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C5238

Sigma-Aldrich

Chlorotoxin from Leiurus quinquestriatus (north Africa)

recombinant, expressed in E. coli, ≥98% (HPLC), lyophilized powder

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About This Item

Formule empirique (notation de Hill):
C158H256N52O48S11
Numéro CAS:
163515-35-3
Poids moléculaire :
4004.76
Numéro MDL:
MFCD00239920
Code UNSPSC :
12352200
Nomenclature NACRES :
NA.77

Produit recombinant

expressed in E. coli

Niveau de qualité

100

Pureté

≥98% (HPLC)

Forme

lyophilized powder

Solubilité

aqueous buffer: soluble

Température de stockage

−20°C

InChI

1S/C158H249N53O47S11/c1-77(2)55-96-138(241)205-105(144(247)186-86(125(165)228)28-18-47-173-156(166)167)70-264-262-68-103-131(234)177-63-115(217)176-64-116(218)183-87(25-12-15-44-159)128(231)178-65-117(219)184-88(29-19-48-174-157(168)169)129(232)179-66-118(220)185-89(26-13-16-45-160)133(236)202-107-72-267-269-75-110-149(252)195-98(56-81-23-10-9-11-24-81)143(246)208-124(80(5)213)154(257)209-123(79(4)212)153(256)199-102(61-122(226)227)141(244)196-99(58-83-62-172-76-181-83)139(242)189-92(37-39-113(163)215)136(239)190-94(42-53-260-7)132(235)182-78(3)126(229)187-91(30-20-49-175-158(170)171)134(237)188-90(27-14-17-46-161)135(238)203-108(73-266-265-71-106(146(249)193-96)204-137(240)93(38-40-114(164)216)191-151(254)111-31-21-50-210(111)119(221)67-180-130(233)97(194-147(107)250)57-82-33-35-84(214)36-34-82)148(251)198-100(59-120(222)223)140(243)197-101(60-121(224)225)142(245)206-109(150(253)201-103)74-268-263-69-104(200-127(230)85(162)41-52-259-6)145(248)192-95(43-54-261-8)155(258)211-51-22-32-112(211)152(255)207-110/h9-11,23-24,33-36,62,76-80,85-112,123-124,212-214H,12-22,25-32,37-61,63-75,159-162H2,1-8H3,(H2,163,215)(H2,164,216)(H2,165,228)(H,172,181)(H,176,217)(H,177,234)(H,178,231)(H,179,232)(H,180,233)(H,182,235)(H,183,218)(H,184,219)(H,185,220)(H,186,247)(H,187,229)(H,188,237)(H,189,242)(H,190,239)(H,191,254)(H,192,248)(H,193,249)(H,194,250)(H,195,252)(H,196,244)(H,197,243)(H,198,251)(H,199,256)(H,200,230)(H,201,253)(H,202,236)(H,203,238)(H,204,240)(H,205,241)(H,206,245)(H,207,255)(H,208,246)(H,209,257)(H,222,223)(H,224,225)(H,226,227)(H4,166,167,173)(H4,168,169,174)(H4,170,171,175)/t78-,79+,80+,85-,86-,87-,88-,89-,90-,91-,92-,93-,94-,95-,96-,97-,98-,99-,100-,101-,102-,103-,104-,105-,106-,107-,108-,109-,110-,111-,112-,123-,124-/m0/s1

Clé InChI

QPAKKWCQMHUHNI-GQIQPHNSSA-N

Amino Acid Sequence

Met-Cys-Met-Pro-Cys-Phe-Thr-Thr-Asp-His-Gln-Met-Ala-Arg-Lys-Cys-Asp-Asp-Cys-Cys-Gly-Gly-Lys-Gly-Arg-Gly-Lys-Cys-Tyr-Gly-Pro-Gln-Cys-Leu-Cys-Arg

Actions biochimiques/physiologiques

Chlorotoxin (CLTX) is a peptide isolated from the venom of scorpion Leiurus quinquestriatus. It comprises three lysines at the N-terminal region and four disulfide bonds. It can traverse the blood-brain barrier and can associate specifically with cancer cells especially in neuroblastoma, glioma, and medulloblastoma. CLTX binds to chloride-gated channels (CLC30) and the matrix metalloproteinase-2 (MMP2) in glioma cells. It is exploited in the imaging probe preparations for aiding non-cancer and cancer cell differentiation.
Potent blocker of small-conductance Cl- channels.

Caractéristiques et avantages

This compound is featured on the Chloride Channels page of the Handbook of Receptor Classification and Signal Transduction. To browse other handbook pages, click here.

Code de la classe de stockage

11 - Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Équipement de protection individuelle

Eyeshields, Gloves, type N95 (US)

Certificats d'analyse (COA)

Recherchez un Certificats d'analyse (COA) en saisissant le numéro de lot du produit. Les numéros de lot figurent sur l'étiquette du produit après les mots "Lot" ou "Batch".

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Consulter la Bibliothèque de documents

N Ullrich et al.
Neuroscience, 83(4), 1161-1173 (1998-03-21)
Using whole-cell patch-clamp recordings, we identified a novel voltage-activated chloride current that was selectively expressed in glioma cells from 23 patient biopsies. Chloride currents were identified in 64% of glioma cells studied in acute slices of nine patient biopsies. These
Paola G Ojeda et al.
Biopolymers, 108(5) (2017-05-02)
Chlorotoxin (CTX), a disulfide-rich peptide from the scorpion Leiurus quinquestriatus, has several promising biopharmaceutical properties, including preferential affinity for certain cancer cells, high serum stability, and cell penetration. These properties underpin its potential for use as a drug design scaffold
Amber Emmerson et al.
The Journal of clinical investigation, 128(7), 3088-3101 (2018-04-25)
The superoxide-generating enzyme Nox2 contributes to hypertension and cardiovascular remodeling triggered by activation of the renin-angiotensin system. Multiple Nox2-expressing cells are implicated in angiotensin II-induced (Ang II-induced) pathophysiology, but the importance of Nox2 in leukocyte subsets is poorly understood. Here
Dorra Aissaoui et al.
International journal of biological macromolecules, 111, 1146-1155 (2018-02-09)
Voltage-gated potassium (Kv) channels are known to play a pivotal role in the progression of various cancer types and considered as new targets for designing anti-cancer therapy. However, the fact that many Kv channels are expressed in different cell lines
J A DeBin et al.
The American journal of physiology, 264(2 Pt 1), C361-C369 (1993-02-01)
We have previously demonstrated that the venom of the scorpion Leiurus quinquestriatus blocks small-conductance Cl- channels, derived from epithelial cells, when applied to the cytoplasmic surface. We have now purified to near homogeneity, and characterized, the component responsible for this
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