Literature DB >> 26279856

Crystal structure of methyl (S)-2-{(R)-4-[(tert-but-oxy-carbon-yl)amino]-3-oxo-1,2-thia-zolidin-2-yl}-3-methyl-butano-ate: a chemical model for oxidized protein tyrosine phosphatase 1B (PTP1B).

Kasi Viswanatharaju Ruddraraju1, Roman Hillebrand1, Charles L Barnes1, Kent S Gates1.   

Abstract

The asymmetric unit of the title compound, C14H24N2O5S, contains two independent mol-ecules (A and B). In each mol-ecule, the iso-thia-zolidin-3-one ring adopts an envelope conformation with the methyl-ene C atom as the flap. In the crystal, the A mol-ecules are linked to one another by N-H⋯O hydrogen bonds, forming columns along [010]. The B mol-ecules are also linked to one another by N-H⋯O hydrogen bonds, forming columns along the same direction, i.e. [010]. Within the individual columns, there are also C-H⋯S and C-H⋯O hydrogen bonds present. The columns of A and B mol-ecules are linked by C-H⋯O hydrogen bonds, forming sheets parallel to (10-1). The absolute structure was determined by resonant scattering [Flack parameter = 0.00 (3)].

Entities:  

Keywords:  crystal structure; hydrogen bonding; iso­thia­zolidine-3-one derivative; oxidized PTP1B; sulfenyl amide

Year:  2015        PMID: 26279856      PMCID: PMC4518936          DOI: 10.1107/S2056989015010051

Source DB:  PubMed          Journal:  Acta Crystallogr E Crystallogr Commun


Chemical context

X-ray crystallographic analyses of the enzyme PTP1B have revealed an unprecedented post-translational modification that may be important in redox regulation of protein function (Zhou et al., 2011 ▸; Salmeen et al., 2003 ▸; van Montfort et al., 2003 ▸; Tanner et al., 2011 ▸; Sivaramakrishnan et al., 2010 ▸). Specifically, oxidation converts the catalytic cysteine in this enzyme to an iso­thia­zolidin-3-one heterocycle that is commonly referred to as a sulfenyl amide residue. As part of early efforts in the area of cephalosporin synthesis, a dipeptide containing a protein sulfenyl amide residue was synthesized (Morin et al., 1973 ▸). However, to the best of our knowledge, there are no examples of low mol­ecular weight sulfenyl amides that have been characterized crystallographically, although structures of related 1,2-benziso­thia­zol-3(2H)-ones have been reported (Kim et al., 1996 ▸; Ranganathan et al., 2002 ▸; Wang et al., 2011 ▸). Herein we describe the synthesis and crystal structure of the title compound, a low mol­ecular weight mimic of oxidized PTP1B.

Structural commentary

The mol­ecular structures of the two independent mol­ecules (A and B) of the title compound are shown in Fig. 1 ▸. The two mol­ecules differ only in the orientation of the isopropyl group (Fig. 1 ▸). The bond lengths and angles are very similar to those seen in the crystal structures of the oxidized enzyme PTP1B (see: pdb codes 1oem, 1oes, 3sme). In both mol­ecules, the iso­thio­zolidin-3-one ring adopts an envelope conformation with the methyl­ene C atom (C1A in mol­ecule A and C1B in mol­ecule B) as the flap, similar to the conformation of oxidized PTP1B (pdb code: 1oem). In previously reported chemical models (1,2-benziso­thia­zole compounds) of PTP1B, the five-membered ring is planar (Kim et al., 1996 ▸; Ranganathan et al., 2002 ▸; Wang et al., 2011 ▸; Sivaramakrishnan et al., 2005 ▸). The S—N bond lengths in the title compound [S1A—N1A = 1.740 (2) Å and S1B—N1B = 1.733 (2) Å], are similar to the same bond distance of ca 1.71 Å in oxidized PTP1B (pdb code: 1oem).
Figure 1

A view of the mol­ecular structure of the two independent mol­ecules (A and B) of the title compound. Displacement ellipsoids are drawn at the 50% probability level.

Supra­molecular features

In the crystal, N—H⋯O hydrogen-bonding inter­actions give infinite, separate columns of A and B mol­ecules along the b-axis (Table 1 ▸ and Fig. 2 ▸). Within the columns there are C—H⋯S and C—H⋯O hydrogen bonds present (Table 1 ▸). The columns of A and B mol­ecules are linked by C—H⋯O hydrogen bonds, forming sheets parallel to (10); see Fig. 2 ▸.
Table 1

Hydrogen-bond geometry (, )

DHA DHHA D A DHA
N2AH2ANO1A i 0.882.072.925(3)164
N2BH2BNO1B ii 0.882.052.921(3)169
C2AH2AO5A i 1.002.573.549(3)167
C1BH1B2O1B iii 0.992.563.371(4)139
C4AH4AS1A iv 1.002.703.526(3)140
C4BH4BS1B iv 1.002.703.488(3)136
C9BH9B3O2A v 0.982.523.400(4)149

Symmetry codes: (i) ; (ii) ; (iii) ; (iv) ; (v) .

