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- PDB-1r9s: RNA POLYMERASE II STRAND SEPARATED ELONGATION COMPLEX, MATCHED NU... -

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Basic information

Entry
Database: PDB / ID: 1r9s
TitleRNA POLYMERASE II STRAND SEPARATED ELONGATION COMPLEX, MATCHED NUCLEOTIDE
Components
  • (DNA-directed RNA polymerase II ...) x 5
  • (DNA-directed RNA polymerases I, II, and III ...) x 5
  • DNA strand
  • RNA strand
KeywordsTRANSCRIPTION/DNA-RNA HYBRID / TRANSCRIPTION / MRNA / MULTIPROTEIN COMPLEX / MOLECULAR MACHINE / DNA / TRANSCRIPTION-DNA-RNA COMPLEX / TRANSCRIPTION-DNA-RNA HYBRID complex
Function / homology
Function and homology information


RNA Polymerase I Transcription Initiation / Processing of Capped Intron-Containing Pre-mRNA / RNA Polymerase III Transcription Initiation From Type 2 Promoter / RNA Pol II CTD phosphorylation and interaction with CE / Formation of the Early Elongation Complex / mRNA Capping / RNA polymerase II transcribes snRNA genes / TP53 Regulates Transcription of DNA Repair Genes / termination of RNA polymerase II transcription / RNA Polymerase II Promoter Escape ...RNA Polymerase I Transcription Initiation / Processing of Capped Intron-Containing Pre-mRNA / RNA Polymerase III Transcription Initiation From Type 2 Promoter / RNA Pol II CTD phosphorylation and interaction with CE / Formation of the Early Elongation Complex / mRNA Capping / RNA polymerase II transcribes snRNA genes / TP53 Regulates Transcription of DNA Repair Genes / termination of RNA polymerase II transcription / RNA Polymerase II Promoter Escape / RNA Polymerase II Transcription Pre-Initiation And Promoter Opening / RNA Polymerase II Transcription Initiation / RNA Polymerase II Transcription Initiation And Promoter Clearance / RNA Polymerase II Pre-transcription Events / RNA-templated transcription / termination of RNA polymerase III transcription / Formation of TC-NER Pre-Incision Complex / transcription initiation at RNA polymerase III promoter / maintenance of transcriptional fidelity during transcription elongation by RNA polymerase II / termination of RNA polymerase I transcription / RNA Polymerase I Promoter Escape / nucleolar large rRNA transcription by RNA polymerase I / Gap-filling DNA repair synthesis and ligation in TC-NER / transcription by RNA polymerase I / transcription initiation at RNA polymerase I promoter / Estrogen-dependent gene expression / transcription by RNA polymerase III / RNA polymerase II activity / Dual incision in TC-NER / transcription elongation by RNA polymerase I / transcription-coupled nucleotide-excision repair / tRNA transcription by RNA polymerase III / RNA polymerase I complex / RNA polymerase I activity / RNA polymerase III complex / translesion synthesis / RNA polymerase II, core complex / transcription initiation at RNA polymerase II promoter / transcription elongation by RNA polymerase II / ribonucleoside binding / DNA-directed 5'-3' RNA polymerase activity / DNA-directed RNA polymerase / cytoplasmic stress granule / peroxisome / ribosome biogenesis / transcription by RNA polymerase II / nucleic acid binding / protein dimerization activity / mRNA binding / nucleolus / mitochondrion / DNA binding / zinc ion binding / nucleoplasm / nucleus / metal ion binding / cytoplasm
Similarity search - Function
