Biological Assembly 1  

 3D View: Structure

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 8.89 kDa 
• Atom Count: 533 
• Modelled Residue Count: 68 
• Deposited Residue Count: 79 
• Unique protein chains: 1

1HP8

SOLUTION STRUCTURE OF HUMAN P8-MTCP1, A CYSTEINE-RICH PROTEIN ENCODED BY THE MTCP1 ONCOGENE,REVEALS A NEW ALPHA-HELICAL ASSEMBLY MOTIF, NMR, MINIMIZED AVERAGE STRUCTURE

• DOI: 10.2210/pdb1HP8/pdb

• Classification: CYSTEINE MOTIF
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21
• Mutation(s): No 


• Deposited: 1997-08-26 Released: 1998-03-04 
• Deposition Author(s): Barthe, P., Chiche, L., Strub, M.P., Roumestand, C.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 30 
• Conformers Submitted: 1 
• Selection Criteria: structures with the least restraint violations 

Literature

Solution structure of human p8MTCP1, a cysteine-rich protein encoded by the MTCP1 oncogene, reveals a new alpha-helical assembly motif.

Barthe, P., Yang, Y.S., Chiche, L., Hoh, F., Strub, M.P., Guignard, L., Soulier, J., Stern, M.H., van Tilbeurgh, H., Lhoste, J.M., Roumestand, C.

(1997) J Mol Biol 274: 801-815

• PubMed: 9405159 
• DOI: 10.1006/jmbi.1997.1438
• Primary Citation of Related Structures:  
  2HP8, 1HP8


• PubMed Abstract: 
  

MTCP1 (for Mature-T-Cell Proliferation) is the first gene unequivocally identified in the group of uncommon leukemias with a mature phenotype. The three-dimensional solution structure of the human p8(MTCP1) protein encoded by the MTCP1 oncogene was determined by homonuclear proton two-dimensional NMR methods at 600 MHz. After sequence specific assignments, a total of 931 distance restraints and 57 dihedral restraints were collected. The location of the three previously unassigned disulfide bridges was determined from preliminary DIANA structures, using a statistical analysis of intercystinyl distances. The solution structure of p8(MTCP1) is presented as a set of 30 DIANA structures, further refined by restrained molecular dynamics using a simulated annealing protocol with the AMBER force field. The r.m.s.d. values with respect to the mean structure for the backbone and all heavy atoms for a family of 30 structures are 0.73(+/-0.28) and 1.17(+/-0.23) A, when the structured core of the protein (residues 5 to 63) is considered. The solution structure of p8(MTCP1) reveals an original scaffold consisting of three alpha helices, associated with a new cysteine motif. Two of the helices are covalently paired by two disulfide bridges, forming an alpha-hairpin which resembles an antiparallel coiled-coil. The third helix is oriented roughly parallel to the plane defined by the alpha-antiparallel motif and its axis forms an angle of approximately 60 degrees with respect to the main axis of this motif.

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Related Citations: 

• The Mtcp-1/C6.1B Gene Encodes for a Cytoplasmic 8 Kd Protein Overexpressed in T Cell Leukemia Bearing a T(X;14) Translocation
  Soulier, J., Madani, A., Cacheux, V., Rosenzwajg, M., Sigaux, F., Stern, M.H.
  (1994) Oncogene 9: 3565

• Mtcp-1: A Novel Gene on the Human Chromosome Xq28 Translocated to the T Cell Receptor Alpha/Delta Locus in Mature T Cell Proliferations
  Stern, M.H., Soulier, J., Rosenzwajg, M., Nakahara, K., Canki-Klain, N., Aurias, A., Sigaux, F., Kirsch, I.R.
  (1993) Oncogene 8: 2475

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Organizational Affiliation: 

CNRS-UMR 9955, INSERM-U414, Faculté de Pharmacie, Université de Montpellier I, 15 Avenue Charles Flahault, Montpellier Cedex, 34060, France.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Cx9C motif-containing protein 4	A	79	Homo sapiens	Mutation(s): 0  Gene Names: CMC4, C6.1B, MTCP1, MTCP1NB
Find proteins for P56277 (Homo sapiens) Explore P56277  Go to UniProtKB:  P56277
NIH Common Fund Data Resources
PHAROS:  P56277

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 30 
• Conformers Submitted: 1 
• Selection Criteria: structures with the least restraint violations 
• OLDERADO: 1HP8 Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1997-08-26 
• Released Date: 1998-03-04 
Deposition Author(s): Barthe, P., Chiche, L., Strub, M.P., Roumestand, C.

Revision History  

• Version 1.0: 1998-03-04
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 2.0: 2019-08-21
  Changes: Advisory, Atomic model, Data collection, Database references, Derived calculations, Non-polymer description, Other, Polymer sequence, Refinement description, Source and taxonomy, Structure summary