Figure 2

A view along the b axis of the crystal packing of the title compound. Hydrogen bonds are shown as dashed lines (see Table 1 ▸ for details; A mol­ecules are blue and B mol­ecules are red).

Database survey

A search in the Cambridge Structural Database (Version 5.36; Groom & Allen, 2014 ▸) for the substructure 1,2-benziso­thia­zole-3-one resulted in over twenty hits, which include three structures similar to the title compound: methyl 2-hy­droxy-2-(3-oxobenzo[d]iso­thia­zol-2(3H)-yl)propano­ate (Ranganathan et al., 2002 ▸), 2-(3-oxobenzo[d]iso­thia­zol-2(3H)-yl)acetic acid (Wang et al., 2011 ▸) and 2-phenethyl­benzo[d]iso­thia­zol-3(2H)-one (Kim et al., 1996 ▸). In all three compounds, the five-membered isothizolinone ring is planar. However, the S—N bond lengths are similar to that in the title compound; see Structural commentary.

Synthesis and crystallization

The title compound was prepared by a modification of a previously published procedure (Shiau et al., 2006 ▸). Pyridine (20 eq) was added to a solution of l-valine ester of N,N-di-tert-butyl­oxycarbonyl-l-cystine (1.0 g, 1.5 mmol) in 50 mL of anhydrous CH2Cl2. The solution was cooled in a liquid nitro­gen bath, under an N2 atmosphere, and stirred for 15 min. Bromine (135 µL, 2.6 mmol) in dry CH2Cl2 was added dropwise over a period of 30 min. The solution was allowed to warm to 273 K over 1 h, and then CH2Cl2 was evaporated in vacuo using a rotatory evaporator to afford the crude material. Flash chromatography (50% EtOAc/hexa­nes) of the crude material gave the title compound as a white solid (360 mg, 72% yield). Crystals suitable for X-ray diffraction analysis were obtained by slow evaporation of a solution of title compound in DMF.

Refinement

Crystal data, data collection and structure refinement details are summarized in Table 2 ▸. The H atoms were included in calculated positions and treated as riding atoms: N—H = 0.88 Å, C—H = 0.98–1.00 Å with U iso(H) = 1.5U eq(C) for methyl H atoms and 1.2U eq(N,C) for other H atoms.
Table 2

Experimental details

Crystal data
Chemical formulaC14H24N2O5S
M r 332.41
Crystal system, space groupMonoclinic, P21
Temperature (K)173
a, b, c ()11.509(3), 5.9290(18), 25.751(8)
()98.307(3)
V (3)1738.7(9)
Z 4
Radiation typeMo K
(mm1)0.21
Crystal size (mm)0.50 0.15 0.05
 
Data collection
DiffractometerBruker APEXII CCD area detector
Absorption correctionMulti-scan (SADABS; Bruker, 2008)
T min, T max 0.88, 0.99
No. of measured, independent and observed [I > 2(I)] reflections19532, 7699, 6307
R int 0.026
(sin /)max (1)0.650
 
Refinement
R[F 2 > 2(F 2)], wR(F 2), S 0.040, 0.086, 1.05
No. of reflections7699
No. of parameters409
No. of restraints1
H-atom treatmentH-atom parameters constrained
max, min (e 3)0.22, 0.25
Absolute structureFlack x determined using 2415 quotients [(I +)(I )]/[(I +)+(I )] (Parsons et al., 2013)
Absolute structure parameter0.00(3)

Computer programs: APEX2 and SAINT (Bruker, 2008 ▸), SHELXS2014 (Sheldrick, 2008 ▸), SHELXL2014 (Sheldrick, 2015 ▸), Mercury (Macrae et al., 2008 ▸) and publCIF (Westrip, 2010 ▸).

