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- PDB-3drc: INVESTIGATION OF THE FUNCTIONAL ROLE OF TRYPTOPHAN-22 IN ESCHERIC... -

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Basic information

Entry
Database: PDB / ID: 3drc
TitleINVESTIGATION OF THE FUNCTIONAL ROLE OF TRYPTOPHAN-22 IN ESCHERICHIA COLI DIHYDROFOLATE REDUCTASE BY SITE-DIRECTED MUTAGENESIS
ComponentsDIHYDROFOLATE REDUCTASE
KeywordsOXIDOREDUCTASE
Function / homology
Function and homology information


methotrexate binding / dihydrofolic acid binding / 10-formyltetrahydrofolate biosynthetic process / response to methotrexate / NADP+ binding / folic acid biosynthetic process / folic acid binding / dihydrofolate metabolic process / dihydrofolate reductase / dihydrofolate reductase activity ...methotrexate binding / dihydrofolic acid binding / 10-formyltetrahydrofolate biosynthetic process / response to methotrexate / NADP+ binding / folic acid biosynthetic process / folic acid binding / dihydrofolate metabolic process / dihydrofolate reductase / dihydrofolate reductase activity / folic acid metabolic process / NADPH binding / tetrahydrofolate biosynthetic process / one-carbon metabolic process / NADP binding / response to xenobiotic stimulus / response to antibiotic / cytosol
Similarity search - Function
Dihydrofolate reductase / Dihydrofolate Reductase, subunit A / Dihydrofolate Reductase, subunit A / Dihydrofolate reductase conserved site / Dihydrofolate reductase (DHFR) domain signature. / Dihydrofolate reductase (DHFR) domain profile. / Dihydrofolate reductase domain / Dihydrofolate reductase / Dihydrofolate reductase-like domain superfamily / 3-Layer(aba) Sandwich / Alpha Beta
Similarity search - Domain/homology
METHOTREXATE / Dihydrofolate reductase
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
MethodX-RAY DIFFRACTION / Resolution: 1.9 Å
AuthorsOatley, S.J. / Kraut, J.
Citation
Journal: Biochemistry / Year: 1991
Title: Investigation of the functional role of tryptophan-22 in Escherichia coli dihydrofolate reductase by site-directed mutagenesis.
Authors: Warren, M.S. / Brown, K.A. / Farnum, M.F. / Howell, E.E. / Kraut, J.
#1: Journal: Biochemistry / Year: 1991
Title: Crystal Structure of Unliganded Escherichia Coli Dihydrofolate Reductase. Ligand-Induced Conformational Changes and Cooperativity in Binding
Authors: Bystroff, C. / Kraut, J.
#2: Journal: Biochemistry / Year: 1990
Title: Crystal Structures of Escherichia Coli Dihydrofolate Reductase: The Nadp+ Holoenzyme and the Folate Nadp+ Ternary Complex. Substrate Binding and a Model for the Transition State
Authors: Bystroff, C. / Oatley, S.J. / Kraut, J.
#3: Journal: Biochemistry / Year: 1990
Title: Crystal Structures of Recombinant Human Dihydrofolate Reductase Complexed with Folate and 5-Deazafolate
Authors: Davies II, J.F. / Delcamp, T.J. / Prendergast, N.J. / Ashford, V.A. / Freisheim, J.H. / Kraut, J.
#4: Journal: Science / Year: 1986
Title: Functional Role of Aspartic Acid-27 in Dihydrofolate Reductase Revealed by Mutagenesis
Authors: Howell, E.E. / Villafranca, J.E. / Warren, M.S. / Oatley, S.J. / Kraut, J.
#5: Journal: J.Biol.Chem. / Year: 1982
Title: Crystal Structures of Escherichia Coli and Lactobacillus Casei Dihydrofolate Reductase Refined at 1.7 Angstroms Resolution. I. General Features and Binding of Methotrexate
Authors: Bolin, J.T. / Filman, D.J. / Matthews, D.A. / Hamlin, R.C. / Kraut, J.
#6: Journal: J.Biol.Chem. / Year: 1982
Title: Crystal Structures of Escherichia Coli and Lactobacillus Casei Dihydrofolate Reductase Refined at 1.7 Angstroms Resolution. II. Environment of Bound Nadph and Implications for Catalysis
Authors: Filman, D.J. / Bolin, J.T. / Matthews, D.A. / Kraut, J.
History
DepositionSep 22, 1992Processing site: BNL
Revision 1.0Jan 31, 1994Provider: repository / Type: Initial release
Revision 1.1Mar 3, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Nov 29, 2017Group: Derived calculations / Other
Category: pdbx_database_status / struct_conf / struct_conf_type
Item: _pdbx_database_status.process_site
Revision 1.4Feb 21, 2024Group: Data collection / Database references / Derived calculations
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / 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_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_comp_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr1_symmetry / _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_comp_id / _pdbx_struct_conn_angle.ptnr3_label_seq_id / _pdbx_struct_conn_angle.ptnr3_symmetry / _pdbx_struct_conn_angle.value / _struct_conn.pdbx_dist_value / _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.ptnr1_symmetry / _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.ptnr2_symmetry / _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

