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- PDB-3ssq: CcmK2 - form 1 dodecamer -

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Basic information

Entry
Database: PDB / ID: 3ssq
TitleCcmK2 - form 1 dodecamer
ComponentsCarbon dioxide concentrating mechanism protein
KeywordsSTRUCTURAL PROTEIN / Bacterial microcompartment fold / shell forming / pore forming
Function / homology
Function and homology information


structural constituent of carboxysome shell / carboxysome / carbon fixation / photosynthesis / identical protein binding
Similarity search - Function
Carboxysome shell protein CcmK / BMC (bacterial microcompartment) domain / CcmK/CsoS1, bacterial microcompartment domain / Bacterial microcompartments protein, conserved site / Bacterial microcompartment (BMC) domain signature. / Bacterial microcompartment (BMC) domain profile. / BMC domain / Bacterial microcompartment domain / CcmK-like superfamily / BMC ...Carboxysome shell protein CcmK / BMC (bacterial microcompartment) domain / CcmK/CsoS1, bacterial microcompartment domain / Bacterial microcompartments protein, conserved site / Bacterial microcompartment (BMC) domain signature. / Bacterial microcompartment (BMC) domain profile. / BMC domain / Bacterial microcompartment domain / CcmK-like superfamily / BMC / Alpha-Beta Plaits / 2-Layer Sandwich / Alpha Beta
Similarity search - Domain/homology
Carboxysome shell protein CcmK2
Similarity search - Component
Biological speciesThermosynechococcus elongatus (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.2 Å
AuthorsSamborska, B. / Kimber, M.S.
CitationJournal: Structure / Year: 2012
Title: A CcmK2 double layer is the dominant architectural feature of the beta-carboxysomal shell facet
Authors: Samborska, B. / Kimber, M.S.
History
DepositionJul 8, 2011Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jul 11, 2012Provider: repository / Type: Initial release
Revision 1.1Nov 8, 2017Group: Refinement description / Category: software / Item: _software.name
Revision 1.2Sep 13, 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_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: Carbon dioxide concentrating mechanism protein
B: Carbon dioxide concentrating mechanism protein
C: Carbon dioxide concentrating mechanism protein
D: Carbon dioxide concentrating mechanism protein
E: Carbon dioxide concentrating mechanism protein
F: Carbon dioxide concentrating mechanism protein
hetero molecules


Theoretical massNumber of molelcules
Total (without water)78,77911
Polymers78,5456
Non-polymers2345
Water4,161231
1
A: Carbon dioxide concentrating mechanism protein
B: Carbon dioxide concentrating mechanism protein
C: Carbon dioxide concentrating mechanism protein
D: Carbon dioxide concentrating mechanism protein
E: Carbon dioxide concentrating mechanism protein
F: Carbon dioxide concentrating mechanism protein
hetero molecules

A: Carbon dioxide concentrating mechanism protein
B: Carbon dioxide concentrating mechanism protein
C: Carbon dioxide concentrating mechanism protein
D: Carbon dioxide concentrating mechanism protein
E: Carbon dioxide concentrating mechanism protein
F: Carbon dioxide concentrating mechanism protein
hetero molecules


Theoretical massNumber of molelcules
Total (without water)157,55822
Polymers157,09112
Non-polymers46810
Water21612
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation8_555-y,-x,-z+1/21
Unit cell
Length a, b, c (Å)83.362, 83.362, 226.860
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number92
Space group name H-MP41212

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Components

#1: Protein
Carbon dioxide concentrating mechanism protein


Mass: 13090.877 Da / Num. of mol.: 6
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Thermosynechococcus elongatus (bacteria)
Strain: BP-1 / Gene: ccmK2, tll0947 / Plasmid: pET-28a / Production host: Escherichia coli (E. coli) / Strain (production host): Rosetta / References: UniProt: Q8DKB2
#2: Chemical ChemComp-GOL / GLYCEROL / GLYCERIN / PROPANE-1,2,3-TRIOL / Glycerol


Mass: 92.094 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C3H8O3
#3: Chemical
ChemComp-CL / CHLORIDE ION / Chloride


Mass: 35.453 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Cl
#4: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 231 / 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