Crystal structure: contains datablock(s) I. DOI: 10.1107/S2056989015010051/su5136sup1.cif Structure factors: contains datablock(s) I. DOI: 10.1107/S2056989015010051/su5136Isup2.hkl Click here for additional data file. Supporting information file. DOI: 10.1107/S2056989015010051/su5136Isup3.cml CCDC reference: 1402668 Additional supporting information: crystallographic information; 3D view; checkCIF report
C14H24N2O5SF(000) = 712
Mr = 332.41Dx = 1.270 Mg m3
Monoclinic, P21Mo Kα radiation, λ = 0.71073 Å
Hall symbol: P 2ybCell parameters from 7090 reflections
a = 11.509 (3) Åθ = 2.6–22.2°
b = 5.9290 (18) ŵ = 0.21 mm1
c = 25.751 (8) ÅT = 173 K
β = 98.307 (3)°Needle, colourless
V = 1738.7 (9) Å30.50 × 0.15 × 0.05 mm
Z = 4
Bruker APEXII CCD area-detector diffractometer7699 independent reflections
Radiation source: fine-focus sealed tube6307 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.026
ω scansθmax = 27.5°, θmin = 1.6°
Absorption correction: multi-scan (SADABS; Bruker, 2008)h = −14→14
Tmin = 0.88, Tmax = 0.99k = −7→7
19532 measured reflectionsl = −32→33
Refinement on F2Secondary atom site location: difference Fourier map
Least-squares matrix: fullHydrogen site location: inferred from neighbouring sites
R[F2 > 2σ(F2)] = 0.040H-atom parameters constrained
wR(F2) = 0.086w = 1/[σ2(Fo2) + (0.0332P)2 + 0.3913P] where P = (Fo2 + 2Fc2)/3
S = 1.05(Δ/σ)max = 0.001
7699 reflectionsΔρmax = 0.22 e Å3
409 parametersΔρmin = −0.25 e Å3
1 restraintAbsolute structure: Flack x determined using 2415 quotients [(I+)-(I-)]/[(I+)+(I-)] (Parsons et al., 2013)
Primary atom site location: structure-invariant direct methodsAbsolute structure parameter: 0.00 (3)
Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes.
xyzUiso*/Ueq
S1A0.17551 (7)0.37685 (12)0.89628 (3)0.0306 (2)
O1A0.37713 (16)0.8791 (4)0.92762 (7)0.0258 (5)
O2A−0.04290 (17)0.8246 (4)0.84881 (8)0.0391 (6)
O3A0.07144 (17)0.8801 (4)0.92603 (8)0.0334 (5)
O4A0.25361 (16)0.8018 (3)1.02566 (7)0.0287 (5)
O5A0.40692 (16)0.7475 (3)1.09140 (7)0.0277 (5)
N1A0.23825 (18)0.6385 (4)0.88732 (9)0.0217 (5)
N2A0.40950 (19)0.5788 (4)1.01516 (8)0.0249 (5)
H2AN0.48070.53621.02860.030*
C1A0.2486 (2)0.3592 (5)0.96298 (11)0.0276 (6)
H1A10.19830.42060.98770.033*
H1A20.26870.20090.97270.033*
C2A0.3596 (2)0.5013 (5)0.96366 (10)0.0222 (6)
H2A0.41990.40620.94970.027*
C3A0.3281 (2)0.6971 (5)0.92527 (10)0.0202 (6)
C4A0.1701 (2)0.8095 (5)0.85499 (10)0.0224 (6)
H4A0.21290.95520.86270.027*
C5A0.0523 (2)0.8373 (5)0.87466 (11)0.0255 (6)
C6A−0.0312 (3)0.8925 (7)0.95220 (12)0.0433 (9)
H6A1−0.07950.75770.94390.065*
H6A2−0.07691.02700.94030.065*
H6A3−0.00680.90120.99020.065*
C7A0.1596 (3)0.7759 (5)0.79545 (11)0.0300 (7)
H7A0.10220.89040.77880.036*
C8A0.1133 (3)0.5449 (6)0.77637 (12)0.0399 (8)
H8A10.04160.51080.79130.060*
H8A20.17280.42990.78760.060*
H8A30.09580.54550.73800.060*
C9A0.2768 (3)0.8254 (7)0.77685 (13)0.0466 (9)
H9A10.33490.71310.79160.070*
H9A20.30370.97630.78860.070*
H9A30.26720.81860.73840.070*
C10A0.3474 (2)0.7172 (5)1.04305 (10)0.0226 (6)
