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- PDB-1ffh: N AND GTPASE DOMAINS OF THE SIGNAL SEQUENCE RECOGNITION PROTEIN F... -

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Basic information

Entry
Database: PDB / ID: 1ffh
TitleN AND GTPASE DOMAINS OF THE SIGNAL SEQUENCE RECOGNITION PROTEIN FFH FROM THERMUS AQUATICUS
ComponentsFFH
KeywordsRIBONUCLEOPROTEIN / FFH / SRP / GTPASE / SIGNAL RECOGNITION PARTICLE
Function / homology
Function and homology information


signal recognition particle / signal-recognition-particle GTPase / 7S RNA binding / SRP-dependent cotranslational protein targeting to membrane / GTPase activity / GTP binding / ATP hydrolysis activity
Similarity search - Function
SRP54, nucleotide-binding domain / Signal recognition particle protein / SRP/SRP receptor, N-terminal / Signal recognition particle, SRP54 subunit / Signal recognition particle, SRP54 subunit, M-domain / Signal recognition particle, SRP54 subunit, M-domain superfamily / Signal peptide binding domain / SRP54-type proteins GTP-binding domain signature. / Signal recognition particle SRP54, helical bundle / Signal recognition particle SRP54, N-terminal domain superfamily ...SRP54, nucleotide-binding domain / Signal recognition particle protein / SRP/SRP receptor, N-terminal / Signal recognition particle, SRP54 subunit / Signal recognition particle, SRP54 subunit, M-domain / Signal recognition particle, SRP54 subunit, M-domain superfamily / Signal peptide binding domain / SRP54-type proteins GTP-binding domain signature. / Signal recognition particle SRP54, helical bundle / Signal recognition particle SRP54, N-terminal domain superfamily / SRP54-type protein, helical bundle domain / SRP54-type protein, helical bundle domain / Signal recognition particle, SRP54 subunit, GTPase domain / SRP54-type protein, GTPase domain / SRP54-type protein, GTPase domain / Four Helix Bundle (Hemerythrin (Met), subunit A) / P-loop containing nucleotide triphosphate hydrolases / ATPases associated with a variety of cellular activities / AAA+ ATPase domain / Up-down Bundle / P-loop containing nucleoside triphosphate hydrolase / Rossmann fold / 3-Layer(aba) Sandwich / Mainly Alpha / Alpha Beta
Similarity search - Domain/homology
Signal recognition particle protein
Similarity search - Component
Biological speciesThermus aquaticus (bacteria)
MethodX-RAY DIFFRACTION / MIR / Resolution: 2.05 Å
AuthorsFreymann, D.M. / Keenan, R.J. / Stroud, R.M. / Walter, P.
CitationJournal: Nature / Year: 1997
Title: Structure of the conserved GTPase domain of the signal recognition particle.
Authors: Freymann, D.M. / Keenan, R.J. / Stroud, R.M. / Walter, P.
History
DepositionDec 30, 1996Processing site: BNL
Revision 1.0Dec 31, 1997Provider: repository / Type: Initial release
Revision 1.1Mar 24, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Feb 7, 2024Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Other
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_database_status / pdbx_struct_conn_angle / struct_conn / struct_ref_seq_dif / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_database_status.process_site / _pdbx_struct_conn_angle.ptnr1_auth_comp_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr1_label_asym_id / _pdbx_struct_conn_angle.ptnr1_label_atom_id / _pdbx_struct_conn_angle.ptnr1_label_comp_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr3_auth_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_asym_id / _pdbx_struct_conn_angle.ptnr3_label_atom_id / _pdbx_struct_conn_angle.ptnr3_label_comp_id / _pdbx_struct_conn_angle.ptnr3_label_seq_id / _pdbx_struct_conn_angle.value / _struct_conn.pdbx_dist_value / _struct_conn.ptnr1_auth_comp_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr1_label_comp_id / _struct_conn.ptnr1_label_seq_id / _struct_conn.ptnr2_auth_comp_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id / _struct_conn.ptnr2_label_atom_id / _struct_conn.ptnr2_label_comp_id / _struct_conn.ptnr2_label_seq_id / _struct_ref_seq_dif.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: FFH
hetero molecules


Theoretical massNumber of molelcules
Total (without water)32,2812
Polymers32,2561
Non-polymers241
Water2,180121
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)99.900, 53.910, 57.360
Angle α, β, γ (deg.)90.00, 119.77, 90.00
Int Tables number5
Space group name H-MC121

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Components

#1: Protein FFH


Mass: 32256.250 Da / Num. of mol.: 1 / Fragment: 'NG' GTPASE FRAGMENT OF FFH
Source method: isolated from a genetically manipulated source
Details: THE NG FRAGMENT WAS GENERATED BY PROTEOLYSIS / Source: (gene. exp.) Thermus aquaticus (bacteria) / Cell line: BL21 / Gene: FFH / Plasmid: PET3C / Production host: Escherichia coli (E. coli) / Strain (production host): BL21 (DE3)-[PLYSE] / References: UniProt: O07347
#2: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Mg
#3: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 121 / Source method: isolated from a natural source / Formula: H2O
Sequence detailsFEATURES IN THE FO-FC MAP SUGGEST THAT ALA 48 (BASED ON THE SEQUENCE OF THE T. AQUATICUS FFH GENE) ...FEATURES IN THE FO-FC MAP SUGGEST THAT ALA 48 (BASED ON THE SEQUENCE OF THE T. AQUATICUS FFH GENE) IS THR, SER, OR VAL IN THIS STRUCTURE. THE EXPRESSION CLONE WAS RE-SEQUENCED ND REVEALED A MUTATION (TO THR) INTRODUCED DURING PCR.