CrystalDensity Matthews: 2.51 Å3/Da / Density % sol: 50.97 %
Crystal growTemperature: 293 K / Method: vapor diffusion, sitting drop / pH: 4.6
Details: 30 % PEG 2000 MME, 0.21 M (NH4)2SO4, 0.1 M Na acetate , pH 4.6, VAPOR DIFFUSION, SITTING DROP, temperature 293K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: CLSI / Beamline: 08ID-1 / Wavelength: 0.97934 Å
DetectorType: MARMOSAIC 225 mm CCD / Detector: CCD / Date: Jan 23, 2008
Details: White beam slits, cryo-cooled first and sagittally bent second crystal of double crystal monochromator (DCM), vertically focusing mirror (VFM)
RadiationMonochromator: Si(111) / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.97934 Å / Relative weight: 1
ReflectionResolution: 2.2→40 Å / Num. all: 41410 / Num. obs: 41410 / % possible obs: 99.5 % / Observed criterion σ(F): -3 / Observed criterion σ(I): -3 / Redundancy: 7.1 % / Rsym value: 0.05 / Net I/σ(I): 14.2
Reflection shellResolution: 2.2→2.28 Å / Mean I/σ(I) obs: 2.5 / Num. unique all: 4005 / Rsym value: 0.525 / % possible all: 98.4