C11A0.3593 (3)0.8922 (5)1.13002 (11)0.0299 (7)
C12A0.3575 (3)1.1359 (6)1.11241 (13)0.0390 (8)
H12A0.30391.15221.07940.058*
H12B0.43681.18161.10710.058*
H12C0.33081.23171.13930.058*
C13A0.4492 (3)0.8548 (8)1.17880 (12)0.0547 (11)
H13A0.52720.89941.17150.082*
H13B0.45010.69491.18850.082*
H13C0.42800.94591.20780.082*
C14A0.2390 (3)0.8122 (6)1.13960 (13)0.0423 (9)
H14A0.24110.64901.14580.063*
H14B0.18110.84641.10880.063*
H14C0.21710.88941.17040.063*
S1B0.82980 (7)0.48748 (12)0.60817 (3)0.0323 (2)
O1B0.61995 (16)0.9736 (4)0.57159 (7)0.0273 (5)
O2B1.03914 (18)0.9218 (4)0.65232 (9)0.0431 (7)
O3B0.92605 (17)1.0176 (4)0.57700 (8)0.0322 (5)
O4B0.74978 (16)0.8851 (4)0.47590 (7)0.0291 (5)
O5B0.59660 (16)0.8252 (4)0.41038 (7)0.0289 (5)
N1B0.76343 (19)0.7473 (4)0.61334 (9)0.0228 (5)
N2B0.5954 (2)0.6591 (4)0.48677 (8)0.0249 (5)
H2BN0.52570.60950.47290.030*
C1B0.7557 (3)0.4505 (5)0.54193 (11)0.0281 (7)
H1B10.80530.50480.51610.034*
H1B20.73650.28970.53480.034*
C2B0.6441 (2)0.5915 (5)0.53926 (10)0.0215 (6)
H2B0.58380.49860.55380.026*
C3B0.6726 (2)0.7945 (5)0.57522 (10)0.0202 (6)
C4B0.8258 (2)0.9234 (5)0.64632 (10)0.0225 (6)
H4B0.78081.06680.63880.027*
C5B0.9443 (3)0.9547 (5)0.62751 (11)0.0263 (7)
C6B1.0263 (3)1.0160 (8)0.54915 (13)0.0472 (9)
H6B11.07370.88100.55890.071*
H6B21.07401.15100.55840.071*
H6B30.99931.01480.51130.071*
C7B0.8375 (3)0.8825 (5)0.70572 (11)0.0292 (6)
H7B0.89950.76580.71560.035*
C8B0.7239 (3)0.7992 (8)0.72175 (14)0.0514 (10)
H8B10.70500.65020.70630.077*
H8B20.66060.90500.70930.077*
H8B30.73230.78820.76010.077*
C9B0.8768 (3)1.1022 (6)0.73369 (12)0.0405 (8)
H9B10.81661.21800.72450.061*
H9B20.95081.15210.72280.061*
H9B30.88831.07770.77170.061*
C10B0.6558 (2)0.7978 (5)0.45889 (10)0.0242 (6)
C11B0.6433 (3)0.9681 (6)0.37099 (11)0.0320 (7)
C12B0.6446 (3)1.2118 (6)0.38854 (14)0.0455 (9)
H12D0.67191.30760.36170.068*
H12E0.69771.22820.42170.068*
H12F0.56521.25730.39360.068*
C13B0.7631 (3)0.8901 (7)0.36143 (14)0.0492 (9)
H13D0.76240.72600.35670.074*
H13E0.82140.93040.39160.074*
H13F0.78330.96300.32980.074*
C14B0.5525 (4)0.9286 (8)0.32308 (13)0.0617 (13)
H14D0.55470.77020.31240.093*
H14E0.56971.02550.29430.093*
H14F0.47420.96460.33150.093*
U11U22U33U12U13U23
S1A0.0326 (5)0.0190 (4)0.0366 (4)−0.0017 (3)−0.0067 (4)−0.0018 (3)
O1A0.0176 (10)0.0280 (12)0.0308 (11)−0.0052 (9)0.0005 (8)0.0013 (9)
O2A0.0231 (11)0.0551 (16)0.0367 (12)0.0073 (10)−0.0034 (9)0.0028 (11)
O3A0.0255 (11)0.0482 (14)0.0262 (11)0.0065 (10)0.0035 (8)−0.0077 (10)
O4A0.0221 (10)0.0357 (13)0.0275 (11)0.0075 (9)0.0005 (8)−0.0033 (9)
O5A0.0258 (11)0.0327 (12)0.0236 (10)0.0037 (9)−0.0001 (8)−0.0046 (9)
N1A0.0168 (11)0.0180 (12)0.0288 (13)0.0022 (9)−0.0014 (9)−0.0016 (10)
N2A0.0201 (12)0.0323 (14)0.0214 (12)0.0059 (10)−0.0002 (9)−0.0031 (10)
C1A0.0310 (15)0.0246 (15)0.0273 (15)−0.0011 (13)0.0044 (12)−0.0013 (13)
C2A0.0183 (13)0.0266 (15)0.0215 (14)0.0064 (12)0.0025 (10)−0.0002 (12)
C3A0.0153 (13)0.0251 (15)0.0206 (14)0.0021 (11)0.0040 (11)−0.0017 (11)
C4A0.0205 (13)0.0208 (15)0.0247 (14)0.0047 (11)−0.0013 (11)−0.0015 (11)