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 2.08 Å3/Da / Density % sol: 40.79 %
Crystal growMethod: vapor diffusion, sitting drop / pH: 9
Details: PROTEIN AT 30 MG/ML IN WATER. CRYSTALLIZED AT RT BY SITTING DROP VAPOR DIFFUSION USING 30% PEG MME 550, 50 MM TAPS PH 9.0, 200 MM MGCL2., vapor diffusion - sitting drop
Crystal grow
*PLUS
Method: vapor diffusion, sitting drop
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDChemical formula
130 mg/mlprotein1drop
230 %mPEG5501reservoir
3100 mMTAPS1reservoir
4200 mM1reservoirMgCl2

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU / Wavelength: 1.5418
DetectorType: MAR scanner 300 mm plate / Detector: IMAGE PLATE / Date: Mar 19, 1996 / Details: SUPPER DOUBLE MIRRORS
RadiationMonochromator: DOUBLE CRYSTAL SI(111) / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionHighest resolution: 2.05 Å / Num. obs: 16644 / % possible obs: 99.5 % / Observed criterion σ(I): -3 / Redundancy: 4 % / Biso Wilson estimate: 13.2 Å2 / Rsym value: 0.046
Reflection shellResolution: 2.05→2.12 Å / Redundancy: 3.9 % / Rsym value: 0.137 / % possible all: 98.4
Reflection
*PLUS
Rmerge(I) obs: 0.046
Reflection shell
*PLUS
% possible obs: 98.4 % / Rmerge(I) obs: 0.137

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Processing

Software
NameVersionClassification
X-PLOR3.843model building
X-PLOR3.843refinement
DENZOdata reduction
SCALEPACKdata scaling
X-PLOR3.843phasing
RefinementMethod to determine structure: MIR / Resolution: 2.05→20 Å / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 1
Details: THE ELECTRON DENSITY FOR THE TURN COMPRISING THESE RESIDUES IS NOT YET CORRECTLY MODELED: THR 23, GLU 24, GLU 25.
RfactorNum. reflection% reflectionSelection details
Rfree0.248 1614 9.6 %RANDOM
Rwork0.186 ---
obs0.186 16157 96.4 %-
Displacement parametersBiso mean: 21.2 Å2
Refinement stepCycle: LAST / Resolution: 2.05→20 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2226 0 6 116 2348
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_bond_d0.006
X-RAY DIFFRACTIONx_bond_d_na
X-RAY DIFFRACTIONx_bond_d_prot
X-RAY DIFFRACTIONx_angle_d
X-RAY DIFFRACTIONx_angle_d_na
X-RAY DIFFRACTIONx_angle_d_prot
X-RAY DIFFRACTIONx_angle_deg1.28
X-RAY DIFFRACTIONx_angle_deg_na
X-RAY DIFFRACTIONx_angle_deg_prot
X-RAY DIFFRACTIONx_dihedral_angle_d21.32
X-RAY DIFFRACTIONx_dihedral_angle_d_na
X-RAY DIFFRACTIONx_dihedral_angle_d_prot
X-RAY DIFFRACTIONx_improper_angle_d1.18
X-RAY DIFFRACTIONx_improper_angle_d_na
X-RAY DIFFRACTIONx_improper_angle_d_prot
X-RAY DIFFRACTIONx_mcbond_it
X-RAY DIFFRACTIONx_mcangle_it
X-RAY DIFFRACTIONx_scbond_it
X-RAY DIFFRACTIONx_scangle_it
LS refinement shellResolution: 2.05→2.11 Å / Total num. of bins used: 12
RfactorNum. reflection% reflection
Rfree0.273 109 7.8 %
Rwork0.248 1119 -
obs--88.3 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1PARHCSDX.PROTOPHCSDX.PRO
X-RAY DIFFRACTION2PARHOH.PROTOPHOH.PRO
Software
*PLUS
Name: X-PLOR / Version: 3.843 / Classification: refinement
Refinement
*PLUS
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_dihedral_angle_d
X-RAY DIFFRACTIONx_dihedral_angle_deg21.32
X-RAY DIFFRACTIONx_improper_angle_d
X-RAY DIFFRACTIONx_improper_angle_deg1.18
LS refinement shell
*PLUS
Rfactor obs: 0.248

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