Ubiquitin is a 76 amino acid highly conserved eukaryotic polypeptide that selectively marks cellular proteins for proteolytic degradation by the 26S proteasome. The process of target selection, covalent attachment and shuttle to the 26S proteasome is a vital means of regulating the concentrations of key regulatory proteins in the cell by limiting their lifespans. Polyubiquitination is a common feature of this modification. Serial steps for modification include the activation of ubiquitin, an ATP-dependent formation of a thioester bond between ubiquitin and the enzyme E1, transfer by transacylation of ubiquitin from E1 to the ubiquitin conjugating enzyme E2, and covalent linkage to the target protein directly by E2 or via E3 ligase enzyme. Deubiquitination enzymes also exist to reverse the marking of protein substrates. Posttranslational tagging by Ub is involved in a multitude of cellular processes, including the cell cycle, cell growth and differentiation, embryogenesis, apoptosis, signal transduction, DNA repair, regulation of transcription and DNA replication, transmembrane transport, stress responses, the immune response, and nervous system functions.

Target	TPTEa
Reactivity	Human
Host	Rabbit
Clonality	Polyclonal
Tested Applications	WB, IHC
Recommended dilutions	Optimal dilutions/concentrations should be determined by the end user.
Immunogen	KLH-conjugated synthetic peptide between 42-74 amino acids from the N-terminal region of human TPTEa.
Purification	Purified through a protein A column, followed by peptide affinity purification.
Isotype	IgG
Conjugation	Unconjugated
Storage	Aliquot and store at -20°C. Avoid repeated freeze/thaw cycles.
Swiss Prot	P56180
Buffer	PBS containing 0.09% sodium azide.
UNSPSC Code	12352203
Availability	Shipped within 5-10 working days.
Note	This product is for research use only.