C5A0.0235 (14)0.0217 (15)0.0302 (15)0.0049 (11)0.0002 (12)0.0018 (12)
C6A0.0353 (18)0.060 (2)0.0372 (18)0.0117 (18)0.0127 (14)0.0000 (17)
C7A0.0307 (15)0.0352 (18)0.0231 (15)0.0053 (14)0.0009 (12)−0.0019 (13)
C8A0.049 (2)0.039 (2)0.0301 (17)0.0009 (16)0.0002 (15)−0.0087 (14)
C9A0.044 (2)0.059 (3)0.0393 (19)0.0004 (18)0.0137 (15)−0.0010 (17)
C10A0.0209 (14)0.0242 (15)0.0226 (14)−0.0020 (11)0.0027 (11)0.0008 (11)
C11A0.0335 (16)0.0327 (18)0.0242 (15)−0.0018 (14)0.0063 (13)−0.0067 (13)
C12A0.0441 (19)0.0284 (18)0.047 (2)−0.0075 (15)0.0164 (16)−0.0039 (15)
C13A0.066 (3)0.066 (3)0.0271 (18)0.007 (2)−0.0105 (17)−0.0095 (18)
C14A0.053 (2)0.042 (2)0.0364 (18)−0.0120 (17)0.0213 (16)−0.0065 (15)
S1B0.0358 (5)0.0192 (4)0.0375 (5)0.0025 (3)−0.0100 (4)0.0014 (3)
O1B0.0231 (11)0.0299 (12)0.0273 (11)0.0050 (9)−0.0020 (8)−0.0014 (9)
O2B0.0224 (11)0.0622 (18)0.0414 (13)−0.0038 (11)−0.0060 (10)0.0064 (12)
O3B0.0287 (11)0.0411 (14)0.0273 (11)−0.0026 (10)0.0054 (9)0.0025 (10)
O4B0.0228 (10)0.0369 (12)0.0271 (10)−0.0081 (10)0.0017 (8)0.0049 (9)
O5B0.0277 (11)0.0373 (13)0.0204 (10)−0.0046 (9)−0.0003 (8)0.0041 (9)
N1B0.0228 (12)0.0168 (12)0.0269 (12)−0.0019 (9)−0.0028 (10)0.0016 (9)
N2B0.0213 (12)0.0314 (14)0.0208 (12)−0.0082 (10)−0.0007 (9)0.0019 (10)
C1B0.0312 (16)0.0242 (16)0.0285 (16)0.0035 (12)0.0034 (13)0.0009 (12)
C2B0.0210 (13)0.0234 (14)0.0198 (13)−0.0046 (11)0.0015 (11)0.0019 (11)
C3B0.0132 (12)0.0253 (15)0.0225 (14)−0.0028 (11)0.0041 (10)0.0018 (11)
C4B0.0239 (14)0.0183 (14)0.0236 (14)−0.0009 (11)−0.0026 (11)0.0009 (11)
C5B0.0268 (16)0.0222 (15)0.0290 (16)−0.0040 (12)0.0011 (12)−0.0005 (12)
C6B0.042 (2)0.061 (3)0.042 (2)−0.0102 (19)0.0164 (16)−0.0010 (18)
C7B0.0307 (15)0.0292 (16)0.0264 (15)0.0029 (14)−0.0009 (12)0.0044 (13)
C8B0.050 (2)0.066 (3)0.040 (2)−0.011 (2)0.0131 (16)0.0059 (18)
C9B0.052 (2)0.040 (2)0.0262 (16)0.0019 (16)−0.0044 (15)−0.0033 (15)
C10B0.0219 (14)0.0279 (16)0.0228 (14)0.0028 (12)0.0032 (11)0.0009 (12)
C11B0.0347 (17)0.0374 (19)0.0245 (16)0.0024 (14)0.0066 (13)0.0086 (13)
C12B0.053 (2)0.037 (2)0.050 (2)0.0086 (17)0.0193 (17)0.0127 (16)
C13B0.058 (2)0.052 (2)0.043 (2)0.014 (2)0.0264 (17)0.0134 (18)
C14B0.068 (3)0.085 (4)0.0281 (19)−0.010 (2)−0.0056 (18)0.018 (2)
S1A—N1A1.740 (2)S1B—N1B1.733 (2)
S1A—C1A1.803 (3)S1B—C1B1.807 (3)
O1A—C3A1.215 (3)O1B—C3B1.219 (3)
O2A—C5A1.200 (3)O2B—C5B1.199 (3)
O3A—C5A1.334 (3)O3B—C5B1.340 (3)
O3A—C6A1.444 (4)O3B—C6B1.444 (4)
O4A—C10A1.215 (3)O4B—C10B1.222 (3)
O5A—C10A1.344 (3)O5B—C10B1.344 (3)
O5A—C11A1.477 (3)O5B—C11B1.481 (4)
N1A—C3A1.361 (3)N1B—C3B1.356 (3)
N1A—C4A1.465 (3)N1B—C4B1.466 (3)
N2A—C10A1.360 (4)N2B—C10B1.349 (4)
N2A—C2A1.442 (3)N2B—C2B1.443 (3)
N2A—H2AN0.8800N2B—H2BN0.8800
C1A—C2A1.529 (4)C1B—C2B1.526 (4)
C1A—H1A10.9900C1B—H1B10.9900
C1A—H1A20.9900C1B—H1B20.9900
C2A—C3A1.534 (4)C2B—C3B1.525 (4)
C2A—H2A1.0000C2B—H2B1.0000
C4A—C5A1.523 (4)C4B—C5B1.523 (4)
C4A—C7A1.533 (4)C4B—C7B1.535 (4)
C4A—H4A1.0000C4B—H4B1.0000
C6A—H6A10.9800C6B—H6B10.9800
C6A—H6A20.9800C6B—H6B20.9800
