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- PDB-7qsf: Structure of E.coli Class 2 L-asparaginase EcAIII, mutant RDM1-12... -

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Basic information

Entry
Database: PDB / ID: 7qsf
TitleStructure of E.coli Class 2 L-asparaginase EcAIII, mutant RDM1-12 (G206C, R207T, D210A, S211A)
Components
  • Isoaspartyl peptidase
  • Isoaspartyl peptidase subunit beta
KeywordsHYDROLASE / L-asparaginase / Ntn-hydrolase / EcAIII
Function / homology
Function and homology information


beta-aspartyl-peptidase / asparagine catabolic process via L-aspartate / asparaginase activity / beta-aspartyl-peptidase activity / protein autoprocessing / hydrolase activity / cytoplasm
Similarity search - Function
Peptidase T2, asparaginase 2 / Asparaginase / Nucleophile aminohydrolases, N-terminal
Similarity search - Domain/homology
Isoaspartyl peptidase
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 1.6 Å
AuthorsLoch, J.I. / Kadziolka, K. / Jaskolski, M.
Funding support Poland, 1items
OrganizationGrant numberCountry
Polish National Science Centre2020/38/E/NZ1/00035 Poland
CitationJournal: Acta Crystallogr D Struct Biol / Year: 2022
Title: Structural and biophysical studies of new L-asparaginase variants: lessons from random mutagenesis of the prototypic Escherichia coli Ntn-amidohydrolase.
Authors: Loch, J.I. / Klonecka, A. / Kadziolka, K. / Bonarek, P. / Barciszewski, J. / Imiolczyk, B. / Brzezinski, K. / Gilski, M. / Jaskolski, M.
History
DepositionJan 13, 2022Deposition site: PDBE / Processing site: PDBE
Revision 1.0Jul 13, 2022Provider: repository / Type: Initial release
Revision 1.1Jan 31, 2024Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond / pdbx_initial_refinement_model

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
AAA: Isoaspartyl peptidase
BBB: Isoaspartyl peptidase subunit beta
CCC: Isoaspartyl peptidase
DDD: Isoaspartyl peptidase subunit beta
hetero molecules


Theoretical massNumber of molelcules
Total (without water)66,8618
Polymers66,7444
Non-polymers1174
Water10,755597
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area14510 Å2
ΔGint-130 kcal/mol
Surface area21060 Å2
MethodPISA
Unit cell
Length a, b, c (Å)51.623, 75.052, 149.137
Angle α, β, γ (deg.)90.000, 90.000, 90.000
Int Tables number19
Space group name H-MP212121

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Components

#1: Protein Isoaspartyl peptidase / Beta-aspartyl-peptidase / EcAIII / Isoaspartyl dipeptidase


Mass: 19013.773 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (E. coli) / Gene: iaaA, spt, ybiK, b0828, JW0812 / Plasmid: pET11d / Production host: Escherichia coli BL21 (bacteria) / Variant (production host): Gold / References: UniProt: P37595, beta-aspartyl-peptidase
#2: Protein Isoaspartyl peptidase subunit beta


Mass: 14358.137 Da / Num. of mol.: 2 / Mutation: G206C, R207T, D210A, S211A
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (E. coli) / Gene: iaaA, spt, ybiK, b0828, JW0812 / Plasmid: pET11d / Production host: Escherichia coli BL21 (bacteria) / Variant (production host): Gold / References: UniProt: P37595
#3: Chemical ChemComp-NA / SODIUM ION


Mass: 22.990 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Na
#4: Chemical ChemComp-CL / CHLORIDE ION


Mass: 35.453 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Cl
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 597 / Source method: isolated from a natural source / Formula: H2O
Has ligand of interestN

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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: 2.16 Å3/Da / Density % sol: 43.17 %
Crystal growTemperature: 293 K / Method: vapor diffusion, hanging drop / pH: 8.5 / Details: 30% PEG 6000, 0.2 M MgCl2 in 0.1M Tris-HCl pH 8.5