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Processing

Software
NameVersionClassification
MxDCdata collection
MOLREPphasing
REFMAC5.2.0019refinement
HKL-2000data reduction
HKL-2000data scaling
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: pdb entry 2A1B
Resolution: 2.2→40 Å / Cor.coef. Fo:Fc: 0.97 / Cor.coef. Fo:Fc free: 0.956 / SU B: 15.915 / SU ML: 0.187 / Cross valid method: THROUGHOUT / ESU R Free: 0.186 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
RfactorNum. reflection% reflectionSelection details
Rfree0.2366 2064 5 %RANDOM
Rwork0.18663 ---
all0.18907 41410 --
obs0.18907 39066 98.83 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK
Displacement parametersBiso mean: 59.565 Å2
Baniso -1Baniso -2Baniso -3
1-1.75 Å20 Å20 Å2
2--1.75 Å20 Å2
3----3.5 Å2
Refinement stepCycle: LAST / Resolution: 2.2→40 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms4510 0 10 231 4751
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0140.0224581
X-RAY DIFFRACTIONr_bond_other_d0.0010.023072
X-RAY DIFFRACTIONr_angle_refined_deg1.4011.9616213
X-RAY DIFFRACTIONr_angle_other_deg0.97437462
X-RAY DIFFRACTIONr_dihedral_angle_1_deg6.0825596
X-RAY DIFFRACTIONr_dihedral_angle_2_deg29.89522.581186
X-RAY DIFFRACTIONr_dihedral_angle_3_deg16.01515756
X-RAY DIFFRACTIONr_dihedral_angle_4_deg19.6331548
X-RAY DIFFRACTIONr_chiral_restr0.0770.2746
X-RAY DIFFRACTIONr_gen_planes_refined0.0040.025140
X-RAY DIFFRACTIONr_gen_planes_other0.0010.02924
X-RAY DIFFRACTIONr_nbd_refined0.1810.2810
X-RAY DIFFRACTIONr_nbd_other0.1950.23257
X-RAY DIFFRACTIONr_nbtor_refined0.1610.22200
X-RAY DIFFRACTIONr_nbtor_other0.0860.22523
X-RAY DIFFRACTIONr_xyhbond_nbd_refined0.1820.2153
X-RAY DIFFRACTIONr_xyhbond_nbd_other
X-RAY DIFFRACTIONr_metal_ion_refined
X-RAY DIFFRACTIONr_metal_ion_other
X-RAY DIFFRACTIONr_symmetry_vdw_refined0.320.218
X-RAY DIFFRACTIONr_symmetry_vdw_other0.2320.236
X-RAY DIFFRACTIONr_symmetry_hbond_refined0.1310.25
X-RAY DIFFRACTIONr_symmetry_hbond_other
X-RAY DIFFRACTIONr_symmetry_metal_ion_refined
X-RAY DIFFRACTIONr_symmetry_metal_ion_other
X-RAY DIFFRACTIONr_mcbond_it0.6541.53862
X-RAY DIFFRACTIONr_mcbond_other0.111.51240
X-RAY DIFFRACTIONr_mcangle_it0.77624812
X-RAY DIFFRACTIONr_scbond_it1.42331758
X-RAY DIFFRACTIONr_scangle_it2.0364.51401
X-RAY DIFFRACTIONr_rigid_bond_restr
X-RAY DIFFRACTIONr_sphericity_free
X-RAY DIFFRACTIONr_sphericity_bonded
LS refinement shellResolution: 2.2→2.257 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.477 140 -
Rwork0.442 2686 -
obs--93.7 %
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)
17.4712-3.4333-0.45915.719-2.10641.41880.010.02470.5063-0.00520.0195-0.2955-0.6388-0.1189-0.0295-0.016-0.18230.1607-0.3196-0.0298-0.235225.319513.208852.1076
26.0933-1.03620.6662.4658-1.31650.70520.0132-0.14730.13750.01980.0437-0.2473-0.45030.0105-0.0569-0.0078-0.15660.184-0.2185-0.0291-0.217924.496411.594754.4534
35.9084-1.6730.53381.1869-0.19814.58850.0065-0.34650.92470.2711-0.0441-0.1522-0.7858-0.08610.03760.1077-0.13570.1746-0.2836-0.0635-0.081923.473219.679855.9457
417.4039-5.7683-6.62663.80395.54068.4343-0.02340.06721.27690.0180.4389-0.4726-0.21120.3142-0.41540.131-0.15650.2564-0.37520.0938-0.12227.034517.760648.3879
59.4294-1.81785.87371.237-2.1035.0817-0.0771-1.7870.01430.03180.4739-0.1198-0.4395-0.8205-0.39680.1769-0.05470.22040.04750.0316-0.118313.367212.25461.352
62.0073-0.8691-1.74525.06131.49584.35260.04410.05090.1315-0.19210.2222-0.7414-0.40460.3643-0.2663-0.2344-0.19140.1844-0.2469-0.1027-0.181637.1944-3.383449.1943
74.629-0.8249-0.59014.5466-1.14370.54930.1027-0.1626-0.0999-0.06810.0424-0.4581-0.23440.2393-0.1451-0.2224-0.12230.1802-0.2226-0.1252-0.21136.1099-4.60152.0769
84.0481-1.2674-2.21293.9138-1.01922.04310.0258-0.75160.21610.14550.1846-0.8973-0.85150.5283-0.2104-0.2006-0.25960.1527-0.1427-0.1675-0.045142.1216-0.196655.6119
93.8080.5883-0.83277.524.23726.9949-0.3525-0.13860.1644-0.80160.4561-1.0148-0.99490.7644-0.1036-0.2379-0.24380.2977-0.258-0.0236-0.086841.26920.743547.1882
101.2967-1.0323-0.046.5904-1.6190.8279-0.3839-0.6421-0.01330.97420.3428-0.4458-0.21610.35720.04110.0282-0.11040.1195-0.07-0.0254-0.230131.21-1.23263.8253