C6A—H6A30.9800C6B—H6B30.9800
C7A—C9A1.524 (4)C7B—C8B1.510 (4)
C7A—C8A1.525 (5)C7B—C9B1.526 (5)
C7A—H7A1.0000C7B—H7B1.0000
C8A—H8A10.9800C8B—H8B10.9800
C8A—H8A20.9800C8B—H8B20.9800
C8A—H8A30.9800C8B—H8B30.9800
C9A—H9A10.9800C9B—H9B10.9800
C9A—H9A20.9800C9B—H9B20.9800
C9A—H9A30.9800C9B—H9B30.9800
C11A—C12A1.514 (5)C11B—C13B1.507 (4)
C11A—C14A1.518 (4)C11B—C12B1.513 (5)
C11A—C13A1.523 (4)C11B—C14B1.516 (4)
C12A—H12A0.9800C12B—H12D0.9800
C12A—H12B0.9800C12B—H12E0.9800
C12A—H12C0.9800C12B—H12F0.9800
C13A—H13A0.9800C13B—H13D0.9800
C13A—H13B0.9800C13B—H13E0.9800
C13A—H13C0.9800C13B—H13F0.9800
C14A—H14A0.9800C14B—H14D0.9800
C14A—H14B0.9800C14B—H14E0.9800
C14A—H14C0.9800C14B—H14F0.9800
N1A—S1A—C1A91.87 (13)N1B—S1B—C1B91.57 (12)
C5A—O3A—C6A116.4 (2)C5B—O3B—C6B117.1 (2)
C10A—O5A—C11A120.8 (2)C10B—O5B—C11B121.4 (2)
C3A—N1A—C4A121.3 (2)C3B—N1B—C4B122.3 (2)
C3A—N1A—S1A114.78 (19)C3B—N1B—S1B115.47 (19)
C4A—N1A—S1A119.59 (17)C4B—N1B—S1B119.55 (17)
C10A—N2A—C2A120.6 (2)C10B—N2B—C2B120.5 (2)
C10A—N2A—H2AN119.7C10B—N2B—H2BN119.8
C2A—N2A—H2AN119.7C2B—N2B—H2BN119.8
C2A—C1A—S1A104.66 (19)C2B—C1B—S1B104.80 (19)
C2A—C1A—H1A1110.8C2B—C1B—H1B1110.8
S1A—C1A—H1A1110.8S1B—C1B—H1B1110.8
C2A—C1A—H1A2110.8C2B—C1B—H1B2110.8
S1A—C1A—H1A2110.8S1B—C1B—H1B2110.8
H1A1—C1A—H1A2108.9H1B1—C1B—H1B2108.9
N2A—C2A—C1A114.0 (2)N2B—C2B—C3B111.7 (2)
N2A—C2A—C3A112.2 (2)N2B—C2B—C1B113.9 (2)
C1A—C2A—C3A106.9 (2)C3B—C2B—C1B107.4 (2)
N2A—C2A—H2A107.9N2B—C2B—H2B107.9
C1A—C2A—H2A107.9C3B—C2B—H2B107.9
C3A—C2A—H2A107.9C1B—C2B—H2B107.9
O1A—C3A—N1A124.2 (2)O1B—C3B—N1B123.9 (3)
O1A—C3A—C2A125.1 (2)O1B—C3B—C2B125.4 (2)
N1A—C3A—C2A110.7 (2)N1B—C3B—C2B110.6 (2)
N1A—C4A—C5A108.3 (2)N1B—C4B—C5B106.8 (2)
N1A—C4A—C7A115.9 (2)N1B—C4B—C7B115.4 (2)
C5A—C4A—C7A113.6 (2)C5B—C4B—C7B112.5 (2)
N1A—C4A—H4A106.1N1B—C4B—H4B107.3
C5A—C4A—H4A106.1C5B—C4B—H4B107.3
C7A—C4A—H4A106.1C7B—C4B—H4B107.3
O2A—C5A—O3A124.7 (3)O2B—C5B—O3B124.4 (3)
O2A—C5A—C4A126.5 (3)O2B—C5B—C4B126.8 (3)
O3A—C5A—C4A108.9 (2)O3B—C5B—C4B108.7 (2)
O3A—C6A—H6A1109.5O3B—C6B—H6B1109.5
O3A—C6A—H6A2109.5O3B—C6B—H6B2109.5
H6A1—C6A—H6A2109.5H6B1—C6B—H6B2109.5
O3A—C6A—H6A3109.5O3B—C6B—H6B3109.5
H6A1—C6A—H6A3109.5H6B1—C6B—H6B3109.5
H6A2—C6A—H6A3109.5H6B2—C6B—H6B3109.5
C9A—C7A—C8A110.8 (3)C8B—C7B—C9B111.1 (3)
C9A—C7A—C4A110.1 (2)C8B—C7B—C4B111.7 (2)
C8A—C7A—C4A114.4 (3)C9B—C7B—C4B108.2 (2)
C9A—C7A—H7A107.1C8B—C7B—H7B108.6
C8A—C7A—H7A107.1C9B—C7B—H7B108.6
C4A—C7A—H7A107.1C4B—C7B—H7B108.6
C7A—C8A—H8A1109.5C7B—C8B—H8B1109.5
C7A—C8A—H8A2109.5C7B—C8B—H8B2109.5
H8A1—C8A—H8A2109.5H8B1—C8B—H8B2109.5
C7A—C8A—H8A3109.5C7B—C8B—H8B3109.5
H8A1—C8A—H8A3109.5H8B1—C8B—H8B3109.5
H8A2—C8A—H8A3109.5H8B2—C8B—H8B3109.5
C7A—C9A—H9A1109.5C7B—C9B—H9B1109.5
C7A—C9A—H9A2109.5C7B—C9B—H9B2109.5
H9A1—C9A—H9A2109.5H9B1—C9B—H9B2109.5
C7A—C9A—H9A3109.5C7B—C9B—H9B3109.5
H9A1—C9A—H9A3109.5H9B1—C9B—H9B3109.5
H9A2—C9A—H9A3109.5H9B2—C9B—H9B3109.5
O4A—C10A—O5A126.4 (3)O4B—C10B—O5B125.9 (3)
O4A—C10A—N2A124.1 (2)O4B—C10B—N2B124.4 (2)
O5A—C10A—N2A109.5 (2)O5B—C10B—N2B109.7 (2)
O5A—C11A—C12A110.1 (2)O5B—C11B—C13B111.5 (3)