Downloads & links

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Assembly

Deposited unit
A: DIHYDROFOLATE REDUCTASE
B: DIHYDROFOLATE REDUCTASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)37,0617
Polymers36,0412
Non-polymers1,0205
Water6,792377
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)93.120, 93.120, 73.870
Angle α, β, γ (deg.)90.00, 90.00, 120.00
Int Tables number169
Space group name H-MP61
Atom site foot note1: GLY A 95 - GLY A 96 OMEGA ANGLE = 3.516 PEPTIDE BOND DEVIATES SIGNIFICANTLY FROM TRANS CONFORMATION
2: GLY B 95 - GLY B 96 OMEGA ANGLE = 4.003 PEPTIDE BOND DEVIATES SIGNIFICANTLY FROM TRANS CONFORMATION
Noncrystallographic symmetry (NCS)NCS oper: (Code: given
Matrix: (-0.92389, -0.37481, 0.07712), (-0.33855, 0.70671, -0.62125), (0.17835, -0.60007, -0.77981)
Vector: 59.14433, 46.54287, 96.35562)
DetailsTHE TRANSFORMATION PRESENTED ON *MTRIX* RECORDS BELOW WILL YIELD APPROXIMATE COORDINATES FOR CHAIN *A* WHEN APPLIED TO CHAIN *B*.

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Components

#1: Protein DIHYDROFOLATE REDUCTASE


Mass: 18020.326 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (E. coli) / References: UniProt: P0ABQ4, dihydrofolate reductase
#2: Chemical ChemComp-CL / CHLORIDE ION


Mass: 35.453 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Cl
#3: Chemical ChemComp-MTX / METHOTREXATE


Mass: 454.439 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C20H22N8O5
#4: Chemical ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Ca
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 377 / Source method: isolated from a natural source / Formula: H2O
Sequence detailsRESIDUE 154 IS GLU IN THE RT500 STRAIN. IN THE MB1428 STRAIN (ENTRY 4DFR), THIS RESIDUE IS A LYS.

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION

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Sample preparation

CrystalDensity Matthews: 2.56 Å3/Da / Density % sol: 52.03 %
Crystal grow
*PLUS
Temperature: 4 ℃ / Method: vapor diffusion
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-ID
160 mg/mlMTX1drop
20.1 MTris1drop
30.05 Mhistidine1drop
40.05 Mcalcium acetate1drop
523 %ethanol1reservoir
60.1 MTris1reservoir

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Data collection

Reflection
*PLUS
Highest resolution: 1.8 Å / % possible obs: 96 % / Num. measured all: 30609 / Rmerge(I) obs: 0.049

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Processing

SoftwareName: TNT / Classification: refinement
RefinementRfactor obs: 0.156 / Highest resolution: 1.9 Å
Details: MOLECULE DESIGNATED AS CHAIN B BELOW IS PREFERRED FOR STRUCTURAL COMPARISONS BECAUSE IT IS MORE COMPLETE AND LESS PERTURBED BY INTERMOLECULAR CONTACTS.
Refinement stepCycle: LAST / Highest resolution: 1.9 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2508 0 69 377 2954
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONt_bond_d0.022
X-RAY DIFFRACTIONt_angle_deg2.99
X-RAY DIFFRACTIONt_dihedral_angle_d
X-RAY DIFFRACTIONt_incorr_chiral_ct
X-RAY DIFFRACTIONt_pseud_angle
X-RAY DIFFRACTIONt_trig_c_planes
X-RAY DIFFRACTIONt_gen_planes
X-RAY DIFFRACTIONt_it
X-RAY DIFFRACTIONt_nbd
Software
*PLUS
Name: TNT / Classification: refinement
Refine LS restraints
*PLUS
Type: t_angle_d / Dev ideal: 2.99

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