Suchergebnisse für: "Poly amino acids"

Drug Delivery at Iris Biotech

Discover our products suitable for drug delivery including poly ethyleneglycols (PEGs), poly amino acids (PArg, PGlu, PLys, POR, PSar), poly(oxazoline)s, as well as fullerenes. Read on to find out more!

Workshop Polymer Therapeutics for Improved Drug Delivery

You missed our workshop featuring Prof. María Jesus Vicent Docón (Head of Polymer Therapeutics Lab)? Any further questions? Please get in contact via info@iris-biotech.de.

Special Offer – Summary Advent Calendar

See a summary of our advent calendar surprises and benefit from special discounts and great offers! Interested? Just click here to check-out all available products.

Let’s Talk Iris

You want to get an overview about the different Click technologies as well as available derivatives and applications? Let’s arrange a (virtual) talk by Iris Biotech about your topic of choice – Contact us!

PotM: Limited Offer - Polysarcosine Bundles

From beginning of May until end of July 2023 we offer special polysarcosine bundles each containing three functionalized PSars of different molecular weight (5 kDa, 10 kDa, 15 kDa), 100 mg each.

Comparison of Carriers for Polymer Therapeutics

The polymers in this context are a polymeric linear structures with n repeating units of monomers. Depending whether the polymer is consisting of one single molecular weight (only one n existing) or of a range of compounds with an average mass and a distribution of n around a mean value, polymers are referred to as “monodisperse” or “polydisperse”.

Click Chemistry Tools: Propargyl Amino Acids

Click chemistry is a convenient method to chemoselectively functionalize peptides at specific positions. We offer a variety of different propargyl amino acids for both Fmoc and Boc strategies, for enzymatic synthesis, as well as preloaded resins for SPPS.

Interested in polymers for the delivery of promising drug candidates, e.g. nucleic acids? Discover our selection of lipidated polyamino acids and custom capabilities. Read on to find out more!

Sarcosine Building Blocks

Interested in the introduction of Sarcosine (N-methylglycine), e.g. for hydrophilicity increase of your derivative of choice or for PEG replacement? Check-out our available Sarcosine building blocks!

Poly(Glutamic Acid) as Versatile Biodegradable Drug Carrier

Polyglutamates are well known to be highly biocompatible, biodegradable and multifunctional polymers, which have already been used as building blocks in polymer drug conjugates and polymeric micelles.

Pharmacological Effects of Polymer Therapeutics

Small drug molecules and also large biomolecules like proteins or antibodies suffer rapid clearance from human body.

Polymers Enlarge the Potential of Biopharmaceuticals

The Biopharmaceuticals market, estimated at US$ 200 billion globally in 2013 by reportbuyer.com (Biopharmaceuticals - A Global Market Overview, 2013, London), is further projected to reach US$ 500 billion by 2020, growing at 13.5 % CAGR between 2010 and 2020.

4-Azido-L-homoalanine

H-L-Aha-OH*HCl H-L-Dab(N3)-OH 4-Azido-L-homoalanine (S)-2-Amino-4-azidobutanoic acid hydrochloride Formula: C 4 H 8 N 4 O 2 *HCl Molecular Weight: 144,13*35,45 g/mole CAS: 942518-29-8 CODE: HAA5730 1g: EUR 200,- US$ 300,- 5g: ...

Amino Aldehydes

Aldehydes are between alcohols and carboxylic acids with respect to their oxidation level and show specific reactivity. Therefore they are highly interesting building blocks and intermediates for a large number of very interesting classes of reactions and compounds such as Wittig reaction, formation of secondary alcohols, heterocycles and semiaminals to name only a few.

Polylysines

Polylysines are polymers of the canonical amino acid Lysine, and are characterized by their high charge density caused by the presence of one free amino group per lysine monomer.

Poly(L-Glutamic Acid)

Poly-(α-L-glutamic acid) is a synthetic polypeptide of L-Glu linked by the alpha-amino groups (α-PGA). These polyanionic and biodegradable polymers can be used for a variety of purposes.

Diazirine Amino Acids for Photo Cross-Linkage in Living Cells

Iris Biotech introduces a comprehensive set of photo-crosslinking amino acids bearing the diazirine moiety.

Alkyne Amino Acids for Click Chemistry and other Conjugations:

Alkyne amino acids allow for Click conjugations and other types of chemistry. Read more about alkyne-functionalized amino acids and our related products.

α-Methyl and β,β-dimethyl amino acids

α-Methyl and alkyl-amino acids can be produced by a number of platforms, where the (2S,4S)-4-methyl-2-phenyloxazolidin-5-one scaffold is one of the most popular one.