O5A—C11A—C14A111.3 (2)O5B—C11B—C12B109.3 (3)
C12A—C11A—C14A112.0 (3)C13B—C11B—C12B111.8 (3)
O5A—C11A—C13A101.4 (3)O5B—C11B—C14B101.1 (3)
C12A—C11A—C13A111.4 (3)C13B—C11B—C14B111.1 (3)
C14A—C11A—C13A110.3 (3)C12B—C11B—C14B111.5 (3)
C11A—C12A—H12A109.5C11B—C12B—H12D109.5
C11A—C12A—H12B109.5C11B—C12B—H12E109.5
H12A—C12A—H12B109.5H12D—C12B—H12E109.5
C11A—C12A—H12C109.5C11B—C12B—H12F109.5
H12A—C12A—H12C109.5H12D—C12B—H12F109.5
H12B—C12A—H12C109.5H12E—C12B—H12F109.5
C11A—C13A—H13A109.5C11B—C13B—H13D109.5
C11A—C13A—H13B109.5C11B—C13B—H13E109.5
H13A—C13A—H13B109.5H13D—C13B—H13E109.5
C11A—C13A—H13C109.5C11B—C13B—H13F109.5
H13A—C13A—H13C109.5H13D—C13B—H13F109.5
H13B—C13A—H13C109.5H13E—C13B—H13F109.5
C11A—C14A—H14A109.5C11B—C14B—H14D109.5
C11A—C14A—H14B109.5C11B—C14B—H14E109.5
H14A—C14A—H14B109.5H14D—C14B—H14E109.5
C11A—C14A—H14C109.5C11B—C14B—H14F109.5
H14A—C14A—H14C109.5H14D—C14B—H14F109.5
H14B—C14A—H14C109.5H14E—C14B—H14F109.5
C1A—S1A—N1A—C3A13.0 (2)C1B—S1B—N1B—C3B12.9 (2)
C1A—S1A—N1A—C4A−144.0 (2)C1B—S1B—N1B—C4B−148.9 (2)
N1A—S1A—C1A—C2A−27.2 (2)N1B—S1B—C1B—C2B−26.1 (2)
C10A—N2A—C2A—C1A−61.9 (3)C10B—N2B—C2B—C3B57.7 (3)
C10A—N2A—C2A—C3A59.8 (3)C10B—N2B—C2B—C1B−64.2 (3)
S1A—C1A—C2A—N2A158.7 (2)S1B—C1B—C2B—N2B157.0 (2)
S1A—C1A—C2A—C3A34.2 (3)S1B—C1B—C2B—C3B32.7 (3)
C4A—N1A—C3A—O1A−18.2 (4)C4B—N1B—C3B—O1B−15.1 (4)
S1A—N1A—C3A—O1A−174.7 (2)S1B—N1B—C3B—O1B−176.4 (2)
C4A—N1A—C3A—C2A162.8 (2)C4B—N1B—C3B—C2B166.6 (2)
S1A—N1A—C3A—C2A6.2 (3)S1B—N1B—C3B—C2B5.3 (3)
N2A—C2A—C3A—O1A28.5 (4)N2B—C2B—C3B—O1B30.9 (4)
C1A—C2A—C3A—O1A154.1 (3)C1B—C2B—C3B—O1B156.4 (3)
N2A—C2A—C3A—N1A−152.5 (2)N2B—C2B—C3B—N1B−150.9 (2)
C1A—C2A—C3A—N1A−26.8 (3)C1B—C2B—C3B—N1B−25.3 (3)
C3A—N1A—C4A—C5A−103.6 (3)C3B—N1B—C4B—C5B−106.0 (3)
S1A—N1A—C4A—C5A51.9 (3)S1B—N1B—C4B—C5B54.6 (3)
C3A—N1A—C4A—C7A127.3 (3)C3B—N1B—C4B—C7B128.2 (3)
S1A—N1A—C4A—C7A−77.2 (3)S1B—N1B—C4B—C7B−71.3 (3)
C6A—O3A—C5A—O2A5.4 (5)C6B—O3B—C5B—O2B8.6 (5)
C6A—O3A—C5A—C4A−174.9 (3)C6B—O3B—C5B—C4B−169.0 (3)
N1A—C4A—C5A—O2A−126.7 (3)N1B—C4B—C5B—O2B−117.3 (3)
C7A—C4A—C5A—O2A3.7 (4)C7B—C4B—C5B—O2B10.3 (4)
N1A—C4A—C5A—O3A53.7 (3)N1B—C4B—C5B—O3B60.1 (3)
C7A—C4A—C5A—O3A−176.0 (2)C7B—C4B—C5B—O3B−172.3 (2)
N1A—C4A—C7A—C9A−71.8 (3)N1B—C4B—C7B—C8B−44.0 (4)
C5A—C4A—C7A—C9A161.7 (3)C5B—C4B—C7B—C8B−166.8 (3)
N1A—C4A—C7A—C8A53.7 (3)N1B—C4B—C7B—C9B−166.6 (3)
C5A—C4A—C7A—C8A−72.8 (3)C5B—C4B—C7B—C9B70.6 (3)
C11A—O5A—C10A—O4A1.1 (4)C11B—O5B—C10B—O4B1.0 (4)
C11A—O5A—C10A—N2A179.7 (2)C11B—O5B—C10B—N2B−179.4 (2)
C2A—N2A—C10A—O4A−7.4 (4)C2B—N2B—C10B—O4B−4.3 (4)
C2A—N2A—C10A—O5A173.9 (2)C2B—N2B—C10B—O5B176.1 (2)
C10A—O5A—C11A—C12A−67.5 (3)C10B—O5B—C11B—C13B57.3 (4)
C10A—O5A—C11A—C14A57.3 (3)C10B—O5B—C11B—C12B−66.9 (4)
C10A—O5A—C11A—C13A174.5 (3)C10B—O5B—C11B—C14B175.4 (3)
D—H···AD—HH···AD···AD—H···A
N2A—H2AN···O1Ai0.882.072.925 (3)164
N2B—H2BN···O1Bii0.882.052.921 (3)169
C2A—H2A···O5Ai1.002.573.549 (3)167
C1B—H1B2···O1Biii0.992.563.371 (4)139
C4A—H4A···S1Aiv1.002.703.526 (3)140
C4B—H4B···S1Biv1.002.703.488 (3)136
C9B—H9B3···O2Av0.982.523.400 (4)149
  12 in total

