A 40-residue amyloid-β protein fragment
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Amyloid-β (1-40) Peptide (human) (trifluoroacetate salt)

Item No. 21617

Product Insert (PDF)Safety Data Sheet (SDS) (PDF)
Technical Information
Formal Name
L-α-aspartyl-L-alanyl-L-α-glutamyl-L-phenylalanyl-L-arginyl-L-histidyl-L-α-aspartyl-L-serylglycyl-L-tyrosyl-L-α-glutamyl-L-valyl-L-histidyl-L-histidyl-L-glutaminyl-L-lysyl-L-leucyl-L-valyl-L-phenylalanyl-L-phenylalanyl-L-alanyl-L-α-glutamyl-L-α-aspartyl-L-valylglycyl-L-seryl-L-asparaginyl-L-lysylglycyl-L-alanyl-L-isoleucyl-L-isoleucylglycyl-L-leucyl-L-methionyl-L-valylglycylglycyl-L-valyl-L-valine, trifluoroacetate salt
Synonyms
  • Aβ (1-40)
  • Aβ40
Molecular Formula
C194H295N53O58S • XCF3COOH
Formula Weight
4329.8
Purity
≥95%
Formulation (Request formulation change)
A crystalline solid
Solubility(Learn about Variance in Solubility)
DMSO: 2 mg/mlDMSO:PBS (pH 7.2) (1:3): 0.25 mg/ml
SMILES
[H]N[C@H](C(N[C@H](C(N[C@@H](CCC(O)=O)C(N[C@H](C(N[C@@H](CCCNC(N)=N)C(N[C@H](C(N[C@H](C(N[C@@H](CO)C(NCC(N[C@H](C(N[C@@H](CCC(O)=O)C(N[C@@H](C(C)C)C(N[C@H](C(N[C@H](C(N[C@@H](CCC(N)=O)C(N[C@@H](CCCCN)C(N[C@@H](CC(C)C)C(N[C@@H](C(C)C)C(N[C@H](C(N[C@H](C(N[C@H](C(N[C@@H](CCC(O)=O)C(N[C@H](C(N[C@@H](C(C)C)C(NCC(N[C@@H](CO)C(N[C@@H](CC(N)=O)C(N[C@@H](CCCCN)C(NCC(N[C@H](C(N[C@]([C@H](CC)C)([H])C(N[C@]([C@H](CC)C)([H])C(NCC(N[C@@H](CC(C)C)C(N[C@H](C(N[C@@H](C(C)C)C(NCC(NCC(N[C@@H](C(C)C)C(N[C@@H](C(C)C)C(O)=O)=O)=O)=O)=O)=O)CCSC)=O)=O)=O)=O)=O)C)=O)=O)=O)=O)=O)=O)=O)CC(O)=O)=O)=O)C)=O)CC1=CC=CC=C1)=O)CC2=CC=CC=C2)=O)=O)=O)=O)=O)CC3=CN=CN3)=O)CC4=CN=CN4)=O)=O)=O)CC5=CC=C(O)C=C5)=O)=O)=O)CC(O)=O)=O)CC6=CN=CN6)=O)=O)CC7=CC=CC=C7)=O)=O)C)=O)CC(O)=O.FC(F)(C(O)=O)F
InChi Code
InChI=1S/C194H295N53O58S.C2HF3O2/c1-25-102(19)158(188(299)211-87-143(256)218-124(67-94(3)4)174(285)228-123(62-66-306-24)172(283)241-152(96(7)8)186(297)209-83-140(253)206-84-145(258)240-154(98(11)12)191(302)245-157(101(17)18)193(304)305)247-192(303)159(103(20)26-2)246-162(273)104(21)215-141(254)85-207-164(275)116(47-36-38-63-195)223-181(292)133(77-139(199)252)234-185(296)137(90-249)220-144(257)88-210-187(298)153(97(9)10)242-184(295)135(79-151(269)270)235-170(281)121(56-60-147(261)262)222-161(272)106(23)217-173(284)127(69-107-41-30-27-31-42-107)231-177(288)129(71-109-45-34-29-35-46-109)237-189(300)156(100(15)16)244-183(294)125(68-95(5)6)229-166(277)117(48-37-39-64-196)224-168(279)119(54-58-138(198)251)226-178(289)130(73-111-80-202-91-212-111)233-180(291)132(75-113-82-204-93-214-113)238-190(301)155(99(13)14)243-171(282)122(57-61-148(263)264)227-175(286)126(72-110-50-52-114(250)53-51-110)219-142(255)86-208-165(276)136(89-248)239-182(293)134(78-150(267)268)236-179(290)131(74-112-81-203-92-213-112)232-167(278)118(49-40-65-205-194(200)201)225-176(287)128(70-108-43-32-28-33-44-108)230-169(280)120(55-59-146(259)260)221-160(271)105(22)216-163(274)115(197)76-149(265)266;3-2(4,5)1(6)7/h27-35,41-46,50-53,80-82,91-106,115-137,152-159,248-250H,25-26,36-40,47-49,54-79,83-90,195-197H2,1-24H3,(H2,198,251)(H2,199,252)(H,202,212)(H,203,213)(H,204,214)(H,206,253)(H,207,275)(H,208,276)(H,209,297)(H,210,298)(H,211,299)(H,215,254)(H,216,274)(H,217,284)(H,218,256)(H,219,255)(H,220,257)(H,221,271)(H,222,272)(H,223,292)(H,224,279)(H,225,287)(H,226,289)(H,227,286)(H,228,285)(H,229,277)(H,230,280)(H,231,288)(H,232,278)(H,233,291)(H,234,296)(H,235,281)(H,236,290)(H,237,300)(H,238,301)(H,239,293)(H,240,258)(H,241,283)(H,242,295)(H,243,282)(H,244,294)(H,245,302)(H,246,273)(H,247,303)(H,259,260)(H,261,262)(H,263,264)(H,265,266)(H,267,268)(H,269,270)(H,304,305)(H4,200,201,205);(H,6,7)/t102-,103-,104-,105-,106-,115-,116-,117-,118-,119-,120-,121-,122-,123-,124-,125-,126-,127-,128-,129-,130-,131-,132-,
InChi Key
VPJYVRGOYHEUMW-XGMOOXFWSA-N
Shipping & Storage Information
Storage
-20°C
Shipping
Room temperature in continental US; may vary elsewhere
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    Product Description