Recombinant Incorporation of Amino Acids into Proteins

Mutant or modified aminoacyl tRNA synthetases (aaRS) have been used to charge non-natural amino acids to the corresponding tRNA, which incorporates them into polypeptides or proteins during recombinant synthesis.

Abstract: Ditrityl amino acids Trt-Lys(Trt)-OH (Trt = CPh3), Trt-Orn(Trt)-OH, Trt-Ser(Trt)-OH, and Trt-Hse(Trt)-OH were prepared and used in the synthesis of trityl-protected peptides, e.g., Trt-Ser(Trt)-Phe-NH2.

Fmoc-L-Cys(Palm)-OH – A S-palmitoylated Cysteine building block

Interested in studying the effect of palmitoylation on your peptide’s localization, function, and stability? Read on to find out more about the use of lipidated “fatty” amino acids!

Avoiding Racemization: Fmoc-Aaa-MPPAs as Alternatives for Wang Linker during SPPS

Compounds of the shown formula can simply be bound to solid supports via amide bond formation without racemization of the C-terminal amino acid and enable the synthesis of very pure peptides.

PotM: Seleno Amino Acids

Selenocysteine (Sec) plays a crucial role for various biological processes, and selenoproteins can be found in all lineages of life. Read on to discover the 21 st amino acid, its derivatives and applications.

PotM: About the Adamantyl Motif

Check out our growing portfolio on adamantyl-substituted amino acids and building blocks. At Iris Biotech, we are constantly striving to improve our services, our products, and the routes of synthesis.

Abraligabra - Reagents and Building Blocks for Chemical Ligation

We can’t get enough of new products and innovations! Read this blog to get detailed information on the cyanylating reagent NTCB as well as selenocysteine amino acids, both useful tools for peptide ligation.

Selective Lysine Labeling with Squaric Acid

Keeping control! PEGylating reagents with a squaric acid ethyl ester react chemoselectively with side chain amino functions of surface-accessible Lysines in proteins. Other functionalities are not affected.

New Statin Analogues: Super-Threonine Derivatives

A set of new statin analogues, so called Super-Threonines, is available consisting of Fmoc protected L-enantiomers with all possible 4 stereoisomers of chiral centers in the side chain. They appear in nature as bridge building element in cyclodepsipeptides, like pipecolidepsin A, a compound which shows relevant cytotoxic activity in three human tumor cell lines (lung, colon, breast) and has unique structural features.

Photo-Linker for Peptide Amides and Acids

Peptide linkers usually are cleaved under acidic conditions or using two-step procedures. Photocleavage proceeds under neutral conditions using UV light and can either be performed in batch or using flow chemistry.

Furyl-Alanine: A Novel Photo-Click Amino Acid

2-Furyl-alanine can be incorporated into peptides via SPPS or by using enzymatic approaches. UV-irradiation in the presence of oxygen and a photosensitizer converts furyl-alanine to an intermediate that selectively reacts with certain nucleophiles. This property can be employed for site-specific labeling of peptides and proteins.

New Iris Kits for the Synthesis of Peptoids and N-Alkylated Peptides

Peptides as pharmaceutical compounds suffer from unfavorable pharmacokinetics which is, among other things, due to a slow uptake into cells and rapid proteolytic cleavage. N -Alkylation of peptides is a valuable tool to overcome these limitations. We now offer new kits that enable the facile preparation of peptoids and N -alkylated peptides.

Polyarginine

Polyarginines are well known for their ability to enhance cell penetration.

beta,beta-Dimethyl Amino Acids

The use of bioactive peptides has increased over the recent years as they attracted attention for their use as therapeutic agents.

Noncanonical amino acids: Tools for biological and biophysical investigations

21 - 22 October 2019

Identification and Quantification of Maillard RPs

Find out which Maillard Reaction Products from Iris Biotech were used in the development of a state-of-the-art analytical method for 15 different AGEs.

New Collaboration with SciClix

Find out more about our partner SciClix from Singapore and our new collaboration!

Product Focus: TT-232, a Potent Somatostatin Analogue

Amongst various somatostatin analogues, the pentacyclic heptapeptide TT-232 bears unique properties. Iris Biotech offers TT-232 as triacetate and trifluoroacetate salt, respectively, as well as conjugated to either biotin or the fluorophore indocyanine green.

(Functionalized) Fullerenes of Versatile Value

Iris Biotech presents (functionalized) fullerenes of different core size (C60 vs. C70) as versatile tools for multiple functionalization. Read more about their unique properties and fields of applications.