1.  The Cambridge Structural Database in retrospect and prospect.

Authors:  Colin R Groom; Frank H Allen
Journal:  Angew Chem Int Ed Engl       Date:  2014-01-02       Impact factor: 15.336

Review 2.  Redox regulation of protein tyrosine phosphatases: structural and chemical aspects.

Authors:  John J Tanner; Zachary D Parsons; Andrea H Cummings; Haiying Zhou; Kent S Gates
Journal:  Antioxid Redox Signal       Date:  2011-04-13       Impact factor: 8.401

3.  The biological buffer bicarbonate/CO2 potentiates H2O2-mediated inactivation of protein tyrosine phosphatases.

Authors:  Haiying Zhou; Harkewal Singh; Zachary D Parsons; Sarah M Lewis; Sanjib Bhattacharya; Derrick R Seiner; Jason N LaButti; Thomas J Reilly; John J Tanner; Kent S Gates
Journal:  J Am Chem Soc       Date:  2011-09-19       Impact factor: 15.419

4.  Selective reduction of peptide isothiazolidin-3-ones.

Authors:  Timothy P Shiau; Daniel A Erlanson; Eric M Gordon
Journal:  Org Lett       Date:  2006-12-07       Impact factor: 6.005

5.  A chemical model for redox regulation of protein tyrosine phosphatase 1B (PTP1B) activity.

Authors:  Santhosh Sivaramakrishnan; Kripa Keerthi; Kent S Gates
Journal:  J Am Chem Soc       Date:  2005-08-10       Impact factor: 15.419

6.  Protection of a single-cysteine redox switch from oxidative destruction: On the functional role of sulfenyl amide formation in the redox-regulated enzyme PTP1B.

Authors:  Santhosh Sivaramakrishnan; Andrea H Cummings; Kent S Gates
Journal:  Bioorg Med Chem Lett       Date:  2009-12-04       Impact factor: 2.823

7.  Oxidation state of the active-site cysteine in protein tyrosine phosphatase 1B.

Authors:  Rob L M van Montfort; Miles Congreve; Dominic Tisi; Robin Carr; Harren Jhoti
Journal:  Nature       Date:  2003-06-12       Impact factor: 49.962

8.  2-(3-Oxo-2,3-dihydro-1,2-benzothia-zol-2-yl)acetic acid.

Authors:  Xiang-Hui Wang; Jian-Xin Yang; Cheng-Hang You; Xue-Mei Tan; Qiang Lin
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2011-11-12

9.  Crystal structure refinement with SHELXL.

Authors:  George M Sheldrick
Journal:  Acta Crystallogr C Struct Chem       Date:  2015-01-01       Impact factor: 1.172

10.  Use of intensity quotients and differences in absolute structure refinement.

Authors:  Simon Parsons; Howard D Flack; Trixie Wagner
Journal:  Acta Crystallogr B Struct Sci Cryst Eng Mater       Date:  2013-05-17
View more
  1 in total

Review 1.  Covalent inhibition of protein tyrosine phosphatases.

Authors:  Kasi Viswanatharaju Ruddraraju; Zhong-Yin Zhang
Journal:  Mol Biosyst       Date:  2017-06-27
  1 in total

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