Indolicidin

Indolicidin is a potent antimicrobial peptide purified from the cytoplasmic granules of bovine neutrophils.

Product information

CAS Number: 140896-21-5

Molecular Weight: 1906.28

Formula: C100H132N26O13

Chemical Name: (2S)-6-amino-2-[(2S)-2-{[(2S)-1-[(2S)-2-[(2S,3S)-2-amino-3-methylpentanamido]-4-methylpentanoyl]pyrrolidin-2-yl]formamido}-3-(1H-indol-3-yl)propanamido]-N-[(2S)-1-[(2S)-2-{[(1S)-1-{[(2S)-1-[(2S)-2-{[(1S)-1-{[(1S)-4-carbamimidamido-1-{[(1S)-4-carbamimidamido-1-carbamoylbutyl]carbamoyl}butyl]carbamoyl}-2-(1H-indol-3-yl)ethyl]carbamoyl}pyrrolidin-1-yl]-3-(1H-indol-3-yl)-1-oxopropan-2-yl]carbamoyl}-2-(1H-indol-3-yl)ethyl]carbamoyl}pyrrolidin-1-yl]-3-(1H-indol-3-yl)-1-oxopropan-2-yl]hexanamide

Smiles: CC(C)C[C@H](NC(=O)[C@@H](N)[C@@H](C)CC)C(=O)N1CCC[C@H]1C(=O)N[C@@H](CC1=CNC2=CC=CC=C12)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CC1=CNC2=CC=CC=C12)C(=O)N1CCC[C@H]1C(=O)N[C@@H](CC1=CNC2=CC=CC=C12)C(=O)N[C@@H](CC1=CNC2=CC=CC=C12)C(=O)N1CCC[C@H]1C(=O)N[C@@H](CC1=CNC2=CC=CC=C12)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CCCNC(N)=N)C(N)=O

InChiKey: USSYUMHVHQSYNA-SLDJZXPVSA-N

InChi: InChI=1S/C100H132N26O13/c1-5-57(4)85(102)95(136)123-79(45-56(2)3)96(137)124-42-20-36-82(124)92(133)118-76(46-58-51-110-68-28-11-6-23-63(58)68)89(130)116-74(33-16-17-39-101)88(129)121-80(49-61-54-113-71-31-14-9-26-66(61)71)97(138)125-43-21-38-84(125)94(135)120-78(48-60-53-112-70-30-13-8-25-65(60)70)91(132)122-81(50-62-55-114-72-32-15-10-27-67(62)72)98(139)126-44-22-37-83(126)93(134)119-77(47-59-52-111-69-29-12-7-24-64(59)69)90(131)117-75(35-19-41-109-100(106)107)87(128)115-73(86(103)127)34-18-40-108-99(104)105/h6-15,23-32,51-57,73-85,110-114H,5,16-22,33-50,101-102H2,1-4H3,(H2,103,127)(H,115,128)(H,116,130)(H,117,131)(H,118,133)(H,119,134)(H,120,135)(H,121,129)(H,122,132)(H,123,136)(H4,104,105,108)(H4,106,107,109)/t57-,73-,74-,75-,76-,77-,78-,79-,80-,81-,82-,83-,84-,85-/m0/s1

Technical Data

Appearance: Solid Power

Purity: ≥98% (or refer to the Certificate of Analysis)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis

Storage Condition: Dry, dark and -20 ^oC for 1 year or refer to the Certificate of Analysis.

Shelf Life: ≥12 months if stored properly.

Stock Solution Storage: 0 - 4 ^oC for 1 month or refer to the Certificate of Analysis.

Drug Formulation: To be determined

HS Tariff Code: 382200

How to use

In Vitro:

Indolicidin is comprised of 13 amino acids, 5 of which are tryptophan residues, and the carboxylterminal arginine is carboxamidated. Indolicidin has the highest tryptophan content of any known protein. The multiple tryptophan residues may play an important role in the function of this unique antibiotic peptide. Indolicidin is a tridecapeptide amide which possesses in vitro bactericidal activities comparable with the most active of the defensin or bactenecin peptides. Indolicidin binds purified surface lipopolysaccharide with high affinity and permeabilized the outer membrane of Escherichia coli to the small hydrophobic molecule 1-N-phenylnapthylamine (Mr 200), results consistent with indolicidin crossing the outer membrane via the self-promoted uptake pathway. The methyl esterification of indolicidin's carboxyl terminus increases its activity for Gram-negative and Gram-positive bacteria. In Gram-negative bacteria this is associated with an increased binding to lipopolysaccharide and increased permeabilization of the outer membrane. The cytoplasmic membrane is the site of action of indolicidin as assayed in Escherichia coli by the unmasking of cytoplasmic beta-galactosidase due to membrane permeabilization.

Products are for research use only. Not for human use.