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A4665

Sigma-Aldrich

Alamethicin from Trichoderma viride

≥98% (HPLC)

Synonym(s):

Antibiotic U-22324

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About This Item

CAS Number:
27061-78-5
Beilstein:
5213858
MDL number:
MFCD00151517
UNSPSC Code:
12352209
PubChem Substance ID:
24890893
NACRES:
NA.77

Quality Level

300

Assay

≥98% (HPLC)

form

powder

antibiotic activity spectrum

Gram-positive bacteria

Mode of action

cell membrane | interferes

storage temp.

2-8°C

SMILES string

CC(C)C[C@H](NC(=O)CNC(=O)C(C)(C)NC(=O)[C@@H](NC(=O)C(C)(C)NC(=O)[C@H](CCC(N)=O)NC(=O)[C@H](C)NC(=O)C(C)(C)NC(=O)[C@H](C)NC(=O)C(C)(C)NC(=O)[C@@H]1CCCN1C(=O)C(C)(C)NC(C)=O)C(C)C)C(=O)NC(C)(C)C(=O)N2CCC[C@H]2C(=O)N[C@@H](C(C)C)C(=O)NC(C)(C)C(=O)NC(C)(C)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](CO)Cc3ccccc3

InChI

1S/C92H150N22O25/c1-47(2)43-58(72(127)108-92(24,25)84(139)113-41-29-33-59(113)73(128)103-65(48(3)4)75(130)111-90(20,21)82(137)112-89(18,19)80(135)102-56(37-40-64(120)121)70(125)101-55(35-38-61(93)117)69(124)98-54(46-115)44-53-31-27-26-28-32-53)99-63(119)45-95-77(132)85(10,11)110-76(131)66(49(5)6)104-81(136)88(16,17)107-71(126)57(36-39-62(94)118)100-67(122)50(7)96-78(133)86(12,13)106-68(123)51(8)97-79(134)87(14,15)109-74(129)60-34-30-42-114(60)83(138)91(22,23)105-52(9)116/h26-28,31-32,47-51,54-60,65-66,115H,29-30,33-46H2,1-25H3,(H2,93,117)(H2,94,118)(H,95,132)(H,96,133)(H,97,134)(H,98,124)(H,99,119)(H,100,122)(H,101,125)(H,102,135)(H,103,128)(H,104,136)(H,105,116)(H,106,123)(H,107,126)(H,108,127)(H,109,129)(H,110,131)(H,111,130)(H,112,137)(H,120,121)/t50-,51-,54+,55-,56-,57-,58-,59-,60-,65-,66-/m0/s1

InChI key

LGHSQOCGTJHDIL-SLKIUSOBSA-N

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General description

Alamethicin is an antibiotic and a cytolytic peptide capable of forming an amphipathic α-helical structure in biological membranes. It is a linear peptaibol, made up of 20 amino acid residues. It belongs to the class of Nonribosomal peptides (NRP) and is loaded with alpha-amino isobutyric acid.

Application

Alamethicin from Trichoderma viride has been used:
  • to examine the effect of glutamate transporters on the Na+/K+-ATPase dependent extracellular K+ transient during neuronal activity
  • to investigate the formation of anion-permeable channels in planar lipid bilayers by magainin I obtained from Xenopus skin
  • to study the permeability of root apical meristem and epidermis and cellulase induced resistance to Alamethicin in Arabidopsis thaliana
  • to study the cytotoxic effects of the phycotoxin okadaic acid and mycotoxins on human intestinal (HT-29) and neuroblastoma (SH-SY5Y) cell lines
  • to analyze the structural variations and biological activity of peptaibols obtained from the Longibrachiatum clade belonging to the genus of filamentous fungi Trichoderma

Biochem/physiol Actions

Alamethicin is responsible for eliciting resistance in plants and is harmful to them by causing lesions and rapid death associated with ribosomal ribonucleic acid (rRNA) cleavage. It can cause permeability of the apical meristem and epidermis in A. thaliana roots. Alamethicin leads to the coiling of tendrils in Bryonia dioica induced by jasmonates.

Quality

A mixture of alamethicin homologs

Sequence

Ac-2-MeAla-L-Pro-2-MeAla-L-Ala-2-MeAla-L-Ala-L-Glu(NH2)-2-MeAla-L-Val-2-MeAla-Gly-L-Leu-2-MeAla-L-Pro-L-Val-2-MeAla-2-MeAla-L-Glu-L-Glu(NH2)-phenylalaninol

Pictograms

Skull and crossbones
GHS06

Signal Word

Danger

Hazard Statements

H301

Hazard Classifications

Acute Tox. 3 Oral

Storage Class Code

6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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Burkhard Bechinger et al.
Chemistry and physics of lipids, 165(3), 282-301 (2012-03-01)
Solid-state NMR spectroscopic techniques provide valuable information about the structure, dynamics and topology of membrane-inserted polypeptides. In particular antimicrobial peptides (or 'host defence peptides') have early on been investigated by solid-state NMR spectroscopy and many technical innovations in this domain
Bradley R Dotson et al.
BMC plant biology, 18(1), 165-165 (2018-08-12)
Trichoderma fungi live in the soil rhizosphere and are beneficial for plant growth and pathogen resistance. Several species and strains are currently used worldwide in co-cultivation with crops as a biocontrol alternative to chemical pesticides even though little is known
Tamás Marik et al.
Frontiers in microbiology, 10, 1434-1434 (2019-07-12)
This study examined the structural diversity and bioactivity of peptaibol compounds produced by species from the phylogenetically separated Longibrachiatum Clade of the filamentous fungal genus Trichoderma, which contains several biotechnologically, agriculturally and clinically important species. HPLC-ESI-MS investigations of crude extracts
D P Tieleman et al.
Biophysical journal, 76(6), 3186-3191 (1999-06-04)
Alamethicin is an amphipathic alpha-helical peptide that forms ion channels. An early event in channel formation is believed to be the binding of alamethicin to the surface of a lipid bilayer. Molecular dynamics simulations are used to compare the structural
Daisuke Noshiro et al.
Bioconjugate chemistry, 24(2), 188-195 (2013-01-01)
Using native chemical ligation, we constructed a Ca(2+)-gated fusion channel protein consisting of alamethicin and the C-terminal domain of calmodulin. At pH 5.4 and in the absence of Ca(2+), this fusion protein yielded a burst-like channel current with no discrete
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