C5238

Chlorotoxin from Leiurus quinquestriatus (north Africa)

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

• Empirical Formula (Hill Notation): C₁₅₈H₂₅₆N₅₂O₄₈S₁₁
• CAS Number: 163515-35-3
• Molecular Weight: 4004.76
• UNSPSC Code: 12352200
• NACRES: NA.77
• MDL number: MFCD00239920
• Assay: ≥98% (HPLC)
• Form: lyophilized powder

Properties

• recombinant: expressed in E. coli
• Quality Segment: 100
• assay: ≥98% (HPLC)
• form: lyophilized powder
• solubility: aqueous buffer: soluble
• storage temp.: −20°C
• SMILES string: S1SC[C@@H]2NC(=O)[C@@H](NC(=O)CNC(=O)[C@@H](NC(=O)CNC(=O)[C@@H](NC(=O)CNC(=O)CNC(=O)[C@H]3NC(=O)[C@H]4NC(=O)[C@@H](NC(=O)[C@@H](NC(=O)[C@@H](NC(=O)[C@@H](NC(=O)[C@@H](NC(=O)[C@@H](NC(=O)[C@@H](NC(=O)[C@@H](NC(=O)[C@@H](NC(=O)[C@@H](NC(=O)[C@@H](NC(=O)[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
• InChI key: QPAKKWCQMHUHNI-GQIQPHNSSA-N

Description

Biochem/physiol Actions

Chlorotoxin (CLTX) is a peptide isolated from the venom of scorpion Leiurus quinquestriatus.[1] It comprises three lysines at the N-terminal region and four disulfide bonds.[2] It can traverse the blood-brain barrier and can associate specifically with cancer cells especially in neuroblastoma, glioma, and medulloblastoma.[2] CLTX binds to chloride-gated channels (CLC30) and the matrix metalloproteinase-2 (MMP2) in glioma cells.[1] It is exploited in the imaging probe preparations for aiding non-cancer and cancer cell differentiation.[3]

Potent blocker of small-conductance Cl^- channels.

Features and Benefits

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.

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Gloves, type N95 (US)