b = 30.9	β = 90
c = 120.4	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1993-07-15 
Deposition Author(s): Robbins, A.H., Stout, C.D.
• This entry supersedes: 2MT2

Revision History  

• Version 1.0: 1993-07-15
  Type: Initial release
  
• Version 1.1: 2008-03-25
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Derived calculations, Version format compliance
• Version 1.3: 2017-11-29
  Changes: Derived calculations, Other
• Version 1.4: 2024-11-20
  Changes: Data collection, Database references, Derived calculations, Structure summary