- PDB-2gsm: Catalytic Core (Subunits I and II) of Cytochrome c oxidase from R... -
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Open data
ID or keywords:
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Basic information
Entry
Database: PDB / ID: 2gsm
Title
Catalytic Core (Subunits I and II) of Cytochrome c oxidase from Rhodobacter sphaeroides
Components
(Cytochrome c oxidase subunit ...) x 2
Keywords
OXIDOREDUCTASE / transmembrane protein complex
Function / homology
Function and homology information
respiratory chain complex IV / cytochrome-c oxidase / oxidative phosphorylation / cytochrome-c oxidase activity / electron transport coupled proton transport / ATP synthesis coupled electron transport / respiratory electron transport chain / copper ion binding / heme binding / metal ion binding / plasma membrane Similarity search - Function
Cytochrome c oxidase, subunit I bacterial type / Helix Hairpins - #90 / Cytochrome C Oxidase; Chain A / Cytochrome c oxidase-like, subunit I domain / Cytochrome c oxidase, subunit II / Cytochrome c oxidase subunit I domain / Cytochrome C oxidase subunit II, transmembrane domain / Cytochrome C oxidase subunit II, transmembrane domain / Cytochrome oxidase subunit II transmembrane region profile. / Cytochrome c/quinol oxidase subunit II ...Cytochrome c oxidase, subunit I bacterial type / Helix Hairpins - #90 / Cytochrome C Oxidase; Chain A / Cytochrome c oxidase-like, subunit I domain / Cytochrome c oxidase, subunit II / Cytochrome c oxidase subunit I domain / Cytochrome C oxidase subunit II, transmembrane domain / Cytochrome C oxidase subunit II, transmembrane domain / Cytochrome oxidase subunit II transmembrane region profile. / Cytochrome c/quinol oxidase subunit II / Copper centre Cu(A) / CO II and nitrous oxide reductase dinuclear copper centers signature. / Cytochrome C oxidase subunit II, transmembrane domain superfamily / Cytochrome c oxidase, subunit I, copper-binding site / Heme-copper oxidase catalytic subunit, copper B binding region signature. / Cytochrome c oxidase-like, subunit I domain / Cytochrome oxidase subunit I profile. / Cytochrome C oxidase subunit II, periplasmic domain / Cytochrome c oxidase subunit I / Cytochrome c oxidase-like, subunit I superfamily / Cytochrome C and Quinol oxidase polypeptide I / Cytochrome c oxidase subunit II-like C-terminal / Cytochrome oxidase subunit II copper A binding domain profile. / Cupredoxins - blue copper proteins / Cupredoxin / Helix Hairpins / Up-down Bundle / Immunoglobulin-like / Sandwich / Orthogonal Bundle / Mainly Beta / Mainly Alpha Similarity search - Domain/homology
: / COPPER (II) ION / HEME-A / HYDROXIDE ION / TRIDECANE / Cytochrome c oxidase subunit 1 / Cytochrome c oxidase subunit 2 Similarity search - Component
Resolution: 2→2.051 Å / Redundancy: 4.4 % / Rmerge(I) obs: 0.399 / Mean I/σ(I) obs: 3.8 / Num. unique all: 13648 / % possible all: 97.4
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Processing
Software
Name
Version
Classification
REFMAC
5.1.24
refinement
MAR345
datacollection
XDS
datascaling
PHASER
phasing
Refinement
