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- PDB-2cmd: THE CRYSTAL STRUCTURE OF E.COLI MALATE DEHYDROGENASE: A COMPLEX O... -

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Basic information

Entry
Database: PDB / ID: 2cmd
TitleTHE CRYSTAL STRUCTURE OF E.COLI MALATE DEHYDROGENASE: A COMPLEX OF THE APOENZYME AND CITRATE AT 1.87 ANGSTROMS RESOLUTION
ComponentsMALATE DEHYDROGENASE
KeywordsOXIDOREDUCTASE(NAD(A)-CHOH(D))
Function / homology
Function and homology information


malate dehydrogenase activity / fermentation / malate dehydrogenase / L-malate dehydrogenase (NAD+) activity / malate metabolic process / anaerobic respiration / extrinsic component of membrane / tricarboxylic acid cycle / glycolytic process / oxidoreductase activity ...malate dehydrogenase activity / fermentation / malate dehydrogenase / L-malate dehydrogenase (NAD+) activity / malate metabolic process / anaerobic respiration / extrinsic component of membrane / tricarboxylic acid cycle / glycolytic process / oxidoreductase activity / protein homodimerization activity / membrane / cytosol / cytoplasm
Similarity search - Function
Malate dehydrogenase, type 1, bacterial / Malate dehydrogenase, type 1 / Malate dehydrogenase, active site / Malate dehydrogenase active site signature. / L-2-Hydroxyisocaproate Dehydrogenase; Chain A, domain 2 / Lactate dehydrogenase/glycoside hydrolase, family 4, C-terminal / L-lactate/malate dehydrogenase / Lactate/malate dehydrogenase, N-terminal / Lactate/malate dehydrogenase, C-terminal / lactate/malate dehydrogenase, NAD binding domain ...Malate dehydrogenase, type 1, bacterial / Malate dehydrogenase, type 1 / Malate dehydrogenase, active site / Malate dehydrogenase active site signature. / L-2-Hydroxyisocaproate Dehydrogenase; Chain A, domain 2 / Lactate dehydrogenase/glycoside hydrolase, family 4, C-terminal / L-lactate/malate dehydrogenase / Lactate/malate dehydrogenase, N-terminal / Lactate/malate dehydrogenase, C-terminal / lactate/malate dehydrogenase, NAD binding domain / lactate/malate dehydrogenase, alpha/beta C-terminal domain / Lactate dehydrogenase/glycoside hydrolase, family 4, C-terminal / NAD(P)-binding Rossmann-like Domain / NAD(P)-binding domain superfamily / Alpha-Beta Complex / Rossmann fold / 3-Layer(aba) Sandwich / Alpha Beta
Similarity search - Domain/homology
CITRIC ACID / Malate dehydrogenase
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
MethodX-RAY DIFFRACTION / Resolution: 1.87 Å
AuthorsHall, M.D. / Banaszak, L.J.
CitationJournal: J.Mol.Biol. / Year: 1992
Title: Crystal structure of Escherichia coli malate dehydrogenase. A complex of the apoenzyme and citrate at 1.87 A resolution.
Authors: Hall, M.D. / Levitt, D.G. / Banaszak, L.J.
History
DepositionSep 23, 1992Processing site: BNL
Revision 1.0Oct 31, 1993Provider: 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 14, 2024Group: Data collection / Database references / Derived calculations
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / 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 / _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: MALATE DEHYDROGENASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)32,6452
Polymers32,4531
Non-polymers1921
Water1,69394
1
A: MALATE DEHYDROGENASE
hetero molecules

A: MALATE DEHYDROGENASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)65,2914
Polymers64,9072
Non-polymers3842
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation2_555-x,y,-z1
Unit cell
Length a, b, c (Å)116.950, 42.900, 84.050
Angle α, β, γ (deg.)90.00, 130.21, 90.00
Int Tables number5
Space group name H-MC121
Atom site foot note1: RESIDUE 120 IS A CIS PROLINE.
DetailsTHERE IS A MONOMER IN THE CRYSTALLOGRAPHIC ASYMMETRIC UNIT. RESIDUES IN THE MONOMER ARE NUMBERED 1 - 312.

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Components

#1: Protein MALATE DEHYDROGENASE


Mass: 32453.312 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (E. coli) / References: UniProt: P61889, malate dehydrogenase
#2: Chemical ChemComp-CIT / CITRIC ACID


Mass: 192.124 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C6H8O7
#3: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 94 / Source method: isolated from a natural source / Formula: H2O

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION

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Sample preparation

CrystalDensity Matthews: 2.48 Å3/Da / Density % sol: 50.4 %
Crystal grow
*PLUS
pH: 5.7 / Method: vapor diffusion
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDChemical formula
15.6 mg/mlprotein1drop
214-16 %(w/v)PEG80001drop
310 mMsodium citrate1drop
41 mMEDTA1drop
52 mMDTT1drop
60.05 %1dropNaN3
710 mMsodium citrate1reservoir
81 mMEDTA1reservoir
92 mMDTT1reservoir
100.05 %1reservoirNaN3
1115-18 %PEG80001reservoir

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Data collection

Reflection
*PLUS
Highest resolution: 1.75 Å / Lowest resolution: 2 Å / Num. obs: 26366 / % possible obs: 99 % / Num. measured all: 128427 / Rmerge(I) obs: 0.059

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Processing

Software
NameClassification
X-PLORmodel building
X-PLORrefinement
X-PLORphasing
RefinementResolution: 1.87→8 Å / Rfactor Rwork: 0.188 / Rfactor obs: 0.188
Refinement stepCycle: LAST / Resolution: 1.87→8 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2782 0 15 282 3079
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_bond_d0.013
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_deg1.362
X-RAY DIFFRACTIONx_angle_deg_na
X-RAY DIFFRACTIONx_angle_deg_prot
X-RAY DIFFRACTIONx_dihedral_angle_d26.097
X-RAY DIFFRACTIONx_dihedral_angle_d_na
X-RAY DIFFRACTIONx_dihedral_angle_d_prot
X-RAY DIFFRACTIONx_improper_angle_d2.242
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
Refinement
*PLUS
Highest resolution: 1.87 Å / Lowest resolution: 8 Å / Rfactor obs: 0.188
Solvent computation
*PLUS
Displacement parameters
*PLUS
Biso mean: 18.18 Å2
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_angle_d1.362
X-RAY DIFFRACTIONx_dihedral_angle_d
X-RAY DIFFRACTIONx_dihedral_angle_deg2.242

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