1KQ1	Translation	date	Jan 03, 2002
title	1.55 A Crystal Structure Of The Pleiotropic Translational Re Hfq
authors	M.A.Schumacher, R.F.Pearson, T.Moller, P.Valentin-Hansen, R.G.Br
compound		source
Molecule: Host Factor For Q Beta Chain: A, B, H, I, K, M, S, T, Y, N, R, W Synonym: Hfq Engineered: Yes		Organism_scientific: Staphylococcus Aureus Organism_taxid: 1280 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_vector_type: Plasmid
symmetry	Space Group: P 1 21 1	R_factor 0.237 R_Free 0.259
crystal cell	length a length b length c angle alpha angle beta angle gamma 67.030 89.950 67.770 90.00 97.95 90.00
method	X-Ray Diffraction	resolution	1.55 Å
ligand	ACY	enzyme
note	1KQ1 is a representative structure
related structures	by homologous chain: 1KQ2
Gene Ontology	Chain Function Process Component S, A, W, T, N, K, Y, B, H, M, I, R
Primary reference	Structures of the pleiotropic translational regulator Hfq and an Hfq-RNA complex: a bacterial Sm-like protein., Schumacher MA, Pearson RF, Moller T, Valentin-Hansen P, Brennan RG, EMBO J 2002 Jul 1;21(13):3546-56. PMID:12093755

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (136 Kb) [Save to disk] Biological Unit Coordinates (1kq1.pdb1.gz) 67 Kb Biological Unit Coordinates (1kq1.pdb2.gz) 66 Kb LPC: Ligand-Protein Contacts for 1KQ1 CSU: Contacts of Structural Units for 1KQ1 Likely Quarternary Molecular Structure file(s) for 1KQ1 Structure Factors (1272 Kb) Retrieve 1KQ1 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1KQ1 from S2C, [Save to disk] Re-refined 1kq1 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1KQ1 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 1KQ1

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 1KQ1, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1kq1a_, region A [Jmol] [rasmolscript] [script source]     - Domain d1kq1b_, region B [Jmol] [rasmolscript] [script source]     - Domain d1kq1h_, region H [Jmol] [rasmolscript] [script source]     - Domain d1kq1i_, region I [Jmol] [rasmolscript] [script source]     - Domain d1kq1k_, region K [Jmol] [rasmolscript] [script source]     - Domain d1kq1m_, region M [Jmol] [rasmolscript] [script source]     - Domain d1kq1n_, region N [Jmol] [rasmolscript] [script source]     - Domain d1kq1r_, region R [Jmol] [rasmolscript] [script source]     - Domain d1kq1s_, region S [Jmol] [rasmolscript] [script source]     - Domain d1kq1t_, region T [Jmol] [rasmolscript] [script source]     - Domain d1kq1w_, region W [Jmol] [rasmolscript] [script source]     - Domain d1kq1y_, region Y [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: [1kq1_Y] [1kq1_K] [1kq1_W] [1kq1_H] [1kq1_M] [1kq1_B] [1kq1_R] [1kq1] [1kq1_A] [1kq1_N] [1kq1_I] [1kq1_T] [1kq1_S] SWISS-PROT database: [Q99UG9] Domain organization of [Q99UG9_STAAM] by SWISSPFAM

Other resources with information on 1KQ1

Community annotation for 1KQ1 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

Movements, Movies and Images

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