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L2913

Leptomycin B

from Streptomyces sp., ≥95% (HPLC), solution, nuclear transport inhibitor

别名:

Antibiotic CI 940, Elactocin, LMB, Mantuamycin

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关于此项目

经验公式（希尔记法）:
C33H48O6
化学文摘社编号:
87081-35-4
分子量:
540.73
UNSPSC Code:
12352200
PubChem Substance ID:
24896330
NACRES:
NA.77
MDL number:
MFCD06795848
Assay:
≥95% (HPLC)
Quality level:
300
Storage condition:
protect from light
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产品名称

来普霉素B 溶液 来源于链霉菌 属, ≥95% (HPLC), Supplied in methanol: water (7:3)

Quality Level

300

assay

≥95% (HPLC)

storage condition

protect from light

antibiotic activity spectrum

fungi

mode of action

protein synthesis | interferes

shipped in

dry ice

storage temp.

−20°C

SMILES string

CCC(\C=C\[C@@H]1OC(=O)C=C[C@@H]1C)=C\[C@H](C)C\C=C\C(C)=C\[C@@H](C)C(=O)[C@@H](C)[C@H](O)[C@@H](C)C\C(C)=C\C(O)=O

InChI

1S/C33H48O6/c1-9-28(14-15-29-24(5)13-16-31(36)39-29)19-22(3)12-10-11-21(2)17-25(6)32(37)27(8)33(38)26(7)18-23(4)20-30(34)35/h10-11,13-17,19-20,22,24-27,29,33,38H,9,12,18H2,1-8H3,(H,34,35)/b11-10+,15-14+,21-17+,23-20+,28-19-/t22-,24+,25-,26+,27-,29+,33-/m1/s1

InChI key

YACHGFWEQXFSBS-XYERBDPFSA-N

General description

Leptomycin B is an anti-fungal antibiotic, anti-tumor cytotoxin that inhibits CRM1-dependent, NES-dependent nucleo-cytoplasmic translocation (nuclear export inhibitor). NES containing proteins include HIV-1 REV; actin, c-Abl, cyclin B1, MDM2/p53, I?B, MPF, PKA and MEK.

Biochem/physiol Actions

Leptomycin B is an unsaturated, branched-chain fatty acid, and is an important tool in the study of nuclear export. Leptomycin B is a specific inhibitor of proteins containing nuclear export signal. Leptomycin B inhibits nucleo-cytoplasmic translocation of molecules such as the HIV-1 Rev protein and Rev-dependent export of mRNA. The addition of very small amounts to fibroblasts causes accumulation of MEK in the nucleus. Other proteins that are influenced by leptomycin B are actin, c-Abl, cyclin B1, MDM2/p53, IκB, MPF, and PKA. The suggested inhibition mechanism involves the direct binding of leptomycin B to CRM1, which blocks the binding of CRM1 to proteins containing the nuclear export signal, via the interaction with cysteine residue in CRM1 control conserved region.

Disclaimer

Supply conditions do not apply to the regions and states of Brazil: North, Northeast, Mato Grosso do Sul, Mato Grosso, and Rio Grande do Sul.

signalword

Danger

Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Flam. Liq. 2 - STOT SE 1

target_organs

Eyes

存储类别

3 - Flammable liquids

wgk

WGK 2

flash_point_f

64.4 °F - closed cup

flash_point_c

18 °C - closed cup

法规信息

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分析证书(COA)

Lot/Batch Number
0000548715
0000548715
0000453302
0000453302
0000433139

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K Nishi et al.
The Journal of biological chemistry, 269(9), 6320-6324 (1994-03-04)
The molecular action of leptomycin B (LMB), an agent inducing arrest of the eukaryotic cell cycle at G1 and G2 phases, was investigated by analyzing an LMB resistance gene of Schizosaccharomyces pombe. A genomic library of an LMB-resistant mutant was
M Fukuda et al.
Nature, 390(6657), 308-311 (1997-12-31)
The discovery of nuclear export signals (NESs) in a number of proteins revealed the occurrence of signal-dependent transport of proteins from the nucleus to the cytoplasm. Although the consensus motif of the NESs has been shown to be a leucine-rich
Daisuke Kaida et al.
Nature chemical biology, 3(9), 576-583 (2007-07-24)
The removal of intervening sequences from transcripts is catalyzed by the spliceosome, a multicomponent complex that assembles on the newly synthesized pre-mRNA. Pre-mRNA translation in the cytoplasm leads to the generation of aberrant proteins that are potentially harmful. Therefore, tight
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