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Data collection

DiffractionMean temperature: 100 K / Serial crystal experiment: N
Diffraction sourceSource: SEALED TUBE / Type: Agilent SuperNova / Wavelength: 1.54056 Å
DetectorType: RIGAKU HyPix-6000HE / Detector: PIXEL / Date: Jul 16, 2020
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.54056 Å / Relative weight: 1
ReflectionResolution: 1.6→19.05 Å / Num. obs: 69731 / % possible obs: 90.7 % / Redundancy: 2.3 % / CC1/2: 0.995 / Rmerge(I) obs: 0.056 / Rrim(I) all: 0.07 / Net I/σ(I): 9.8
Reflection shellResolution: 1.6→1.63 Å / Redundancy: 1.8 % / Rmerge(I) obs: 0.22 / Num. unique obs: 3274 / CC1/2: 0.883 / Rrim(I) all: 0.293 / % possible all: 86.8

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Processing

Software
NameVersionClassification
REFMAC5.8.0267refinement
CrysalisProdata reduction
Aimlessdata scaling
PHASERphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 2ZAL
Resolution: 1.6→19.05 Å / Cor.coef. Fo:Fc: 0.954 / Cor.coef. Fo:Fc free: 0.928 / SU B: 3.741 / SU ML: 0.067 / Cross valid method: FREE R-VALUE / ESU R: 0.091 / ESU R Free: 0.093
RfactorNum. reflection% reflection
Rfree0.2109 1039 1.491 %
Rwork0.1737 68661 -
all0.174 --
obs-69700 90.157 %
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK BULK SOLVENT
Displacement parametersBiso mean: 16.778 Å2
Baniso -1Baniso -2Baniso -3
1--0.082 Å2-0 Å2-0 Å2
2--0.022 Å2-0 Å2
3---0.06 Å2
Refinement stepCycle: LAST / Resolution: 1.6→19.05 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms4198 0 4 597 4799
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.010.0134303
X-RAY DIFFRACTIONr_bond_other_d0.0150.0154148
X-RAY DIFFRACTIONr_angle_refined_deg1.6721.6315845
X-RAY DIFFRACTIONr_angle_other_deg1.651.5699523
X-RAY DIFFRACTIONr_dihedral_angle_1_deg6.825590
X-RAY DIFFRACTIONr_dihedral_angle_2_deg29.11922.143196
X-RAY DIFFRACTIONr_dihedral_angle_3_deg12.63215686
X-RAY DIFFRACTIONr_dihedral_angle_4_deg14.5111528
X-RAY DIFFRACTIONr_chiral_restr0.0830.2581
X-RAY DIFFRACTIONr_gen_planes_refined0.0080.024995
X-RAY DIFFRACTIONr_gen_planes_other0.0050.02933
X-RAY DIFFRACTIONr_nbd_refined0.2120.2754
X-RAY DIFFRACTIONr_symmetry_nbd_other0.1820.23691
X-RAY DIFFRACTIONr_nbtor_refined0.1530.22034
X-RAY DIFFRACTIONr_symmetry_nbtor_other0.070.21816
X-RAY DIFFRACTIONr_xyhbond_nbd_refined0.1570.2367
X-RAY DIFFRACTIONr_metal_ion_refined0.1210.25
X-RAY DIFFRACTIONr_symmetry_nbd_refined0.2450.211
X-RAY DIFFRACTIONr_nbd_other0.2170.252
X-RAY DIFFRACTIONr_symmetry_xyhbond_nbd_refined0.2090.233
X-RAY DIFFRACTIONr_mcbond_it1.8710.3322327
X-RAY DIFFRACTIONr_mcbond_other1.8630.3312326
X-RAY DIFFRACTIONr_mcangle_it2.3220.4852904
X-RAY DIFFRACTIONr_mcangle_other2.3220.4852905
X-RAY DIFFRACTIONr_scbond_it4.460.6631976
X-RAY DIFFRACTIONr_scbond_other4.4590.6631977
X-RAY DIFFRACTIONr_scangle_it5.70.8522933
X-RAY DIFFRACTIONr_scangle_other5.6990.8522934
X-RAY DIFFRACTIONr_lrange_it7.316.4534684
X-RAY DIFFRACTIONr_lrange_other7.2786.2384658
LS refinement shell
Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection RworkRefine-ID% reflection obs (%)
1.6-1.6420.28870.2554865X-RAY DIFFRACTION88.2709
1.642-1.6870.279780.235073X-RAY DIFFRACTION93.1633
1.687-1.7350.236640.2224952X-RAY DIFFRACTION94.1441
1.735-1.7890.259810.2074867X-RAY DIFFRACTION94.4635
1.789-1.8470.236780.214688X-RAY DIFFRACTION94.5823
1.847-1.9120.274600.2134610X-RAY DIFFRACTION95.209
1.912-1.9840.294640.2014439X-RAY DIFFRACTION95.2613
1.984-2.0650.181560.1844228X-RAY DIFFRACTION94.1953
2.065-2.1570.214590.1793953X-RAY DIFFRACTION91.9972
2.157-2.2620.219720.1683724X-RAY DIFFRACTION90.77
2.262-2.3840.171510.1533507X-RAY DIFFRACTION89.3745
2.384-2.5290.21520.1513285X-RAY DIFFRACTION88.0475
2.529-2.7030.173500.1513028X-RAY DIFFRACTION86.4121
2.703-2.920.22340.1492838X-RAY DIFFRACTION86.1428
2.92-3.1980.163330.1492537X-RAY DIFFRACTION83.7952
3.198-3.5740.151270.1512281X-RAY DIFFRACTION82.3697
3.574-4.1260.208270.1421985X-RAY DIFFRACTION81.031
4.126-5.0490.191320.1341738X-RAY DIFFRACTION82.7489
5.049-7.1240.204200.1751370X-RAY DIFFRACTION82.8367
7.124-19.050.121140.158693X-RAY DIFFRACTION70.2783
Refinement TLS params.