Poly(Ethylene Glycol) – the Pioneer in Polymer Therapeutics

PEGs show a spectrum of unique physical and chemical properties, which have been described in literature extensively by the pioneers in PEGylation: Harris, Veronese and recently by Hermanson. Here are summarized the most common known properties.

Polysarcosine – a True Alternative to PEG

Potential alternatives to PEGs, polypeptoids in general and polysarcosine (PSR) in particular stand out in terms of safety, synthetic control and versatility.

Measures to Prevent Aspartimide Formation

Aspartimide formation remains one major hurdle during peptide synthesis. Read on to find out more about different strategies and available products at Iris Biotech in order to avoid this side product.

Hydrazone Resins as Alternative to SEA Resins

Discover the versatile applications of hydrazone resins e.g. for the preparation of peptide hydrazides, or the generation of peptide thio esters. Read on to find out more and see our available products.

Review – Product Highlights 2021

Herein, we summarize certain product highlights and innovations, which we presented in our newsletters 2021. Have a look and get in contact for more information or an individualized offer.

Fatty Acid Building Blocks

We are providing variously functionalized, protected and unprotected fatty acid derivatives suitable for SPPS and further conjugation, e.g. via Click chemistry. Read on to discover our portfolio.

Photoswitches

Photoswitches grant the ability to modulate the function of a molecule by effecting a structural change upon irradiation with UV light. Find out about our photoswitchable building blocks and their properties.

Resins for Solid Phase Peptide Synthesis (Part 2)

You want to get an overview about the various resins available at Iris Biotech as well as their specifications, differences, and applications? Read on for further information and details.

DTT and Spermidine for RNA Buffers and Vaccine Production

See how our “mRNA grade” DTT and Spermidine can support also your nucleic acid production. Read on for more information.

Review – Product Highlights 2022

Curious about our latest portfolio additions from July to December 2022 and the 2022’s overall product and newsletter highlights? Click here to check out the summary or get in contact for more details!

Temporary Activity Masking via Self-Immolative Linkage

(Bi)functional dioxoborolane and disulfide-based self-immolative linkers – mode of action and application examples for the detection of H 2 O 2 , for prodrug design, and reversible peptide cyclization.

PotM: Argpyrimidine Building Block for SPPS

Argpyrimidine is the result of a Maillard Reaction-like nonenzymatic posttranslational modification. You want to investigate the effect of this change on function and stability? Get the building block!

Amino-PEG-Acids

PEGs are being used as spacers, as hydrophilic decoration, and building blocks. Read on for more detailed information about the reactivity of different PEG derivatives and how to use them.

Fatty Di-Acids

Peptide therapeutics – fewer injections/lower doses by prolonging their half-life via addition of a lipid modification that promotes binding to serum proteins such as albumin. Read on for recent innovations!

CliCr® - a Reactive and Soluble Bioorthogonal Click Reagent

Building blocks with a strained triple bond do not require copper catalysis when used in click chemistry. Discover CliCr®: improved solubility in aqueous conditions and high reactivity! Click here!

Review – Product Highlights 2023 (Part 1)

Curious about our latest portfolio additions from January to June 2023? Discover our New Products Flyer and check out the summary of recent product highlights! Get in contact for more details!

Cell-Free Bioengineering & Linkerology®

Bioengineering in combination with Linkerology® . Check out the unique options for membrane proteins, recombinant immunotoxins (RITs) and novel antibody-drug conjugates.

Peptide Nucleic Acids as Stable DNA and RNA Analogs

One molecule, two identities: PNAs are composed of nucleobases arranged on a peptidic backbone. Discover our PNA building blocks as ready-to-use bases suitable for SPPS.

Automated Peptide Synthesis

The discovery of the Merrifield peptide synthesis paved the way for automated solid-phase peptide synthesis (SPPS) enabling fast and convenient simultaneous peptide synthesis.

Review – Product Highlights 2023

Curious about the highlights of our 2023 portfolio additions? Discover innovative building blocks and latest technologies! Read on to check out the summary or get in contact if you need more details!

A Tetrazole-Substituted Lysine as PTM Isostere

The tetrazole isostere of malonyllysine is thermally stable and does not suffer from decarboxylation. Discover our building blocks suitable for incorporation via solid-phase peptide synthesis.

Azobenzene Photoswitches

Engineer shape-shifting peptides , controllable by a laser as magic wand! In this newsletter, we’ll explore the possibilities of photo switchable building blocks based on azobenzene.

PotM: Oligomeric Sarcosine Building Blocks

You are looking for monodisperse Sarcosines ? You want to use Sarcosine for SPPS? You need to improve your drug's hydrophilicity and search for PEG alternatives? Read on!