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*For Non-Clinical Research Use Only*
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EA2  |
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| Full Name |
EA2 |
Sequence
(one-letter code) |
PTTDSTTPAPTTK |
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Sequence
(three-letter code) |
{Pro}{Thr}{Thr}{Asp}{Ser}{Thr}{Thr}{Pro}{Ala}{Pro}{Thr}{Thr}{Lys} |
| Description |
There is a ninth member of the mammalian UDP-GalNAc:polypeptide N-acetylgalactosaminyltransferase (ppGaNTase) family, termed ppGaNTase-T9. This enzyme is expressed in a broadly distributed manner across many adult tissues. Significant levels of 5- and 4.2-kilobase transcripts were found in rat sublingual gland, testis, small intestine, colon, and ovary, with lesser amounts in heart, brain, spleen, lung, stomach, cervix, and uterus. In situ hybridization to mouse embryos (embryonic day 14.5) revealed significant hybridization in the developing mandible, maxilla, intestine, and mesencephalic ventricle. Constructs expressing this gene transiently in COS7 cells resulted in no detectable transferase activity in vitro against a panel of unmodified peptides, including MUC5AC (GTTPSPVPTTSTTSAP) and EA2 (PTTDSTTPAPTTK).However, when incubated with MUC5AC and EA2 glycopeptides (obtained by the prior action of ppGaNTase-T1), additional incorporation of GalNAc was achieved, resulting in new hydroxyamino acid modification. The activity of this glycopeptide transferase is distinguished from that of ppGaNTase-T7 in that it forms a tetra-glycopeptide species from the MUC5AC tri-glycopeptide substrate, whereas ppGaNTase-T7 forms a hexa-glycopeptide species. |
| Notes |
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1 |
Peptide Services: GenScript's peptide synthesis services include standard chemical peptide synthesis, peptide modification, peptide libraries, and recombinant peptide expression.
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2 |
Standard Peptide Synthesis: GenScript offers quality peptides at the most competitive prices in the industry, starting at $3.20 per amino acid. GenScript FlexPeptideTM technology can synthesize peptide as long as 200 amino acids, a world record for such technology.
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3 |
Peptide Modifications: GenScript offers a wide range of peptide modification services including isotope labeling (2H, 15N, and 13C), multiple disulfide bonds, multiple phosphorylations, KLH, BSA, ovalbumin, amidation, acetylation, biotin, FITC, etc.
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4 |
Peptide Libraries: GenScript has developed a rapid high-throughput parallel peptide synthesis platform, providing custom libraries of unbound peptides of 5-20 mer at very competitive prices.
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Document-HPLC: 10199_20090714060300.PDF (PDF)