Method to determine structure: MOLECULAR REPLACEMENT / Resolution: 2→20 Å / Cor.coef. Fo:Fc: 0.945 / Cor.coef. Fo:Fc free: 0.933 / SU B: 3.77 / SU ML: 0.1 / Cross valid method: THROUGHOUT / σ(F): 0 / σ(I): 0 / ESU R: 0.141 / ESU R Free: 0.129 / Stereochemistry target values: MAXIMUM LIKELIHOOD Details: (1) THERE IS A COVALENT LINKAGE BETWEEN NE2 OF HIS284 OF SUBUNIT I AND CE2 OF TYR288 OF SUBUNIT I. (2) THERE IS RESIDUAL DENSITY IN (FO-FC) DIFFERENCE FOURIER MAP AT THE MAGNESIUM SITES IN ...Details: (1) THERE IS A COVALENT LINKAGE BETWEEN NE2 OF HIS284 OF SUBUNIT I AND CE2 OF TYR288 OF SUBUNIT I. (2) THERE IS RESIDUAL DENSITY IN (FO-FC) DIFFERENCE FOURIER MAP AT THE MAGNESIUM SITES IN BOTH MOLECULES AND THE B-FACTOR FOR EACH MAGNESIUM ION IS UNUSUALLY LOW. THESE OBSERVATIONS SUGGEST THAT THIS MAGNESIUM SITE MAY BE PARTIALLY OCCUPIED BY A HEAVIER METAL ION IN THE PROTEIN CRYSTAL. (3) THE SIDE CHAINS OF THE FOLLOWING RESIDUES ARE NOT RESOLVED BEYOND CB ATOMS. THESE UNRESOLVED SIDE CHAIN ATOMS ARE ASSIGNED AN OCCUPANCY OF 0.00 AND AN ARBITORY B-FACTOR OF 100.00: PHE A 17 THR A 18 ARG A 19 LYS A 74 LYS A 224 GLU A 548 ARG B 131 HIS B 284 PHE C 17 THR C 18 ARG C 19 LYS C 74 ARG C 137 LYS C 224 ARG C 521 ARG C 524 LYS D 86 ARG D 131 HIS D 284. (4) THE DISTAL GLUCOSE RING OF THE FOLLOWING DELCYL MALTOSIDE MOLECULES ARE NOT RESOLVED. THESE UNRESOLVED ATOMS ARE ASSIGNED AN OCCUPANCY OF 0.00 AND AN ARBITORY B-FACTOR OF 100.00: DMU 5004 DMU 6004. (5) Ligands labelled as TRD are all alkyl chains (with different lengths) of either DMU or native membrane lipids such as phosphatidyl ethanolamine or cardiolipin. Some of the sugars labelled as DMU do not contain the carbon chain. The authors do not know for sure the identities of the complete molecules yet.
Rfactor
Num. reflection
% reflection
Selection details
Rfree
0.23242
3780
2 %
RANDOM
Rwork
0.21355
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-
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all
0.21393
192300
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obs
0.21393
184839
96.12 %
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Solvent computation
Ion probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.4 Å / Solvent model: BABINET MODEL WITH MASK
Displacement parameters
Biso mean: 36.504 Å2
Baniso -1
Baniso -2
Baniso -3
1-
-2.4 Å2
0 Å2
0 Å2
2-
-
0.18 Å2
0 Å2
3-
-
-
2.22 Å2
Refinement step
Cycle: LAST / Resolution: 2→20 Å
Protein
Nucleic acid
Ligand
Solvent
Total
Num. atoms
12463
0
678
503
13644
Refine LS restraints
Refine-ID
Type
Dev ideal
Dev ideal target
Number
X-RAY DIFFRACTION
r_bond_refined_d
0.013
0.022
13598
X-RAY DIFFRACTION
r_angle_refined_deg
1.253
1.976
18540
X-RAY DIFFRACTION
r_dihedral_angle_1_deg
5.691
5
1577
X-RAY DIFFRACTION
r_chiral_restr
0.095
0.2
2029
X-RAY DIFFRACTION
r_gen_planes_refined
0.005
0.02
10205
X-RAY DIFFRACTION
r_nbd_refined
0.208
0.2
7026
X-RAY DIFFRACTION
r_xyhbond_nbd_refined
0.137
0.2
616
X-RAY DIFFRACTION
r_metal_ion_refined
0.158
0.2
23
X-RAY DIFFRACTION
r_symmetry_vdw_refined
0.229
0.2
38
X-RAY DIFFRACTION
r_symmetry_hbond_refined
0.063
0.2
5
X-RAY DIFFRACTION
r_mcbond_it
0.499
1.5
7847
X-RAY DIFFRACTION
r_mcangle_it
0.941
2
12676
X-RAY DIFFRACTION
r_scbond_it
1.503
3
5751
X-RAY DIFFRACTION
r_scangle_it
2.332
4.5
5862
LS refinement shell
Resolution: 2→2.051 Å / Total num. of bins used: 20
Rfactor
Num. reflection
% reflection
Rfree
0.328
270
-
Rwork
0.335
13668
-
obs
-
13648
97.4 %
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