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Merck

M8278

Margatoxin

Synonym(s):

MgTx

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About This Item

Empirical Formula (Hill Notation):
C178H286N52O50S7
CAS Number:
145808-47-5
Molecular Weight:
4178.95
UNSPSC Code:
12352200
NACRES:
NA.32
MDL number:
MFCD00132225

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SMILES string

S1SCC2NC(=O)C(NC(=O)CNC(=O)C(NC(=O)C(NC(=O)C3NC(=O)C(NC(=O)C(NC(=O)CNC(=O)C(NC(=O)C(NC(=O)C(NC(=O)CNC(=O)C(NC(=O)C(NC(=O)C(NC(=O)C(NC(=O)C(NC(=O)C8N(CCC8)C(=O)C9N(CCC9)C(=O)C(NC(=O)C(NC(=O)C(NC(=O)C(NC(=O)C%10N(CCC%10)C(=O)C(NC(=O)C(NC(=O)C(CSSC3)NC(=O)C(

InChI

1S/C178H286N52O50S7/c1-15-91(7)140(225-172(273)141(92(8)16-2)224-169(270)138(190)96(12)233)171(272)211-114(75-134(189)240)158(259)223-139(90(5)6)170(271)208-107(43-25-31-64-184)153(254)221-125-87-287-283-83-121-161(262)206-111(58-69-281-14)157(258)210-113(74-133(188)239)147(248)194-78-136(242)199-102(38-20-26-59-179)149(250)217-120-82-282-284-84-122(220-156(257)110(54-57-132(187)238)205-150(251)106(42-24-30-63-183)207-166(267)126-44-33-66-228(126)176(277)119(81-232)216-173(274)142(97(13)234)226-165(125)266)163(264)212-115(70-89(3)4)174(275)230-68-35-47-129(230)177(278)229-67-34-46-128(229)168(269)222-124(86-286-285-85-123(219-152(253)105(204-160(120)261)41-23-29-62-182)164(265)213-116(72-99-48-50-101(235)51-49-99)175(276)227-65-32-45-127(227)167(268)214-117(178(279)280)73-100-76-191-88-195-100)162(263)203-103(39-21-27-60-180)148(249)198-95(11)145(246)202-109(53-56-131(186)237)155(256)209-112(71-98-36-18-17-19-37-98)146(247)193-79-137(243)200-108(52-55-130(185)236)154(255)215-118(80-231)159(260)197-93(9)143(244)192-77-135(241)196-94(10)144(245)201-104(151(252)218-121)40-22-28-61-181/h17-19,36-37,48-51,76,88-97,102-129,138-142,231-235H,15-16,20-35,38-47,52-75,77-87,179-184,190H2,1-14H3,(H2,185,236)(H2,186,237)(H2,187,238)(H2,188,239)(H2,189,240)(H,191,195)(H,192,244)(H,193,247)(H,194,248)(H,196,241)(H,197,260)(H,198,249)(H,199,242)(H,200,243)(H,201,245)(H,202,246)(H,203,263)(H,204,261)(H,205,251)(H,206,262)(H,207,267)(H,208,271)(H,209,256)(H,210,258)(H,211,272)(H,212,264)(H,213,265)(H,214,268)(H,215,255)(H,216,274)(H,217,250)(H,218,252)(H,219,253)(H,220,257)(H,221,254)(H,222,269)(H,223,259)(H,224,270)(H,225,273)(H,226,266)(H,279,280)

InChI key

OVJBOPBBHWOWJI-UHFFFAOYSA-N

form

powder

storage temp.

−20°C

Quality Level

200

Gene Information

human ... CACNA1D(776)
mouse ... CACNA1D(12289)
rat ... CACNA1D(29716)

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This Item
A2202EMU066361EMU084311
Margatoxin

Sigma-Aldrich

M8278

Margatoxin

ω-Agatoxin TK ~98% (HPLC), powder

Sigma-Aldrich

A2202

ω-Agatoxin TK

MISSION® esiRNA targeting mouse Cacna1a

Sigma-Aldrich

EMU066361

MISSION® esiRNA

MISSION® esiRNA targeting mouse Cacna1c

Sigma-Aldrich

EMU084311

MISSION® esiRNA

Quality Level

200

Quality Level

200

Quality Level

100

Quality Level

100

form

powder

form

powder

form

lyophilized powder

form

lyophilized powder

Gene Information

human ... CACNA1D(776)
mouse ... CACNA1D(12289)
rat ... CACNA1D(29716)

Gene Information

human ... CACNA1A(773)
mouse ... CACNA1A(12286)
rat ... CACNA1A(25398)

Gene Information

mouse ... CACNA1A(12286), Cacna1a(12286)

Gene Information

mouse ... CACNA1C(12288), Cacna1c(12288)

storage temp.

−20°C

storage temp.

−20°C

storage temp.

−20°C

storage temp.

−20°C

Biochem/physiol Actions

Margatoxin is an α-KTx toxin, which is majorly used in ion channel research.[1] It is a 39-amino acid peptide, which is a specific K(V)1.3 channel voltage-dependent K+ channel blocker.[2] Margatoxin is an immunosuppressant that is isolated from the venom of the scorpion Centruroides margaritatus.[3]

Other Notes

Toxin in Centruroides margaritatus (scorpion)

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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Certificates of Analysis (COA)

Lot/Batch Number
SLBS9644
SLBS5100
SLBM5541V
SLBL5376V
SLBL0672V

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H Ouadid-Ahidouch et al.
FEBS letters, 459(1), 15-21 (1999-10-06)
Voltage-dependent K(+) channels were identified and characterized in primary culture of rat prostate epithelial cells. A voltage-dependent, inactivating K(+) channel was the most commonly observed ion channel in both lateral and dorsal cells. The K(+) current exhibited a voltage threshold
M Garcia-Calvo et al.
The Journal of biological chemistry, 268(25), 18866-18874 (1993-09-05)
A novel peptidyl inhibitor of K+ channels has been purified to homogeneity from venom of the new world scorpion Centruroides margaritatus. The primary structure of this 39-amino-acid peptide, which we term margatoxin (MgTX), was determined by amino acid compositional analysis
Margatoxin is a non-selective inhibitor of human Kv1.3 K+ channels.
Bartok A
Toxicon, 87, 6-16 (2014)
Anna-Lena Unterweger et al.
Journal of Crohn's & colitis, 15(11), 1943-1958 (2021-04-24)
The potassium channel Kv1.3 is a potentially attractive therapeutic target in T cell-mediated inflammatory diseases, as the activity of antigen-activated T cells is selectively impeded by Kv1.3 inhibition. In this study, we examined Kv1.3 as a potential therapeutic intervention point
Gergely Toldi et al.
Immunobiology, 218(3), 311-316 (2012-06-19)
The transient increase of the cytoplasmic free calcium level plays a key role in the process of lymphocyte activation. Kv1.3 and IKCa1 potassium channels are important regulators of the maintenance of calcium influx during lymphocyte activation and present a possible
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