1S26	Toxin,Lyase Metal Binding Protein	date	Jan 08, 2004
title	Structure Of Anthrax Edema Factor-Calmodulin-Alpha,Beta- Methyleneadenosine 5'-Triphosphate Complex Reveals An Alter Mode Of Atp Binding To The Catalytic Site
authors	Y.Shen, N.L.Zhukovskaya, A.Bohm, W.J.Tang
compound		source
Molecule: Calmodulin-Sensitive Adenylate Cyclase Chain: A, B, C Fragment: Residue 291-800, C-Terminal Ef3 Synonym: Atp Pyrophosphate-Lyase, Adenylyl Cyclase, Edema F Anthrax Edema Toxin Adenylate Cyclase Component; Ec: 4.6.1.1 Engineered: Yes		Organism_scientific: Bacillus Anthracis Organism_taxid: 1392 Gene: Cya, Pxo1-122 Expression_system: Escherichia Coli Bl21 Expression_system_taxid: 511693 Expression_system_strain: Bl21 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pproex
Molecule: Calmodulin Chain: D, E, F Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Calm1, Cam1, Calm, Cam , Calm2, Cam2, Camb , Calm3, C Camc; Expression_system: Escherichia Coli Bl21 Expression_system_taxid: 511693 Expression_system_strain: Bl21 Expression_system_vector_type: Plasmid Expression_system_plasmid: Paed4-Hcam
symmetry	Space Group: I 2 2 2	R_factor 0.264 R_Free 0.304
crystal cell	length a length b length c angle alpha angle beta angle gamma 117.555 167.605 345.346 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	3.00 Å
ligand	APC, CA, YB	enzyme	Lyase E.C.4.6.1.1 BRENDA
related structures	by homologous chain: 1K93
Gene Ontology	Chain Function Process Component A, C, B F, D, E
Primary reference	Structure of anthrax edema factor-calmodulin-adenosine 5'-(alpha,beta-methylene)-triphosphate complex reveals an alternative mode of ATP binding to the catalytic site., Shen Y, Guo Q, Zhukovskaya NL, Drum CL, Bohm A, Tang WJ, Biochem Biophys Res Commun 2004 Apr 30;317(2):309-14. PMID:15063758

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (312 Kb) [Save to disk] Biological Unit Coordinates (1s26.pdb1.gz) 105 Kb Biological Unit Coordinates (1s26.pdb2.gz) 101 Kb Biological Unit Coordinates (1s26.pdb3.gz) 108 Kb LPC: Ligand-Protein Contacts for 1S26 CSU: Contacts of Structural Units for 1S26 Likely Quarternary Molecular Structure file(s) for 1S26 Structure Factors (613 Kb) Retrieve 1S26 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1S26 from S2C, [Save to disk] Re-refined 1s26 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1S26 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 1S26

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 1S26, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1s26a_, region A [Jmol] [rasmolscript] [script source]     - Domain d1s26b_, region B [Jmol] [rasmolscript] [script source]     - Domain d1s26c_, region C [Jmol] [rasmolscript] [script source]     - Domain d1s26d_, region D [Jmol] [rasmolscript] [script source]     - Domain d1s26e_, region E [Jmol] [rasmolscript] [script source]     - Domain d1s26f_, region F [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: [1s26_D] [1s26_A] [1s26_E] [1s26_F] [1s26_C] [1s26_B] [1s26] SWISS-PROT database: [P62158] [P40136] Belongs to the calmodulin calcium binding protein (calmodulin) family according to TCDB. Domain organization of [CALM_HUMAN] [CYAA_BACAN] by SWISSPFAM Domain found in 1S26: [EFh ] by SMART

Other resources with information on 1S26

Community annotation for 1S26 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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