1CXK	Transferase	date	Feb 24, 1999
title	Complex Between A Maltononaose Substrate And Bacillus Circul 251 Cgtase E257qd229n
authors	J.C.M.Uitdehaag, K.H.Kalk, B.W.Dijkstra
compound		source
Molecule: Protein (Cyclodextrin-Glycosyltransferase) Chain: A Synonym: Cgtase Ec: 2.4.1.19 Engineered: Yes Mutation: Yes		Organism_scientific: Bacillus Circulans Organism_taxid: 1397 Strain: 251 Expression_system: Bacillus Subtilis Expression_system_taxid: 1423 Expression_system_strain: Db104a Expression_system_plasmid: Pdp66s Expression_system_gene: Cgt Other_details: Mutants Were Constructed In Ecoli Strain Mc1
symmetry	Space Group: P 21 21 21	R_factor 0.158 R_Free 0.210
crystal cell	length a length b length c angle alpha angle beta angle gamma 117.124 110.905 67.593 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.09 Å
ligand	CA, GLC	enzyme	Transferase E.C.2.4.1.19 BRENDA
related structures	by homologous chain: 1OT2, 1UKQ
Gene Ontology	Chain Function Process Component A
Primary reference	X-ray structures along the reaction pathway of cyclodextrin glycosyltransferase elucidate catalysis in the alpha-amylase family., Uitdehaag JC, Mosi R, Kalk KH, van der Veen BA, Dijkhuizen L, Withers SG, Dijkstra BW, Nat Struct Biol 1999 May;6(5):432-6. PMID:10331869

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (128 Kb) [Save to disk] Biological Unit Coordinates (1cxk.pdb1.gz) 122 Kb LPC: Ligand-Protein Contacts for 1CXK CSU: Contacts of Structural Units for 1CXK Likely Quarternary Molecular Structure file(s) for 1CXK Retrieve 1CXK in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1CXK from S2C, [Save to disk]

View 1CXK 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 1CXK

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1CXK, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1cxka4, region A:1-406 [Jmol] [rasmolscript] [script source]     - Domain d1cxka3, region A:407-496 [Jmol] [rasmolscript] [script source]     - Domain d1cxka1, region A:497-583 [Jmol] [rasmolscript] [script source]     - Domain d1cxka2, region A:584-686 [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: [1cxk_A] [1cxk] SWISS-PROT database: [P43379] Domain organization of [CDGT2_BACCI] by SWISSPFAM Domains found in 1CXK: [Aamy] [Aamy_C] [CBM_2 ] by SMART

Other resources with information on 1CXK

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

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