1MA3 Protein Binding, Transcription date Jul 31, 2002
title Structure Of A Sir2 Enzyme Bound To An Acetylated P53 Peptide
authors J.L.Avalos, I.Celic, S.Muhammad, M.S.Cosgrove, J.D.Boeke, C.Wolberger
compound source
Molecule: Transcriptional Regulatory Protein, Sir2 Family
Chain: A
Synonym: Sir2-Af2
Engineered: Yes
Organism_scientific: Archaeoglobus Fulgidus
Organism_taxid: 2234
Gene: Sir2-Af2
Expression_system: Escherichia Coli
Expression_system_taxid: 562
Expression_system_strain: Bl21(De3)Plyss
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Pet11a

Molecule: Cellular Tumor Antigen P53
Chain: B
Fragment: Regulatory C-Terminal Tail (Residues 372-389)
Synonym: Tumor Suppressor P53, Phosphoprotein, P53, Antigen Ny-Co-13;
Engineered: Yes
Other_details: Acetylated Peptide From Regulatory C- Terminal Tail

Synthetic: Yes
Other_details: The Sequence Of The Protein Is Naturally Found In Homo Sapiens. The Protein Is An Fmoc Synthesized Peptide.
symmetry Space Group: P 21 21 21
R_factor 0.209 R_Free 0.254
length a length b length c angle alpha angle beta angle gamma
34.892 35.591 184.683 90.00 90.00 90.00
method X-Ray Diffractionresolution 2.00 Å
ligand ALY, MES, ZN enzyme
related structures by homologous chain: 1S7G
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  • Primary referenceStructure of a Sir2 enzyme bound to an acetylated p53 peptide., Avalos JL, Celic I, Muhammad S, Cosgrove MS, Boeke JD, Wolberger C, Mol Cell 2002 Sep;10(3):523-35. PMID:12408821
    Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (48 Kb) [Save to disk]
  • Biological Unit Coordinates (1ma3.pdb1.gz) 44 Kb
  • LPC: Ligand-Protein Contacts for 1MA3
  • CSU: Contacts of Structural Units for 1MA3
  • Likely Quarternary Molecular Structure file(s) for 1MA3
  • Structure Factors (152 Kb)
  • Retrieve 1MA3 in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1MA3 from S2C, [Save to disk]
  • Re-refined 1ma3 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 1MA3 in 3D
  • Proteopedia, because life has more than 2D.
  • On Jmol, a nice Rasmol like molecule viewer. This is good for easiest viewing of basic structure.
  • On FirstGlance, an excellent tool for a guided tour on the structure components, by E. Martz.
  • Visual 3D analysis of 1MA3
  • Cartoon representation from PDB Cartoon
  • Ramachandran plot from PDBSum
  • Structure-derived information
  • Electron Density related parameters from EDS Electron Density Server, at Upsala
  • Dipole moment, from Dipole Server at Weizmann Institute
  • Crystal Contacts, from CryCo at Weizmann Institute
  • 3D motif for 1MA3, from MSDmotif at EBI
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1ma3a_, region A [Jmol] [rasmolscript] [script source]
  • Fold representative 1ma3 from FSSP and Dali (Families of Structurally Similar Proteins)
  • Class (fold), Architecture (subfold), Topology, Homologous superfamily from CATH
  • Summaries and structural analyses of PDB data files from PDBSum
  • Identification of Protein Pockets & Cavities at CASTp
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [1ma3] [1ma3_A] [1ma3_B]
  • SWISS-PROT database: [O30124] [P04637]
  • Belongs to the pore-forming pnc-27 peptide of 32 aas from the p53 tumor suppressor protein (pnc-27) family according to TCDB.
  • Domain organization of [NPD2_ARCFU] [P53_HUMAN] by SWISSPFAM
  • Other resources with information on 1MA3
  • Community annotation for 1MA3 at PDBWiki (http://pdbwiki.org)
  • MMDB (Entrez's Structure Database)
  • Movements, Movies and Images
  • Images from IMB Jena Image Library of Biological Macromolecules.

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