Method: refined / Refine-ID: X-RAY DIFFRACTION

IDL112)L122)L132)L222)L232)L332)S11 (Å °)S12 (Å °)S13 (Å °)S21 (Å °)S22 (Å °)S23 (Å °)S31 (Å °)S32 (Å °)S33 (Å °)T112)T122)T132)T222)T232)T332)Origin x (Å)Origin y (Å)Origin z (Å)
10.0317-0.1985-0.08791.38470.62350.3006-0.0148-0.00060.03550.20670.0224-0.12870.04950.0188-0.00760.1709-0.0125-0.06380.13280.02570.171217.9839-5.794251.5948
20.0332-0.2719-0.20424.40153.2032.33370.09270.04170.03510.1880.1171-0.330.10990.0409-0.20970.31320.19020.03010.15760.05920.08488.897111.999560.8037
30.1771-0.04790.00980.11910.03170.1095-0.0211-0.019-0.02980.05320.00870.0281-0.00280.0010.01230.14860.0105-0.00780.13990.00920.1387.1177-5.979154.5078
40.1793-0.0644-0.00050.2751-0.12230.0663-0.0401-0.01240.0087-0.00160.03720.00720.02790.00370.00290.12610.0033-0.00570.1396-0.00210.15513.3258-9.252537.8006
51.48881.2111-0.3721.0325-0.32360.56970.00660.0366-0.0689-0.05610.0272-0.0039-0.0424-0.0502-0.03380.1244-0.009-0.00540.1351-0.00760.1633-4.4178-11.821534.1656
60.1673-0.45330.03441.9785-0.03770.013-0.07580.0238-0.03450.12640.0890.1187-0.03230.0065-0.01320.15370.01120.02110.13320.0050.1462-8.8115.811649.3705
71.6385-1.045-0.20021.08710.11070.14850.0264-0.00530.00820.0106-0.0444-0.0392-0.03310.01970.0180.12020.0037-0.01460.1490.00860.141315.0513-8.676645.0982
80.2774-0.415-0.04121.21540.76590.865-0.00240.05760.07690.0917-0.0343-0.07040.0917-0.00550.03670.14220.00070.00160.15520.01270.1437-2.60897.98538.7054
90.0887-0.11750.06970.1597-0.11520.3384-0.02610.0087-0.0340.0335-0.00850.0257-0.05650.05450.03460.126-0.0114-0.00770.15640.00620.152419.19091.09837.3877
100.4299-0.272-0.04090.5445-0.20940.19550.0255-0.0152-0.0160.0302-0.0144-0.0503-0.08080.0514-0.01110.1418-0.0247-0.01670.1450.00120.14922.22014.766543.2532
110.02560.1120.12970.68960.56370.6678-0.00250.0086-0.00030.09050.0379-0.0781-0.02160.0458-0.03540.1418-0.0006-0.02440.14120.00980.153618.027-0.106955.3274
120.1020.04260.66150.02080.28174.33510.01490.0274-0.01470.00350.03990.0072-0.05160.2213-0.05480.1757-0.01850.00680.13690.02790.124415.33718.634657.881
130.14610.58010.10142.37590.20190.7553-0.00790.0028-0.0053-0.0886-0.0015-0.02720.02920.04050.00950.1267-0.01240.0190.1608-0.00380.140316.86445.86799.7344
144.82515.58630.05786.47430.04840.06490.0827-0.2192-0.0983-0.006-0.1999-0.13470.1813-0.0480.11720.5591-0.1310.22110.1263-0.02930.11579.6628-9.7494-2.5258
150.10510.39920.26961.73010.61811.5192-0.00480.0002-0.0101-0.0072-0.0004-0.0503-0.0234-0.09920.00520.141-0.00640.01020.1839-0.01530.10698.4421-0.2676-2.9946
