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Peptidmodifikationen

Non-standard residues

Non-standard residues
Aminoisobutyric acid, [aib]
Azido-Lysin, [K-n3] **)
Beta aspartic acid, [beta D]
Beta homo amino acids, [beta homo-aa]
Beta-alanine, [beta A]
Citrullin, [cit]
Cyclohexylalanine, [cha]
D amino-acids, [d-aa]
Dihydroxyphenylalanine, [dopa]
Epsilon lysine, [epsilon K]
Fluoro-, chloro-, bromo phenylalanine, [x-F]
Fluoro-, chloro-, bromo tyrosine, [x-Y]
Gamma glutamic acid [gamma E]

Hydroxyproline, [hyp]
K-Biotin , Lys-Ne-Biotin
Methyl-, acetyl-lysine [meK], [acK]
N-methyl amino-acids, [N-Me-aa]
Norleucine, [nle]
Pencillinamine, [pen]
Phosphorylation [pS], [pT], [pY]



**) Azides of amino acids can be labeled with terminal Alkyne or strained Alkyne (e.g. DBCO)-tagged reporter molecules via a Cu(I)-catalyzed Alkyne-Azide (CUAAC) or Cu(I)-free strain-promoted Alkyne-Azide Click Chemistry (SPAAC) reaction, respectively.

Heavy isotope (13C, 15N) labeled amino-acids

Heavy isotope (13C, 15N) labeled amino-acids
13C15N-K
13C15N-R
13C15N-A
13C15N-I
13C15N-L
13C15N-F
13C15N-P
13C15N-V


Methyl amino acids
{Lys(Me)}
{Lys(Me2)}
{Lys(Me3)}
N-Methyl amino acid
{N-Me-Ala}
{N-Me-Phe}
{N-Me-Leu}
{N-Me-Ile}
{N-Me-Val}
{N-Me-Met}
{N-Me-Nle}
{N-Me-Nva}
{Sar}
{N-Me-Ser}
{N-Me-Tyr}
{N-Me-Thr}
{N-Me-Asp}
{N-Me-Glu}
N-Me-beta-Ala

N- and C-terminal modifications

N-terminal modification
Acetyl, formyl, [ac], [for]
Aminooxyacetyl, [aoa]
Azide, [N3]
Pyroglutamate, [pyr]
S-acetylthioacetate, [sata]
Succinyl, [suc]

C-terminal modification
Amide, [NH2]
Alkylester, [COOMe], [COOEt]
Cysteamide, [cya]
Ethylenediamine, [ed]
Hydroxysucinimide ester, [Osu]
N-methylamide, [NHMe]

IgG antibodies conjugation: IgG-FITC, IgG-HRP, IgG-Biotin

Internal & terminal Spacer
C6 spacer
Chemical name is: 6-aminohexanoic acid NH2-(CH2)5-COOH
Synonym: AHX.

N-terminal fatty acids conjugation

N-terminal fatty acids conjugation / cosmetic peptides
Myristic acid, [myr] , cosmetic grade
Palmitic acid, [palm] , cosmetic grade
Stearic acid, [stea]
Oleic acid, [ole]
Linoleic acid, [lin]

Protein carrier conjugation
KLH, BSA, OVA


Internal & terminal Spacer
C6 spacer
Chemical name is: 6-aminohexanoic acid NH2-(CH2)5-COOH
Synonym: AHX.

Cyclization

Cyclization
Disulfide bridge (s)
Head to tail lactam
Internal lactam, lactone
Thiolactone

Fluorescent labeles

Fluorescent dyes
EDANS, C-terminal [edans]
EDANS-Glu, N-terminal, internal
Fluorescein, N-terminal, [fl]
Fluorescein-Lys, C-terminal, internal, [K-fl]
Methoxycoumarin acetic acid, N-terminal, [mca]
Methoxycoumarin acetic acid-Lys, C-terminal, internal, [K-mca]
p-Nitroaniline, C-terminal, [pNA]
Tetramethylrhodamine, N-terminal, [tmr]
Tetramethylrhodamine-Lys, C-terminal, internal, [K-tmr]

Synthetic Substrates / DONOR - QUENCHER

N-Dabcyl -(Sequence)-(E-Edans)-amide
aka N-Dabcyl -(Sequence)-(Glu-Edans)-amide

FRET Peptide

Fluorophore Quencher
FAM Dabcyl
Trp Dnp
Abz Dnp
Mca Dnp
EDANS Dabcyl

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