多肽修飾:
C-端標(biāo)記技術(shù):
o C端酰胺化(Amidation,C-termainal) o 醛基化(Aldehydes) o 醇基化(Alcohols) o pNA (p-Nitroanilide) o AMC o AFC o 巰基乙胺化(Cysteamide) o 酯基化(Ester) o ØN-烷基化(N-Alkyl Amides)
N-端標(biāo)記技術(shù):
o 乙酰化Acetylated (Acetylated) o Palmytolylo HYNIC o 生物素標(biāo)記(Biotinylated) o Br乙?;?/SPAN>Bromoacetylated) o 螯合反應(yīng)(DOTA,DTPA conjugated) o 甲醛化(Formylated) o 十四烷基,十八烷基化(Myristoylated) o 琥珀?;?、棕櫚酸化、蘋果酸化、脂肪酸化等(Succinylated)
熒光標(biāo)記修飾:
o C端修飾:AFC, AMC, Dap(Dnp), Lys(Dye), pNA, Rh110²
o N端修飾:Bodipy-FL, Cy3, Cy5, Texas Red, 5-Tamra, 5-lodoacetamido fluorescein
Rhodamine 110 and² Rhodamine B Luciferin, EDANS
FAM, FITC, MCA, Rox, Sulforhodamine 101,² Ø5-TAMRA
環(huán)化反應(yīng):
o 首尾成環(huán),中間成環(huán),特殊成環(huán)(N -> C or Head to Tail) o 2對(duì)二硫鍵,3對(duì)二硫鍵(Disulfide (S-S bond formation) .Trisulfide formation) o tr產(chǎn)物活性肽成環(huán)(Cyclic-natural peptides
甲基化:
o 側(cè)鏈甲基化Lys(For),Lys(Me), Lys(Me)2, Lys(Me)3, Arg(Me)2 symmetrical, D-Tyr(Me),D-Tyr(Et) o N端甲基化(N-Me-Arg,N-Me-Asp, N-Me-Glu, N-Me-Leu, N-Me-Nle, N-Me-Nva, N-Me-Phe, N-Me-S N-Me-Ser, N-Me-Trp, N-Me-Thr, N-Me-Val)
幾種常見的特殊修飾:
o 各種偶聯(lián)(BSA, KLH conjugated peptides for antibody production ) o 磷酸化(Phosphoserine, Phosphothreonine, Phosphotyrosine) o 磺化(Sulfated Tyrosine or Serine)o MAPS (Multiple Antigenic Peptide) o 糖肽(Glycopeptides) o PEG修飾(PEGylation)