160.65040.3583-0.00330.2206-0.07010.2657-0.03420.06330.0189-0.00990.01060.0148-0.0274-0.01420.02360.1427-0.0138-0.00540.1561-0.00390.13076.51768.31339.3056
170.3146-0.0036-0.01940.0094-0.03620.2433-0.01020.01960.01570.01710.01450.0095-0.0185-0.0072-0.00440.1311-0.0084-0.00260.1393-0.01370.15371.83718.084822.9983
180.2744-0.2545-0.33361.36250.59830.62140.00460.0515-0.0155-0.0247-0.04540.01870.0063-0.16040.04080.121-0.0182-0.00810.1511-0.01880.1367-6.84540.18715.1864
191.4771.22250.35731.11610.18520.256-0.02520.02720.00950.014-0.03840.0175-0.00610.05010.06360.1268-0.02510.00030.1502-0.00230.14514.05029.901315.5049
200.77040.25120.83212.01940.90551.10910.0057-0.07520.0467-0.004-0.0415-0.08230.0181-0.09130.03580.1423-0.04410.01520.113-0.03880.1885-0.9828-10.709220.188
210.42420.33150.03740.4811-0.18640.21410.00770.00830.008-0.0177-0.02710.00170.02040.03410.01950.1292-0.00640.00530.1515-0.00160.147115.5907-0.008224.0005
220.39630.3938-0.5660.4123-0.36093.5823-0.0483-0.0122-0.115-0.08590.0024-0.1027-0.21320.14380.04590.0837-0.0169-0.00480.17190.00910.151229.51960.609621.5875
230.34960.2060.10390.7703-0.08820.07410.02250.031-0.0192-0.0085-0.0236-0.00660.01120.05530.00110.1267-0.00730.01940.1648-0.00410.141321.7707-2.674116.4944
240.2082-0.6618-0.0412.23860.35390.40850.05220.03960.0334-0.1291-0.0703-0.12140.00960.10540.01810.1552-0.00550.02670.1640.00210.130118.30321.59083.6033
Refinement TLS group
IDRefine-IDRefine TLS-IDSelectionAuth asym-IDAuth seq-ID
1X-RAY DIFFRACTION1ALLAAA2 - 13
2X-RAY DIFFRACTION2ALLAAA14 - 20
3X-RAY DIFFRACTION3ALLAAA21 - 76
4X-RAY DIFFRACTION4ALLAAA77 - 120
5X-RAY DIFFRACTION5ALLAAA121 - 137
6X-RAY DIFFRACTION6ALLAAA138 - 160
7X-RAY DIFFRACTION7ALLBBB179 - 199
8X-RAY DIFFRACTION8ALLBBB200 - 208
9X-RAY DIFFRACTION9ALLBBB209 - 259
10X-RAY DIFFRACTION10ALLBBB260 - 287
11X-RAY DIFFRACTION11ALLBBB288 - 309
12X-RAY DIFFRACTION12ALLBBB310 - 312
13X-RAY DIFFRACTION13ALLCCC3 - 14
14X-RAY DIFFRACTION14ALLCCC15 - 22
15X-RAY DIFFRACTION15ALLCCC23 - 34
16X-RAY DIFFRACTION16ALLCCC35 - 76
17X-RAY DIFFRACTION17ALLCCC77 - 124
18X-RAY DIFFRACTION18ALLCCC125 - 157
19X-RAY DIFFRACTION19ALLDDD179 - 199
20X-RAY DIFFRACTION20ALLDDD200 - 206
21X-RAY DIFFRACTION21ALLDDD207 - 248
22X-RAY DIFFRACTION22ALLDDD249 - 262
23X-RAY DIFFRACTION23ALLDDD263 - 292
24X-RAY DIFFRACTION24ALLDDD293 - 312

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