253375
3-Maleimido-PROXYL
free radical
Synonym(s):
3-Maleimido-2,2,5,5-tetramethyl-1-pyrrolidinyloxy, free radical
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About This Item
Empirical Formula (Hill Notation):
C12H17N2O3
CAS Number:
Molecular Weight:
237.27
NACRES:
NA.22
PubChem Substance ID:
UNSPSC Code:
12352005
MDL number:
InChI
1S/C12H17N2O3/c1-11(2)7-8(12(3,4)14(11)17)13-9(15)5-6-10(13)16/h5-6,8H,7H2,1-4H3
SMILES string
CC1(C)CC(N2C(=O)C=CC2=O)C(C)(C)N1[O]
InChI key
HGNHBHXFYUYUIA-UHFFFAOYSA-N
mp
111-113 °C (lit.)
functional group
imide, maleimide
storage temp.
2-8°C
Quality Level
Application
Spin label used for study of local protein structure and for determining molecular changes in erythrocyte membranes.
signalword
Warning
hcodes
Hazard Classifications
Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
target_organs
Respiratory system
Storage Class
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
dust mask type N95 (US), Eyeshields, Gloves
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D Daveloose et al.
Biochimica et biophysica acta, 763(1), 41-49 (1983-08-17)
A new spin-label method for the measurement of the internal microviscosity of erythrocyte is presented. The spin label used is 2,2',5,5'-tetramethyl-3-maleimidopyrrolidinyl-N-oxyl (MAL-5) which penetrates inside the red blood cell and binds covalently on cytoplasmic glutathione. After washing off the external
H S Mchaourab et al.
Biochemistry, 32(44), 11895-11902 (1993-11-09)
A spin-labeled derivative of the ion channel peptide cecropin AD (Fink et al., 1988) was synthesized and used to investigate its aggregation state in water and in the presence of a helix-promoting solvent. A cysteine was introduced at position 33
P G Fajer et al.
Biophysical journal, 53(4), 513-524 (1988-04-01)
We have used electron paramagnetic resonance (EPR) to investigate the orientation, rotational motion, and actin-binding properties of rabbit psoas muscle cross-bridges in the presence of the nonhydrolyzable nucleotide analogue, 5'-adenylylimido-diphosphate (AMPPNP). This analogue is known to decrease muscle tension without
J Deinum et al.
Biochimica et biophysica acta, 870(2), 226-233 (1986-03-28)
EPR titration of tubulin with an allocolchicine spin probe showed more than one binding site: one high-affinity binding site (Kd = 8 microM), consistent with the Ki found for competition with colchicine, and one or more low-affinity site(s) (Kd higher
T Páli et al.
Biochemistry, 38(43), 14311-14319 (1999-11-26)
The 16-kDa proteolipid from the hepatopancreas of Nephrops norvegicus belongs to the class of channel proteins that includes the proton-translocation subunit of the vacuolar ATPases. The membranous 16-kDa protein from Nephrops was covalently spin-labeled on the unique cysteine Cys54, with
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