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P9386

Sigma-Aldrich

Poly-L-histidine

mol wt 5,000-25,000

Synonym(s):

L-Histidine homopolymer

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About This Item

CAS Number:
26062-48-6
MDL number:
MFCD00166382
UNSPSC Code:
12352209
PubChem Substance ID:
24899031
NACRES:
NA.26

form

powder or solid

mol wt

5,000-25,000

color

white to light yellow

application(s)

cell analysis

storage temp.

−20°C

InChI

1S/C6H9N3O2/c7-5(6(10)11)1-4-2-8-3-9-4/h2-3,5H,1,7H2,(H,8,9)(H,10,11)/t5-/m0/s1

InChI key

HNDVDQJCIGZPNO-YFKPBYRVSA-N

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General description

Poly-L-histidine is an amphoteric compound. The imidazole ring in its structure enables protonation−deprotonation.

Application

Poly-L-histidine has been used:
  • as a polycation for the dispersion of multi-wall carbon nanotubes (MWCNTs)
  • as a polyionic compound to investigate its ability to rupture extracellular enveloped virus membrane
  • in screening its anti-prion activity in cell based and in vivo anti-prion assay

Biochem/physiol Actions

Poly-L-histidine (Phis) copolymers are biocompatible, pH responsive and are less toxic. It exhibits endolysosomal escape funcationality. The copolymer of Phis with poly(ethylene glycol)−poly(d,l-lactide) (PEG-PLA) is effective in delivering doxorubicin. pH sensitive poly(l-histidine) copolymer micelles have application in delivering anticancer drugs in acidic microenvironment.

Analysis Note

Molecular weight by MALLS.

Other Notes

For additional technical information on polyamino acids please visit the Polyamino acid FAQ resource.

Storage Class Code

11 - Combustible Solids

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)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Yi-Fang Zeng et al.
Biomaterials, 33(36), 9239-9245 (2012-10-03)
Loading of viral vectors in synthetic polymers is a promising strategy for overcoming hurdles associated with viral gene delivery. For enhanced gene expression at a specific site, gene transfer by using hydrogels represents a versatile approach. In this study, adeno-associated
Yuehua Cong et al.
Bioconjugate chemistry, 23(2), 248-263 (2012-01-17)
The efficacy of protein-based medicines can be compromised by their rapid clearance from the blood circulatory system. Achieving optimal pharmacokinetics is a key requirement for the successful development of safe protein-based medicines. Protein PEGylation is a clinically proven strategy to
Hongbo Zhang et al.
Drug metabolism and disposition: the biological fate of chemicals, 40(10), 1935-1944 (2012-07-12)
Many laboratories use recombinant UDP-glucuronosyltransferases (UGTs), expressed in baculovirus-infected insect cells, for drug glucuronidation studies. We have infected Sf9 insect cells with increasing amounts of recombinant baculovirus, encoding either UGT1A9 or UGT2B7, and measured both glucuronidation activity and immunodetectable UGT
Electrochemical determination of ascorbic acid and paracetamol in pharmaceutical formulations using a glassy carbon electrode modified with multi-wall carbon nanotubes dispersed in polyhistidine
Dalmasso PR, et al.
Sensors and Actuators B, Chemical, 173(5), 732-736 (2012)
Masaharu Kondo et al.
Biomacromolecules, 13(2), 432-438 (2012-01-14)
A polyhistidine (His) tag was fused to the C- or N-terminus of the light-harvesting (LH1)-α chain of the photosynthetic antenna core complex (LH1-RC) from Rhodobacter sphaeroides to allow immobilization of the complex on a solid substrate with defined orientation. His-tagged
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