1TW6	Inhibitor Apoptosis	date	Jun 30, 2004
title	Structure Of An Ml-Iapxiap Chimera Bound To A 9mer Peptide From Smac
authors	M.C.Franklin, D.Vucic, H.J.A.Wallweber, K.Das, H.Shin, L.O.Elliot S.Kadkhodayan, K.Deshayes, G.S.Salvesen, W.J.Fairbrother
compound		source
Molecule: Baculoviral Iap Repeat-Containing Protein 7 Chain: A, B Fragment: Ml-Iap Residues 63-172 Synonym: Kidney Inhibitor Of Apoptosis Protein, Kiap, Melan Inhibitor Of Apoptosis Protein, Ml-Iap, Livin, Unq5800pro19607pro21344, Xiap-Bir3 Chimera; Engineered: Yes Mutation: Yes Other_details: Residues 150, 160-168, And 172 Replaced With Homologues;		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Birc7 Expression_system: Escherichia Coli Bl21(De3) Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet15b
Molecule: Diablo Homolog, Mitochondrial Chain: C, D Fragment: Smac Residues 1-9 Synonym: Second Mitochondria-Derived Activator Of Caspase, Protein, Direct Iap Binding Protein With Low Pi; Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Diablo, Smac Expression_system: Escherichia Coli Expression_system_taxid: 562
symmetry	Space Group: P 41 21 2	R_factor 0.155 R_Free 0.171
crystal cell	length a length b length c angle alpha angle beta angle gamma 87.856 87.856 74.634 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	1.71 Å
ligand	BTB, EDO, LI, ZN	enzyme
related structures	by homologous chain: 1OXN
Primary reference	Engineering ML-IAP to produce an extraordinarily potent caspase-9 inhibitor: implications for Smac-dependent anti-apoptotic activity of ML-IAP., Vucic D, Franklin MC, Wallweber HJ, Das K, Eckelman BP, Shin H, Elliott LO, Kadkhodayan S, Deshayes K, Salvesen G, Fairbrother WJ, Biochem J 2004 Oct 15;. PMID:15485396

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (44 Kb) [Save to disk] Biological Unit Coordinates (1tw6.pdb1.gz) 19 Kb Biological Unit Coordinates (1tw6.pdb2.gz) 20 Kb Biological Unit Coordinates (1tw6.pdb3.gz) 72 Kb Biological Unit Coordinates (1tw6.pdb4.gz) 37 Kb Biological Unit Coordinates (1tw6.pdb5.gz) 19 Kb LPC: Ligand-Protein Contacts for 1TW6 CSU: Contacts of Structural Units for 1TW6 Likely Quarternary Molecular Structure file(s) for 1TW6 Structure Factors (427 Kb) Retrieve 1TW6 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1TW6 from S2C, [Save to disk] Re-refined 1tw6 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1TW6 in 3D

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Visual 3D analysis of 1TW6

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 3D motif for 1TW6, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1tw6a_, region A [Jmol] [rasmolscript] [script source]     - Domain d1tw6b_, region B [Jmol] [rasmolscript] [script source] 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: [1tw6_A] [1tw6_D] [1tw6] [1tw6_B] [1tw6_C] SWISS-PROT database: [Q96CA5] [Q9NR28] Domain organization of [BIRC7_HUMAN] [DBLOH_HUMAN] by SWISSPFAM Domain found in 1TW6: [BIR ] by SMART

Other resources with information on 1TW6

Community annotation for 1TW6 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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