RNA polymerase II, heptapeptide repeat, eukaryotic / RNA polymerase Rpb1, domain 6 / RNA polymerase Rpb1, domain 6 / RNA polymerase Rpb1 C-terminal repeat / Eukaryotic RNA polymerase II heptapeptide repeat. / RNA polymerase Rpb1, domain 7 / RNA polymerase Rpb1, domain 7 superfamily / RNA polymerase Rpb1, domain 7 / Pol II subunit B9, C-terminal zinc ribbon / RNA polymerase RBP11 ...RNA polymerase II, heptapeptide repeat, eukaryotic / RNA polymerase Rpb1, domain 6 / RNA polymerase Rpb1, domain 6 / RNA polymerase Rpb1 C-terminal repeat / Eukaryotic RNA polymerase II heptapeptide repeat. / RNA polymerase Rpb1, domain 7 / RNA polymerase Rpb1, domain 7 superfamily / RNA polymerase Rpb1, domain 7 / Pol II subunit B9, C-terminal zinc ribbon / RNA polymerase RBP11 / Zinc finger TFIIS-type signature. / RNA polymerase Rpb2, domain 5 / RNA polymerase Rpb2, domain 5 / RNA polymerase Rpb2, domain 4 / RNA polymerase Rpb2, domain 4 / DNA-directed RNA polymerase, M/15kDa subunit / RNA polymerases M/15 Kd subunit / RNA polymerase subunit 9 / DNA-directed RNA polymerase M, 15kDa subunit, conserved site / RNA polymerases M / 15 Kd subunits signature. / DNA-directed RNA polymerase subunit/transcription factor S / : / RNA polymerase, Rpb8 / DNA-directed RNA polymerases I, II, and III subunit RPABC4 / RNA polymerase Rpb8 / RNA polymerase subunit 8 / RNA polymerase, Rpb5, N-terminal / RNA polymerase Rpb5, N-terminal domain superfamily / RNA polymerase Rpb5, N-terminal domain / DNA-directed RNA polymerase subunit RPABC5/Rpb10 / RNA polymerases, subunit N, zinc binding site / RNA polymerase subunit RPB10 / RNA polymerases N / 8 kDa subunit / RNA polymerases N / 8 Kd subunits signature. / DNA-directed RNA polymerase, subunit RPB6 / DNA directed RNA polymerase, 7 kDa subunit / RNA polymerase archaeal subunit P/eukaryotic subunit RPABC4 / RNA polymerase, subunit H/Rpb5, conserved site / RNA polymerases H / 23 Kd subunits signature. / RNA polymerase subunit CX / DNA-directed RNA polymerase, 30-40kDa subunit, conserved site / DNA-directed RNA polymerase subunit Rpo3/Rpb3/RPAC1 / RNA polymerases D / 30 to 40 Kd subunits signature. / DNA-directed RNA polymerase Rpb11, 13-16kDa subunit, conserved site / DNA-directed RNA polymerase subunit Rpo11 / RNA polymerases L / 13 to 16 Kd subunits signature. / Zinc finger, TFIIS-type / DNA-directed RNA polymerase subunit Rpo5/Rpb5 / Transcription factor S-II (TFIIS) / Zinc finger TFIIS-type profile. / C2C2 Zinc finger / RNA polymerase subunit RPABC4/transcription elongation factor Spt4 / DNA-directed RNA polymerase, RBP11-like dimerisation domain / RNA polymerase Rpb3/Rpb11 dimerisation domain / RNA polymerase, subunit H/Rpb5 C-terminal / RPB5-like RNA polymerase subunit superfamily / RNA polymerase Rpb5, C-terminal domain / Archaeal Rpo6/eukaryotic RPB6 RNA polymerase subunit / DNA-directed RNA polymerase, 14-18kDa subunit, conserved site / RNA polymerases K / 14 to 18 Kd subunits signature. / RNA polymerase Rpb6 / RNA polymerase, subunit omega/Rpo6/RPB6 / RNA polymerase Rpb6 / RNA polymerase Rpb1, domain 3 superfamily / RPB6/omega subunit-like superfamily / RNA polymerase Rpb1, clamp domain superfamily / RNA polymerase Rpb2, domain 2 superfamily / RNA polymerase Rpb1, domain 3 / RNA polymerase Rpb1, domain 3 / DNA-directed RNA polymerase, subunit beta-prime / RNA polymerase Rpb1, domain 1 / RNA polymerase Rpb1, domain 1 / DNA-directed RNA polymerase, insert domain / DNA-directed RNA polymerase, RpoA/D/Rpb3-type / RNA polymerase Rpb3/RpoA insert domain / RNA polymerase Rpb3/Rpb11 dimerisation domain / RNA polymerases D / RNA polymerase, alpha subunit / RNA polymerase Rpb1, domain 5 / RNA polymerase Rpb1, domain 4 / RNA polymerase Rpb1, domain 2 / RNA polymerase Rpb1, domain 5 / RNA polymerase Rpb1, domain 4 / RNA polymerase, beta subunit, protrusion / RNA polymerase beta subunit / RNA polymerase, N-terminal / RNA polymerase Rpb1, funnel domain superfamily / RNA polymerase I subunit A N-terminus / DNA-directed RNA polymerase, insert domain superfamily / RNA polymerase, RBP11-like subunit / RNA polymerase Rpb2, domain 2 / RNA polymerase Rpb2, domain 2 / RNA polymerase, beta subunit, conserved site / RNA polymerase Rpb2, domain 7 / RNA polymerase Rpb2, domain 3 / RNA polymerase Rpb2, OB-fold / RNA polymerase Rpb2, domain 7 / RNA polymerase Rpb2, domain 3 / RNA polymerases beta chain signature. / DNA-directed RNA polymerase, subunit 2, hybrid-binding domain
Similarity search - Domain/homology
URIDINE 5'-TRIPHOSPHATE / DNA / DNA (> 10) / RNA / DNA-directed RNA polymerase II subunit RPB1 / DNA-directed RNA polymerase II subunit RPB2 / DNA-directed RNA polymerase II subunit RPB3 / DNA-directed RNA polymerases I, II, and III subunit RPABC1 / DNA-directed RNA polymerases I, II, and III subunit RPABC2 / DNA-directed RNA polymerases I, II, and III subunit RPABC3 ...URIDINE 5'-TRIPHOSPHATE / DNA / DNA (> 10) / RNA / DNA-directed RNA polymerase II subunit RPB1 / DNA-directed RNA polymerase II subunit RPB2 / DNA-directed RNA polymerase II subunit RPB3 / DNA-directed RNA polymerases I, II, and III subunit RPABC1 / DNA-directed RNA polymerases I, II, and III subunit RPABC2 / DNA-directed RNA polymerases I, II, and III subunit RPABC3 / DNA-directed RNA polymerases I, II, and III subunit RPABC5 / DNA-directed RNA polymerase II subunit RPB9 / DNA-directed RNA polymerase II subunit RPB11 / DNA-directed RNA polymerases I, II, and III subunit RPABC4
Similarity search - Component
Biological speciesSaccharomyces cerevisiae (brewer's yeast)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 4.25 Å
AuthorsWestover, K.D. / Bushnell, D.A. / Kornberg, R.D.
CitationJournal: Cell(Cambridge,Mass.) / Year: 2004
Title: Structural basis of transcription: nucleotide selection by rotation in the RNA polymerase II active center.
Authors: Westover, K.D. / Bushnell, D.A. / Kornberg, R.D.
History
DepositionOct 30, 2003Deposition site: RCSB / Processing site: RCSB
Revision 1.0Nov 16, 2004Provider: repository / Type: Initial release
Revision 1.1Oct 16, 2007Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Aug 23, 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 / pdbx_struct_conn_angle / struct_conn / struct_conn_type / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_struct_conn_angle.ptnr1_auth_asym_id / _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.ptnr2_auth_asym_id / _pdbx_struct_conn_angle.ptnr2_auth_comp_id / _pdbx_struct_conn_angle.ptnr2_auth_seq_id / _pdbx_struct_conn_angle.ptnr2_label_asym_id / _pdbx_struct_conn_angle.ptnr2_label_atom_id / _pdbx_struct_conn_angle.ptnr2_label_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_asym_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.conn_type_id / _struct_conn.id / _struct_conn.pdbx_dist_value / _struct_conn.pdbx_leaving_atom_flag / _struct_conn.ptnr1_auth_asym_id / _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_asym_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_conn_type.id / _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