114.68471.90821.75653.9160.79453.849-0.03770.2304-0.1828-0.59050.3344-0.4233-0.0860.4276-0.2968-0.0659-0.12330.2258-0.2487-0.1153-0.210430.7751-18.119437.9007
123.88921.42110.46541.55582.36124.6872-0.18310.1006-0.2755-0.28540.4172-0.1608-0.01280.2114-0.2341-0.0273-0.11640.161-0.2934-0.064-0.270429.762-19.816440.4975
134.03130.9932-1.38493.2092.4733.1473-0.02610.0942-0.5328-0.31850.5086-0.9690.08480.6265-0.4826-0.0833-0.06740.164-0.1785-0.2056-0.023237.4684-22.698741.1586
141.8594-0.04121.05392.46551.17988.38560.0390.5384-0.1441-0.53180.3252-0.4666-0.23211.1179-0.36420.0016-0.15820.328-0.1977-0.1498-0.036335.9004-17.383434.8219
153.55725.98662.567412.92482.48123.04050.4035-0.4186-0.34940.6343-0.0936-0.68960.75920.0096-0.3099-0.0316-0.05420.0997-0.1561-0.0132-0.159231.7709-21.289953.5539
163.6554-1.99040.37386.46420.2873.4060.06590.10.1214-0.56870.03310.00530.0351-0.1931-0.0990.1829-0.12520.1155-0.2569-0.0349-0.266313.1681-17.089229.2302
173.0751-2.6704-0.57552.7533-0.38831.92320.0042-0.168-0.1248-0.35740.19150.07810.1715-0.3801-0.19570.152-0.1330.0471-0.2060.0394-0.263611.7356-18.861131.667
182.6887-2.426-1.32197.407-1.41432.36360.1430.1865-0.2515-0.72450.04760.06510.4242-0.125-0.19060.2195-0.12130.0452-0.2182-0.0369-0.194614.1301-25.564927.321
195.1255-5.70481.621812.4347-1.42440.89670.33040.5403-0.0933-1.0462-0.1963-0.0175-0.0494-0.0094-0.13410.2842-0.09750.2268-0.1537-0.0146-0.257316.3173-17.965823.985
209.5760.97484.05733.08950.33421.72110.142-0.7917-0.8289-0.13130.24260.19390.405-0.5207-0.38460.1893-0.13380.1206-0.06310.1049-0.145714.5181-27.971640.8085
213.37530.027-0.35328.22571.96732.6734-0.06750.1650.2152-0.46070.13390.521-0.0313-0.4039-0.06640.1541-0.0382-0.0142-0.19340.109-0.25451.1484-1.957431.5121
222.287-1.89110.13294.40090.37712.96770.1006-0.02760.1935-0.45310.17610.4259-0.0591-0.5908-0.27670.0903-0.02780.0698-0.19980.1251-0.17420.1192-2.642134.074
232.7012-2.64390.74313.59941.20093.8799-0.08620.3816-0.3084-0.76140.05830.8338-0.0424-0.75520.02790.2088-0.0582-0.0624-0.0060.1381-0.0572-4.5733-5.867928.0708
243.91211.3974-0.093212.87751.8690.721-0.10340.45430.2508-1.26330.15250.5613-0.1707-0.28-0.04910.3084-0.0473-0.0029-0.08230.1274-0.28391.9873-0.901825.606
258.997-7.6607-3.70978.613.27771.5364-0.4759-0.1819-0.61270.20390.44751.36320.211-0.44170.02840.1447-0.1050.11490.02480.1736-0.0484-3.5061-14.651938.5301
263.96890.3814-0.22694.060.49865.26690.0474-0.22450.0431-0.13250.09360.2623-0.5139-0.0571-0.1410.0413-0.01480.1448-0.37720.0779-0.20948.244113.625142.7905
272.6416-0.538-1.25844.80361.22295.05460.2398-0.05160.2390.3963-0.29270.1472-0.3315-0.46260.0530.0427-0.08660.1198-0.32580.0548-0.21686.545812.536845.3982
281.57180.58621.2644.89141.45874.8636-0.1175-0.38660.269-0.2668-0.01830.8414-0.7074-0.68210.13570.13350.07790.094-0.25370.0626-0.09070.063916.698442.3738
296.5852.5724-1.32925.8536-1.64514.56050.3930.6170.5742-0.3298-0.14470.3022-0.3871-0.109-0.24840.22850.07090.1847-0.46040.1022-0.25097.280616.980537.5914
300.97171.77851.02256.79816.88288.16410.239-0.44110.55290.4976-0.55080.8672-0.0208-0.79840.31180.1073-0.04330.1975-0.01410.11950.0019-4.02265.351948.7732
Refinement TLS group
IDRefine-IDRefine TLS-IDAuth asym-IDAuth seq-ID
1X-RAY DIFFRACTION1A1 - 21
2X-RAY DIFFRACTION2A22 - 41
3X-RAY DIFFRACTION3A42 - 61
4X-RAY DIFFRACTION4A62 - 81
5X-RAY DIFFRACTION5A82 - 101
6X-RAY DIFFRACTION6B2 - 21
7X-RAY DIFFRACTION7B22 - 41
8X-RAY DIFFRACTION8B42 - 61
9X-RAY DIFFRACTION9B62 - 81
10X-RAY DIFFRACTION10B82 - 101
11X-RAY DIFFRACTION11C2 - 21
12X-RAY DIFFRACTION12C22 - 41
13X-RAY DIFFRACTION13C42 - 61
14X-RAY DIFFRACTION14C62 - 81
15X-RAY DIFFRACTION15C82 - 101
16X-RAY DIFFRACTION16D2 - 21
17X-RAY DIFFRACTION17D22 - 41
18X-RAY DIFFRACTION18D42 - 61
19X-RAY DIFFRACTION19D62 - 81
20X-RAY DIFFRACTION20D82 - 101
21X-RAY DIFFRACTION21E1 - 21
22X-RAY DIFFRACTION22E22 - 41
23X-RAY DIFFRACTION23E42 - 61
24X-RAY DIFFRACTION24E62 - 81
25X-RAY DIFFRACTION25E82 - 101
26X-RAY DIFFRACTION26F2 - 21
27X-RAY DIFFRACTION27F22 - 41
28X-RAY DIFFRACTION28F42 - 61
29X-RAY DIFFRACTION29F62 - 81
30X-RAY DIFFRACTION30F82 - 101

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