- PDB-2iab: Crystal structure of a protein with FMN-binding split barrel fold... -
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Open data
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Basic information
Entry
Database: PDB / ID: 2iab
Title
Crystal structure of a protein with FMN-binding split barrel fold (NP_828636.1) from Streptomyces avermitilis at 2.00 A resolution
Components
Hypothetical protein
Keywords
UNKNOWN FUNCTION / NP_828636.1 / hypothetical protein / Structural Genomics / Joint Center for Structural Genomics / JCSG / Protein Structure Initiative / PSI
Function / homology
Pyridoxamine 5'-phosphate oxidase, putative / Pyridoxamine 5'-phosphate oxidase / Electron Transport, Fmn-binding Protein; Chain A / Pnp Oxidase; Chain A / FMN-binding split barrel / Roll / Mainly Beta / ISOPROPYL ALCOHOL / Pyridoxamine 5'-phosphate oxidase N-terminal domain-containing protein
Function and homology information
Biological species
Streptomyces avermitilis (bacteria)
Method
X-RAY DIFFRACTION / SYNCHROTRON / MAD / Resolution: 2 Å
BIOMOLECULE: 1 THIS ENTRY CONTAINS THE CRYSTALLOGRAPHIC ASYMMETRIC UNIT WHICH CONSISTS OF 2 CHAIN(S) ...BIOMOLECULE: 1 THIS ENTRY CONTAINS THE CRYSTALLOGRAPHIC ASYMMETRIC UNIT WHICH CONSISTS OF 2 CHAIN(S). SEE REMARK 350 FOR INFORMATION ON GENERATING THE BIOLOGICAL MOLECULE(S). SIZE EXCLUSION CHROMATOGRAPHY SUPPORTS THE ASSIGNMENT OF A DIMER AS A BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE.
Remark 999
SEQUENCE THE CONSTRUCT WAS EXPRESSED WITH A PURIFICATION TAG MGSDKIHHHHHHENLYFQG. THE TAG WAS ... SEQUENCE THE CONSTRUCT WAS EXPRESSED WITH A PURIFICATION TAG MGSDKIHHHHHHENLYFQG. THE TAG WAS REMOVED WITH TEV PROTEASE LEAVING ONLY A GLYCINE (0) FOLLOWED BY THE TARGET SEQUENCE.
Resolution: 2→34.001 Å / Num. obs: 24072 / % possible obs: 100 % / Redundancy: 14 % / Biso Wilson estimate: 31.69 Å2 / Rmerge(I) obs: 0.077 / Χ2: 0.942 / Net I/σ(I): 14.9
Reflection shell
Resolution (Å)
Redundancy (%)
Rmerge(I) obs
Num. unique all
Χ2
Diffraction-ID
% possible all
2-2.05
12.3
0.688
1672
0.941
1
100
2.05-2.11
13.7
0.554
1676
1.023
1
100
2.11-2.17
14.3
0.475
1681
1.056
1
100
2.17-2.24
14.4
0.367
1698
1.075
1
100
2.24-2.32
14.4
0.298
1677
1.146
1
100
2.32-2.41
14.5
0.255
1694
1.002
1
100
2.41-2.52
14.4
0.214
1694
0.967
1
100
2.52-2.65
14.4
0.168
1708
1.038
1
100
2.65-2.82
14.4
0.119
1709
1.019
1
100
2.82-3.04
14.3
0.088
1726
0.984
1
100
3.04-3.34
14.3
0.07
1724
0.82
1
100
3.34-3.83
14.1
0.053
1757
0.725
1
100
3.83-4.82
13.9
0.042
1782
0.77
1
100
4.82-50
12.8
0.04
1932
0.636
1
99.5
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Phasing
Phasing
Method: MAD
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Processing
Software
Name
Version
Classification
NB
MolProbity
3beta29
modelbuilding
SOLVE
phasing
REFMAC
5.2.0005
refinement
SCALEPACK
datascaling
PDB_EXTRACT
2
dataextraction
DENZO
datareduction
Refinement
Method to determine structure: MAD / Resolution: 2→34.001 Å / Cor.coef. Fo:Fc: 0.961 / Cor.coef. Fo:Fc free: 0.932 / SU B: 6.288 / SU ML: 0.094 / TLS residual ADP flag: LIKELY RESIDUAL / Cross valid method: THROUGHOUT / σ(F): 0 / ESU R: 0.163 / ESU R Free: 0.157 Stereochemistry target values: MAXIMUM LIKELIHOOD WITH PHASES Details: 1.HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS 2.ATOM RECORD CONTAINS RESIDUAL B FACTORS ONLY 3.FOUR ISOPROPANOL MOLECULES FROM CRYSTALLIZATION ARE BUILT IN THE MODEL. 4.A MET- ...Details: 1.HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS 2.ATOM RECORD CONTAINS RESIDUAL B FACTORS ONLY 3.FOUR ISOPROPANOL MOLECULES FROM CRYSTALLIZATION ARE BUILT IN THE MODEL. 4.A MET-INHIBITION PROTOCOL WAS USED FOR SELENOMETHIONINE INCORPORATION DURING PROTEIN EXPRESSION. THE OCCUPANCY OF THE SE ATOMS IN THE MSE RESIDUES WAS REDUCED TO 0.75 TO ACCOUNT FOR THE REDUCED SCATTERING POWER DUE TO PARTIAL S-MET INCORPORATION. 5.AN ANOMALOUS DIFFERENCE DENSITY PEAK IS LOCATED BETWEEN THE SIDECHAINS OF TRP A133 AND ASP B25. THE POSITION OF THIS ANOMALOUS DIFFERENCE PEAK CORRESPONDS TO THE LOCATION OF THE SE ATOM OF MSE B1 IF THE NCS TRANSFORMATION RELATING SUBUNIT B TO SUBUNIT A IS APPLIED. HOWEVER, DISORDER AT THE N-TERMINUS OF THE A SUBUNIT PREVENTED MODELING OF RESIDUES A0 and A1. 6.WATER MOLECULES WERE MODELED INTO UNEXPLAINED DENSITY NEAR THR A79.
Rfactor
Num. reflection
% reflection
Selection details
Rfree
0.23
1196
5 %
RANDOM
Rwork
0.178
-
-
-
all
0.18
-
-
-
obs
0.18
24057
99.87 %
-
Solvent computation
Ion probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK
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