Downloads & links

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Assembly

Deposited unit
R: RNA strand
T: DNA strand
A: DNA-directed RNA polymerase II largest subunit
B: DNA-directed RNA polymerase II 140 kDa polypeptide
C: DNA-directed RNA polymerase II 45 kDa polypeptide
E: DNA-directed RNA polymerases I, II, and III 27 kDa polypeptide
F: DNA-directed RNA polymerases I, II, and III 23 kDa polypeptide
H: DNA-directed RNA polymerases I, II, and III 14.5 kDa polypeptide
I: DNA-directed RNA polymerase II 14.2 kDa polypeptide
J: DNA-directed RNA polymerases I, II, and III 8.3 kDa polypeptide
K: DNA-directed RNA polymerase II 13.6 kDa polypeptide
L: DNA-directed RNA polymerases I, II, and III 7.7 kDa polypeptide
hetero molecules


Theoretical massNumber of molelcules
Total (without water)478,16223
Polymers477,10612
Non-polymers1,05611
Water00
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)169.647, 222.338, 194.316
Angle α, β, γ (deg.)90.00, 101.67, 90.00
Int Tables number5
Space group name H-MC121

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Components

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DNA-directed RNA polymerase II ... , 5 types, 5 molecules ABCIK

#3: Protein DNA-directed RNA polymerase II largest subunit / 2.7.7.6 / B220


Mass: 191821.578 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / Strain: DELTA-RPB4 / References: UniProt: P04050, DNA-directed RNA polymerase
#4: Protein DNA-directed RNA polymerase II 140 kDa polypeptide / 2.7.7.6 / B150 / RNA polymerase II subunit 2


Mass: 138937.297 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / Strain: DELTA-RPB4 / References: UniProt: P08518, DNA-directed RNA polymerase
#5: Protein DNA-directed RNA polymerase II 45 kDa polypeptide / 2.7.7.6 / B44.5


Mass: 35330.457 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / Strain: DELTA-RPB4 / References: UniProt: P16370, DNA-directed RNA polymerase
#9: Protein DNA-directed RNA polymerase II 14.2 kDa polypeptide / 2.7.7.6 / B12.6


Mass: 14308.161 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / Strain: DELTA-RPB4 / References: UniProt: P27999, DNA-directed RNA polymerase
#11: Protein DNA-directed RNA polymerase II 13.6 kDa polypeptide / 2.7.7.6 / B13.6


Mass: 13633.493 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / Strain: DELTA-RPB4 / References: UniProt: P38902, DNA-directed RNA polymerase

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DNA-directed RNA polymerases I, II, and III ... , 5 types, 5 molecules EFHJL

#6: Protein DNA-directed RNA polymerases I, II, and III 27 kDa polypeptide / 2.7.7.6 / ABC27


Mass: 25117.094 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / Strain: DELTA-RPB4 / References: UniProt: P20434, DNA-directed RNA polymerase
#7: Protein DNA-directed RNA polymerases I, II, and III 23 kDa polypeptide / 2.7.7.6 / ABC23


Mass: 17931.834 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / Strain: DELTA-RPB4 / References: UniProt: P20435, DNA-directed RNA polymerase
#8: Protein DNA-directed RNA polymerases I, II, and III 14.5 kDa polypeptide / 2.7.7.6 / ABC14.4


Mass: 16525.363 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / Strain: DELTA-RPB4 / References: UniProt: P20436, DNA-directed RNA polymerase
#10: Protein DNA-directed RNA polymerases I, II, and III 8.3 kDa polypeptide / 2.7.7.6 / ABC10-beta / ABC8


Mass: 8290.732 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / Strain: DELTA-RPB4 / References: UniProt: P22139, DNA-directed RNA polymerase
#12: Protein DNA-directed RNA polymerases I, II, and III 7.7 kDa polypeptide / 2.7.7.6 / ABC10-alpha


Mass: 7729.969 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / Strain: DELTA-RPB4 / References: UniProt: P40422, DNA-directed RNA polymerase

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RNA chain / DNA chain , 2 types, 2 molecules RT

#1: RNA chain RNA strand


Mass: 3264.036 Da / Num. of mol.: 1 / Source method: obtained synthetically / Details: TRANSCRIPT
#2: DNA chain DNA strand


Mass: 4215.755 Da / Num. of mol.: 1 / Source method: obtained synthetically / Details: TEMPLATE

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Non-polymers , 3 types, 11 molecules

#13: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Mg
#14: Chemical ChemComp-UTP / URIDINE 5'-TRIPHOSPHATE


