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
crystal cell	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 Diffraction	resolution	2.00 Å
ligand	ALY, MES, ZN	enzyme
related structures	by homologous chain: 1S7G
Gene Ontology	Chain Function Process Component A zinc ion binding hydrolase activity NAD-dependent histone deacet... protein-malonyllysine demalo... protein-succinyllysine desuc... metal ion binding NAD+ binding transcription, DNA-dependent... regulation of transcription,... protein deacetylation peptidyl-lysine demalonylati... peptidyl-lysine desuccinylat... cytoplasm
Primary reference	Structure 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 (143 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. On AstexViewer, from MSD-EBI (viewer documentation). On RasMol (Install RasMol freeware) Here's help on how to use RasMol.

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_A] [1ma3_B] SWISS-PROT database: [O30124] [P04637] Domain organization of [NPD2_ARCFU] [P53_HUMAN] by SWISSPFAM Alignments of the sequence of 1MA3 with the sequences similar proteins can be viewed for 1MA3's classification [NPD2_ARCFU] [P53_HUMAN] at ProtoMap. Click on "Neighbors List", then on the "See Alignments" button below the list. A sequence distance tree ("phylogenetic tree") can be viewed for 1ACL's classification [NPD2_ARCFU] [P53_HUMAN] at ProtoMap. Click on the Cluster number.

Other resources with information on 1MA3

Community annotation for 1MA3 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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