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- PDB-1kmj: E. coli NifS/CsdB protein at 2.0A with the cysteine persulfide in... -

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Basic information

Entry
Database: PDB / ID: 1kmj
TitleE. coli NifS/CsdB protein at 2.0A with the cysteine persulfide intermediate (residue CSS).
ComponentsSelenocysteine lyase
KeywordsLYASE / persulfide perselenide nifs pyridoxal phosphate / Structural Genomics / PSI / Protein Structure Initiative / New York SGX Research Center for Structural Genomics / NYSGXRC
Function / homology
Function and homology information


selenium compound metabolic process / Hydrolases; Acting on carbon-sulfur bonds; Acting on carbon-sulfur bonds / cysteine sulfinate desulfinase activity / selenocysteine lyase / selenocysteine lyase activity / cysteine desulfurase / cysteine desulfurase activity / cysteine metabolic process / sulfur compound metabolic process / iron-sulfur cluster assembly ...selenium compound metabolic process / Hydrolases; Acting on carbon-sulfur bonds; Acting on carbon-sulfur bonds / cysteine sulfinate desulfinase activity / selenocysteine lyase / selenocysteine lyase activity / cysteine desulfurase / cysteine desulfurase activity / cysteine metabolic process / sulfur compound metabolic process / iron-sulfur cluster assembly / pyridoxal phosphate binding / hydrolase activity / protein homodimerization activity / cytoplasm
Similarity search - Function
Cysteine desulfurase, SufS / Aminotransferase class-V, pyridoxal-phosphate binding site / Aminotransferases class-V pyridoxal-phosphate attachment site. / Aminotransferase class V domain / Aminotransferase class-V / Aspartate Aminotransferase, domain 1 / Aspartate Aminotransferase, domain 1 / Aspartate Aminotransferase; domain 2 / Type I PLP-dependent aspartate aminotransferase-like (Major domain) / Pyridoxal phosphate-dependent transferase, small domain ...Cysteine desulfurase, SufS / Aminotransferase class-V, pyridoxal-phosphate binding site / Aminotransferases class-V pyridoxal-phosphate attachment site. / Aminotransferase class V domain / Aminotransferase class-V / Aspartate Aminotransferase, domain 1 / Aspartate Aminotransferase, domain 1 / Aspartate Aminotransferase; domain 2 / Type I PLP-dependent aspartate aminotransferase-like (Major domain) / Pyridoxal phosphate-dependent transferase, small domain / Pyridoxal phosphate-dependent transferase, major domain / Pyridoxal phosphate-dependent transferase / Alpha-Beta Complex / 3-Layer(aba) Sandwich / Alpha Beta
Similarity search - Domain/homology
PYRIDOXAL-5'-PHOSPHATE / Cysteine desulfurase
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
MethodX-RAY DIFFRACTION / SYNCHROTRON / Started from native (1JF9) / Resolution: 2 Å
AuthorsLima, C.D. / Burley, S.K. / New York SGX Research Center for Structural Genomics (NYSGXRC)
CitationJournal: J.Mol.Biol. / Year: 2002
Title: Analysis of the E. coli NifS CsdB protein at 2.0 A reveals the structural basis for perselenide and persulfide intermediate formation.
Authors: Lima, C.D.
History
DepositionDec 16, 2001Deposition site: RCSB / Processing site: RCSB
Revision 1.0Dec 21, 2001Provider: repository / Type: Initial release
Revision 1.1Apr 27, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Derived calculations / Version format compliance
Revision 1.3Oct 23, 2013Group: Database references
Revision 1.4Feb 3, 2021Group: Database references / Derived calculations / Structure summary
Category: audit_author / struct_conn ...audit_author / struct_conn / struct_ref_seq_dif / struct_site
Item: _audit_author.identifier_ORCID / _struct_conn.pdbx_leaving_atom_flag ..._audit_author.identifier_ORCID / _struct_conn.pdbx_leaving_atom_flag / _struct_ref_seq_dif.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Revision 1.5Aug 16, 2023Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model / struct_conn
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_conn.pdbx_leaving_atom_flag
Revision 1.6Nov 15, 2023Group: Data collection / Category: chem_comp_atom / chem_comp_bond / Item: _chem_comp_atom.atom_id / _chem_comp_bond.atom_id_2