Mass: 484.141 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C9H15N2O15P3 / Comment: UTP*YM
#15: Chemical
ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 8 / Source method: obtained synthetically / Formula: Zn

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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: 3.76 Å3/Da / Density % sol: 67.27 %
Crystal growTemperature: 298 K / Method: vapor diffusion, hanging drop / pH: 6
Details: PEG 6000, Ammonium hydrogen phosphate, sodium dihydrogen phosphate, dioxane, DTT, pH 6.00, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Components of the solutions
IDNameCrystal-IDSol-ID
1PEG 600011
2Ammonium hydrogen phosphate11
3sodium dihydrogen phosphate11
4dioxane11
5DTT11
6H2O11
7PEG 600012
8Ammonium hydrogen phosphate12
9sodium dihydrogen phosphate12
10H2O12

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: SSRL / Beamline: BL11-1 / Wavelength: 0.98
DetectorType: ADSC QUANTUM 4 / Detector: CCD / Date: Feb 21, 2003
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.98 Å / Relative weight: 1
ReflectionResolution: 4.25→40 Å / Num. obs: 50043 / % possible obs: 95.8 % / Redundancy: 2.5 %
Reflection shellResolution: 4.25→4.3 Å / Rmerge(I) obs: 0.36 / % possible all: 93.2

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Processing

Software
NameVersionClassification
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
CNS1.1refinement
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB entry 1I6H

1i6h


Resolution: 4.25→40 Å / Rfactor Rfree error: 0.006 / Data cutoff high absF: 270469.75 / Data cutoff low absF: 0 / Isotropic thermal model: GROUP / Cross valid method: THROUGHOUT / σ(F): 0
RfactorNum. reflection% reflectionSelection details
Rfree0.398 4998 10.1 %RANDOM
Rwork0.349 ---
all0.367 ---
obs0.354 50043 95.8 %-
Solvent computationSolvent model: FLAT MODEL / Bsol: 71.3482 Å2 / ksol: 0.247309 e/Å3
Displacement parametersBiso mean: 130.3 Å2
Baniso -1Baniso -2Baniso -3
1-0 Å20 Å20 Å2
2--0 Å20 Å2
3---0 Å2
Refine analyze
FreeObs
Luzzati coordinate error1.19 Å0.94 Å
Luzzati d res low-5 Å
Luzzati sigma a0.76 Å1.17 Å
Refinement stepCycle: LAST / Resolution: 4.25→40 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms27956 496 39 0 28491
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_bond_d0.017
X-RAY DIFFRACTIONc_bond_d_na
X-RAY DIFFRACTIONc_bond_d_prot
X-RAY DIFFRACTIONc_angle_d
X-RAY DIFFRACTIONc_angle_d_na
X-RAY DIFFRACTIONc_angle_d_prot
X-RAY DIFFRACTIONc_angle_deg1.9
X-RAY DIFFRACTIONc_angle_deg_na
X-RAY DIFFRACTIONc_angle_deg_prot
X-RAY DIFFRACTIONc_dihedral_angle_d23.5
X-RAY DIFFRACTIONc_dihedral_angle_d_na
X-RAY DIFFRACTIONc_dihedral_angle_d_prot
X-RAY DIFFRACTIONc_improper_angle_d1.22
X-RAY DIFFRACTIONc_improper_angle_d_na
X-RAY DIFFRACTIONc_improper_angle_d_prot
X-RAY DIFFRACTIONc_mcbond_it
X-RAY DIFFRACTIONc_mcangle_it
X-RAY DIFFRACTIONc_scbond_it
X-RAY DIFFRACTIONc_scangle_it
LS refinement shellResolution: 4.25→4.46 Å / Rfactor Rfree error: 0.022 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.488 490 10.3 %
Rwork0.448 4272 -
obs--55.7 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1PROTEIN_REP.PARAMPROTEIN.TOP
X-RAY DIFFRACTION2ION.PARAMION.TOP
X-RAY DIFFRACTION3DNA-RNA.PARAMDNA-RNA.TOP
X-RAY DIFFRACTION5&_1_PARAMETER_INFILE_5

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