1HK9	Rna Binding Protein	date	Mar 06, 2003
title	Crystal Structure Of The Hfq Protein From Escherichia Coli
authors	C.Sauter, J.Basquin, D.Suck
compound		source
Molecule: Protein Hfq Chain: A, B, C, D, E, F Fragment: Residues 1-72 Synonym: Host Factor-I Protein, Hf-1, Hf-I Engineered: Yes Other_details: C-Terminal Residues 73-102 Deleted		Organism_scientific: Escherichia Coli Organism_taxid: 562 Expression_system: Escherichia Coli Expression_system_taxid: 511693 Expression_system_strain: Bl21 Expression_system_vector_type: Plasmid Expression_system_vector: Pet24d Other_details: Synthetic Gene
symmetry	Space Group: P 61	R_factor 0.208 R_Free 0.262
crystal cell	length a length b length c angle alpha angle beta angle gamma 61.350 61.350 166.100 90.00 90.00 120.00
method	X-Ray Diffraction	resolution	2.15 Å
related structures	by homologous chain: 1U1T
Gene Ontology	Chain Function Process Component F, A, D, C, E, B
Primary reference	Sm-like proteins in Eubacteria: the crystal structure of the Hfq protein from Escherichia coli., Sauter C, Basquin J, Suck D, Nucleic Acids Res 2003 Jul 15;31(14):4091-8. PMID:12853626

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (69 Kb) [Save to disk] Biological Unit Coordinates (1hk9.pdb1.gz) 65 Kb CSU: Contacts of Structural Units for 1HK9 Likely Quarternary Molecular Structure file(s) for 1HK9 Structure Factors (146 Kb) Retrieve 1HK9 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1HK9 from S2C, [Save to disk] Re-refined 1hk9 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1HK9 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 1HK9

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 1HK9, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1hk9a_, region A [Jmol] [rasmolscript] [script source]     - Domain d1hk9b_, region B [Jmol] [rasmolscript] [script source]     - Domain d1hk9c_, region C [Jmol] [rasmolscript] [script source]     - Domain d1hk9d_, region D [Jmol] [rasmolscript] [script source]     - Domain d1hk9e_, region E [Jmol] [rasmolscript] [script source]     - Domain d1hk9f_, 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: [1hk9_C] [1hk9_A] [1hk9_E] [1hk9_F] [1hk9_D] [1hk9_B] [1hk9] SWISS-PROT database: [P0A6X3] Domain organization of [HFQ_ECOLI] by SWISSPFAM

Other resources with information on 1HK9

Community annotation for 1HK9 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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