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C1796

Sigma-Aldrich

Cecropin B

≥97% (HPLC), powder

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Empirical Formula (Hill Notation):
C176H301N51O42S
CAS Number:
Molecular Weight:
3835.65
MDL number:
NACRES:
NA.32

Quality Level

assay

≥97% (HPLC)

form

powder

antibiotic activity spectrum

fungi

mode of action

cell membrane | interferes

storage temp.

−20°C

InChI

1S/C176H302N52O41S/c1-25-97(15)140(174(269)224-139(96(13)14)168(263)212-113(57-36-43-72-179)155(250)199-101(19)145(240)198-91-134(234)228-79-50-64-128(228)167(262)202-104(22)149(244)225-141(98(16)26-2)171(266)203-105(23)148(243)222-137(94(9)10)169(264)219-123(82-93(7)8)152(247)196-89-132(232)205-119(65-67-135(235)236)156(251)201-102(20)146(241)206-112(56-35-42-71-178)154(249)200-103(21)147(242)215-122(144(187)239)81-92(5)6)221-133(233)90-197-153(248)126(85-129(185)229)217-160(255)118(63-49-78-193-176(190)191)213-172(267)143(100(18)28-4)227-166(261)127(86-130(186)230)218-157(252)111(62-48-77-192-175(188)189)204-131(231)88-195-151(246)121(69-80-270-24)211-159(254)114(58-37-44-73-180)207-161(256)120(66-68-136(237)238)214-173(268)142(99(17)27-3)226-163(258)117(61-40-47-76-183)208-158(253)115(59-38-45-74-181)209-164(259)124(83-106-51-30-29-31-52-106)220-170(265)138(95(11)12)223-162(257)116(60-39-46-75-182)210-165(260)125(216-150(245)109(184)54-34-41-70-177)84-107-87-194-110-55-33-32-53-108(107)110/h29-33,51-53,55,87,92-105,109,111-128,137-143,194H,25-28,34-50,54,56-86,88-91,177-184H2,1-24H3,(H2,185,229)(H2,186,230)(H2,187,239)(H,195,246)(H,196,247)(H,197,248)(H,198,240)(H,199,250)(H,200,249)(H,201,251)(H,202,262)(H,203,266)(H,204,231)(H,205,232)(H,206,241)(H,207,256)(H,208,253)(H,209,259)(H,210,260)(H,211,254)(H,212,263)(H,213,267)(H,214,268)(H,215,242)(H,216,245)(H,217,255)(H,218,252)(H,219,264)(H,220,265)(H,221,233)(H,222,243)(H,223,257)(H,224,269)(H,225,244)(H,226,258)(H,227,261)(H,235,236)(H,237,238)(H4,188,189,192)(H4,190,191,193)/t97-,98-,99-,100-,101-,102-,103-,104-,105-,109-,111-,112-,113-,114-,115-,116-,117-,118-,119-,120-,121-,122-,123-,124-,125-,126-,127-,128-,137-,138-,139-,140-,141-,142-,143-/m0/s1

InChI key

YIQHNFUJWYYSEC-MQAAYMCRSA-N

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This Item
C7927C6830P1004
Sigma-Aldrich

C1796

Cecropin B

Cecropin P1 Porcine ≥95% (HPLC), powder

C7927

Cecropin P1 Porcine

Sigma-Aldrich

C6830

Cecropin A

Polymyxin B sulfate salt

P1004

Polymyxin B sulfate salt

mode of action

cell membrane | interferes

mode of action

cell membrane | interferes

mode of action

cell membrane | interferes

mode of action

cell membrane | interferes

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

200

assay

≥97% (HPLC)

assay

≥95% (HPLC)

assay

≥97% (HPLC)

assay

-

form

powder

form

powder

form

powder

form

powder

storage temp.

−20°C

storage temp.

−20°C

storage temp.

−20°C

storage temp.

2-8°C

Amino Acid Sequence

Lys-Trp-Lys-Val-Phe-Lys-Lys-Ile-Glu-Lys-Met-Gly-Arg-Asn-Ile-Arg-Asn-Gly-Ile-Val-Lys-Ala-Gly-Pro-Ala-Ile-Ala-Val-Leu-Gly-Glu-Ala-Lys-Ala-Leu-NH2

General description

Cecropin B is an antimicrobial peptide present in the hemolymph of the silk moth, Hyalophora cecropia. It is a member of the Cecropin class and possesses an α-helix-like structure. 
Chemical structure: peptide

application

Cecropin B has been used as an antibiotic peptide to study its cytotoxic potential in breast adenocarcinoma and mesothelioma cell lines. It has also been used as an antimicrobial peptide to test the susceptibility of the Photorhabdus variants in minimal inhibitory concentration (MIC) assays.

Biochem/physiol Actions

Antibacterial peptide originally identified in moths (Hyalophora cecropia) and later in pig intestine.
Cecropin B is known for its antimicrobial activity. It displays antitumor effects in hepatocellular carcinoma, lymphoma, and leukemia cell lines.

Other Notes

Lyophilized from 0.1% TFA in H2O

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)


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Zhongyuan Liu et al.
Acta crystallographica. Section F, Structural biology and crystallization communications, 66(Pt 7), 851-853 (2010-07-08)
Cecropin B is a 37-residue cationic antimicrobial peptide derived from the haemolymph of Bombyx mori. The precise mechanism by which cecropins exert their antimicrobial and cytolytic activities is not well understood. Crystals of cecropin B were obtained by the hanging-drop
P Peter Chiou et al.
Developmental and comparative immunology, 30(9), 797-806 (2005-12-15)
There are increasing evidence of the potential role of antimicrobial peptides in the regulation of immune responses in mammalian species. However, the effects of these peptides in fish have yet to be investigated. In this study, we examined the transcriptional
Yu-qing Hao et al.
Chinese medical journal, 118(2), 155-160 (2005-01-26)
Cecropin-XJ belongs to cecropin-B, which is the most potent antibacterial peptide found naturally. The aim of this study was to investigate the effects of cecropin-XJ on growth and adherence of oral cariogenic bacteria. Four oral cariogenic bacteria (Streptococcus mutans, Lactobacillus
Ju Hyeong Jeon et al.
Biomaterials, 29(26), 3591-3598 (2008-06-03)
Regeneration of bone is driven by the action of numerous biomolecules. However, most osteobiologic devices mainly depend on delivery of a single molecule. The present studies were directed at investigating a polymeric system that enables localized, alternating delivery of two
Morikazu Imamura et al.
Insect biochemistry and molecular biology, 36(5), 429-434 (2006-05-03)
To analyze cecropin B promoter (P-CecB) activity in vivo, we constructed transgenic silkworms that expressed EGFP under the control of P-CecB using the piggyBac transposable element. Genomic Southern blot analysis of the G1 and G2 generations indicated the stable insertion

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