    Amyloid-β (1-40) (Aβ40) peptide is a 40-residue protein fragment of Aβ42 (Item No. 20574), a neurotoxic peptide found in amyloid plaques in postmortem cerebral cortex from patients with Alzheimer's disease.1,2 Aβ40 is more abundant, less neurotoxic, and does not form oligomers as easily as Aβ42.3,4 Aβ40 inhibits in vitro fibrillization of Aβ42 in a concentration-dependent manner.5 It also inhibits Aβ42-induced cell death in cultured rat embryonic cortical neurons in a concentration-dependent manner. Aβ40 prevents Aβ42-induced increases in the number of GFAP-positive astrocytes in rat entorhinal cortex.

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    References & Product Citations
    Product Description References

    1. Wolfe, M.S. Therapeutic strategies for Alzheimer’s disease. Nat. Rev. Drug Discov. 1(11), 859-866 (2002).

    2. Iwatsubo, T., Odaka, A., Suzuki, N., et al. Visualization of Aβ42(43) and Aβ40 in senile plaques with end-specific Aβ monoclonals: Evidence that an initially deposited species is Aβ42(43). Neuron 13(1), 45-53 (1994).

    3. Bitan, G., Kirkitadze, M.D., Lomakin, A., et al. Amyloid β-protein (Aβ) assembly: Aβ40 and Aβ42 oligomerize through distinct pathways. Proc. Natl. Acad. Sci. USA 100(1), 330-335 (2003).

    4. Murphy, M.P., and LeVine, H., III Alzheimer’s disease and the β-amyloid peptide. J. Alzheim. Dis. 19(1), 311 (2010).

    5. Zou, K., Kim, D., Kakio, A., et al. Amyloid β-protein (Aβ)1-40 protects neurons from damage induced by Aβ1-42 in culture and in rat brain. J. Neurochem. 87(3), 609-619 (2003).