1KEZ	Transferase	date	Nov 19, 2001
title	Crystal Structure Of The Macrocycle-Forming Thioesterase Dom Erythromycin Polyketide Synthase (Debs Te)
authors	S.C.Tsai, L.J.W.Miercke, J.Krucinski, R.Gokhale, J.C.H.Chen, P. D.E.Cane, C.Khosla, R.M.Stroud
compound		source
Molecule: Erythronolide Synthase Chain: A, B, C Fragment: Terminal Thioesterase Domain, Module 6 (Residues 3172); Synonym: 6-Deoxyerythronolide B Synthase III Ec: 2.3.1.94 Engineered: Yes		Organism_scientific: Saccharopolyspora Erythraea Organism_taxid: 1836 Expression_system: Escherichia Coli Bl21 Expression_system_taxid: 511693 Expression_system_strain: Bl21 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet21c
symmetry	Space Group: P 31 2 1	R_factor 0.254 R_Free 0.279
crystal cell	length a length b length c angle alpha angle beta angle gamma 130.500 130.500 208.500 90.00 90.00 120.00
method	X-Ray Diffraction	resolution	2.80 Å
ligand		enzyme	Transferase E.C.2.3.1.94 BRENDA
related structures	by homologous chain: 1MO2, 1YV2
Gene Ontology	Chain Function Process Component A, C, B
Primary reference	Crystal structure of the macrocycle-forming thioesterase domain of the erythromycin polyketide synthase: versatility from a unique substrate channel., Tsai SC, Miercke LJ, Krucinski J, Gokhale R, Chen JC, Foster PG, Cane DE, Khosla C, Stroud RM, Proc Natl Acad Sci U S A 2001 Dec 18;98(26):14808-13. PMID:11752428

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (132 Kb) [Save to disk] Biological Unit Coordinates (1kez.pdb1.gz) 86 Kb Biological Unit Coordinates (1kez.pdb2.gz) 84 Kb CSU: Contacts of Structural Units for 1KEZ Likely Quarternary Molecular Structure file(s) for 1KEZ Structure Factors (359 Kb) Retrieve 1KEZ in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1KEZ from S2C, [Save to disk] Re-refined 1kez structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1KEZ 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 1KEZ

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1KEZ, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1keza_, region A [Jmol] [rasmolscript] [script source]     - Domain d1kezb_, region B [Jmol] [rasmolscript] [script source]     - Domain d1kezc_, region C [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: [1kez_B] [1kez] [1kez_A] [1kez_C] SWISS-PROT database: [Q03133] Domain organization of [ERYA3_SACER] by SWISSPFAM Domain found in 1KEZ: [PKS_TE ] by SMART

Other resources with information on 1KEZ

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

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