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Selenocysteine lyase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)44,7602
Polymers44,5131
Non-polymers2471
Water11,944663
1
A: Selenocysteine lyase
hetero molecules

A: Selenocysteine lyase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)89,5204
Polymers89,0252
Non-polymers4942
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation7_555y,x,-z1
Buried area7860 Å2
ΔGint-43 kcal/mol
Surface area26920 Å2
MethodPISA, PQS
Unit cell
Length a, b, c (Å)126.418, 126.418, 133.547
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number96
Space group name H-MP43212

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Components

#1: Protein Selenocysteine lyase / NIFS/CSDB / Selenocysteine reductase / Selenocysteine beta-lyase / SCL


Mass: 44512.660 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (E. coli) / Production host: Escherichia coli (E. coli) / References: UniProt: P77444, selenocysteine lyase
#2: Chemical ChemComp-PLP / PYRIDOXAL-5'-PHOSPHATE / VITAMIN B6 Phosphate


Mass: 247.142 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C8H10NO6P
#3: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 663 / Source method: isolated from a natural source / Formula: H2O

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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

Crystal growTemperature: 291 K / Method: vapor diffusion, hanging drop / pH: 7
Details: 4M NACL, pH 7, VAPOR DIFFUSION, HANGING DROP, temperature 291K
Crystal grow
*PLUS
pH: 8
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDDetailsChemical formula
125 mg/mlprotein1drop
210 mMTris-HCl1droppH8.
350 mM1dropNaCl
41 mMdithiothreitol1drop
54-4.5 M1reservoirNaCl
6100 mMMES1reservoirpH6.5

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: NSLS / Beamline: X4A / Wavelength: 0.97948 Å
DetectorType: ADSC QUANTUM 4 / Detector: CCD / Date: Oct 1, 2000
RadiationMonochromator: SAGITALLY FOCUSED / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.97948 Å / Relative weight: 1
ReflectionResolution: 2→20 Å / Num. all: 61210 / Num. obs: 61210 / % possible obs: 83.5 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 3.7 % / Rsym value: 0.066 / Net I/σ(I): 10
Reflection shellResolution: 2→2.07 Å / Mean I/σ(I) obs: 2.2 / Rsym value: 0.31 / % possible all: 75.5
Reflection
*PLUS
Lowest resolution: 20 Å / Num. measured all: 228706 / Rmerge(I) obs: 0.066
Reflection shell
*PLUS
% possible obs: 75.5 % / Rmerge(I) obs: 0.31

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Processing

Software
NameClassification
DENZOdata reduction
SCALEPACKdata scaling
REFMACrefinement
RefinementMethod to determine structure: Started from native (1JF9)
Starting model: 1JF9

1jf9


Resolution: 2→20 Å / Cross valid method: Rfree / σ(F): 0 / σ(I): 0 / Stereochemistry target values: ENGH & HUBER
RfactorNum. reflection% reflectionSelection details
Rfree0.208 3099 5.3 %Random 5% of data
Rwork0.178 ---
all-61210 --
obs-61140 83.5 %-
Refinement stepCycle: LAST / Resolution: 2→20 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms3120 0 15 663 3798
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONp_bond_d0.012
X-RAY DIFFRACTIONp_angle_deg1.8
Refinement
*PLUS
Lowest resolution: 20 Å / σ(I): 0 / σ(F): 0 / % reflection Rfree: 5 % / Rfactor obs: 0.178
Solvent computation
*PLUS
Displacement parameters
*PLUS

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