aminopeptidase n

Expression system: E. coli
Length: 616-963, Partial
Activity: Not Tested

Aminopeptidase N CD13 Protein, Human, Recombinant (I603M, His) is expressed in HEK293 mammalian cells with His tag. The predicted molecular weight is 104.2 kDa and the accession number is A0A024RC61.

Aminopeptidase N CD13 Protein, Mouse, Recombinant (His) is expressed in HEK293 mammalian cells with His tag. The predicted molecular weight is 104 kDa and the accession number is P97449.

Expression system: E. coli
Length: 1-445, Full Length
Activity: Not Tested

Expression system: E. coli
Length: 198-498, Full Length of Mature Protein
Activity: Not Tested

Expression system: E. coli
Length: 1-507, Full Length
Activity: Not Tested

Expression system: E. coli
Length: 2-623, Full Length of Mature Protein
Activity: Not Tested

Expression system: E. coli
Length: 1-737, Full Length
Activity: Not Tested

Expression system: Baculovirus Insect Cells
Length: 44-335, Partial
Activity: Enzyme activity

Aminopeptidase P (APP) is a hydrolase specific for N-terminal imido bonds, which are common to several collagen degradation products, neuropeptides, vasoactive peptides, and cytokines. A membrane-bound and soluble form of this enzyme (XPNPEP2) have been identified as products of two separate genes. XPNPEP2, the X-linked gene that encodes membranous aminopeptidase P (APP), has been reported to associate with APP activity. The membrane aminopeptidase P (XPNPEP2) is largely limited in distribution to endothelia and brush border epithelia. APP and XPNPEP2 contain homologous blocks of sequence common to members of the pita bread-fold protein family, of which Escherichia coli methionine aminopeptidase is the prototype. The C-2399A variant in XPNPEP2 is associated with reduced APP activity and a higher incidence of AE-ACEi. XPNPEP2 mRNA was detected in fibroblasts that carry the translocation, suggesting that this gene at least partially escapes X inactivation. XPNPEP2 is a candidate gene for premature ovarian failure (POF).

LAP3 (Leucine Aminopeptidase 3) is a Protein Coding gene. 2 alternative initiation human isoforms have been reported. LAP3, belonging to the peptidase M17 family, has been proved to catalyze the hydrolysis of leucine residues. It catalyzes the removal of unsubstituted N-terminal amino acids from various peptides and is presumably involved in the processing and regular turnover of intracellular proteins. Leucine aminopeptidases are involved in many pathological disorders and regulate cell proliferation, invasion, and or angiogenesis of tumors. A recent study showed that LAP3 is highly expressed in several malignant and affects tumor angiogenesis. LAP3 is widely expressed in the appendix, lymph node, and other tissues. Diseases associated with LAP3 include Bacterial Vaginosis and Trichomoniasis.

The spike (S) glycoprotein of coronaviruses contains protrusions that will only bind to certain receptors on the host cell. Known receptors bind S1 are ACE2, angiotensin-converting enzyme 2; DPP4, dipeptidyl peptidase-4; APN, aminopeptidase N; CEACAM, carcinoembryonic antigen-related cell adhesion molecule 1; Sia, sialic acid; O-ac Sia, O-acetylated sialic acid. The spike is essential for both host specificity and viral infectivity. The term 'peplomer' is typically used to refer to a grouping of heterologous proteins on the virus surface that function together. The spike (S) glycoprotein of coronaviruses is known to be essential in the binding of the virus to the host cell at the advent of the infection process. It's been reported that SARS-CoV-2 (COVID-19 coronavirus, 2019-nCoV) can infect the human respiratory epithelial cells through interaction with the human ACE2 receptor. The spike protein is a large type I transmembrane protein containing two subunits, S1 and S2. S1 mainly contains a receptor binding domain (RBD), which is responsible for recognizing the cell surface receptor. S2 contains basic elements needed for the membrane fusion. The S protein plays key parts in the induction of neutralizing-antibody and T-cell responses, as well as protective immunity. The main functions for the Spike protein are summarized as: Mediate receptor binding and membrane fusion; Defines the range of the hosts and specificity of the virus; Main component to bind with the neutralizing antibody; Key target for vaccine design; Can be transmitted between different hosts through gene recombination or mutation of the receptor binding domain (RBD), leading to a higher mortality rate.