eukaryotic translation elongation factor 1 alpha 1 (EEF1A1) encodes an isoform of the alpha subunit of the elongation factor-1 complex, which is responsible for the enzymatic delivery of aminoacyl tRNAs to the ribosome. This isoform (alpha 1) is expressed
IgG has four forms, provides the majority of antibody-based immunity against invading pathogens. The only antibody capable of crossing the placenta to give passive immunity to the fetus. Eliminates pathogens in the early stages of B cell-mediated (humoral
β-Endorphin (β-EP) is an endogenous opioid neuropeptide with diverse biological activities. It is produced via piomelanocortin cleavage in the pituitary gland, hypothalamus, and in lymphocytes, then migrates to its sites of action which include plasma, gut, skin, placenta, cerebrospinal fluid, and cardiac tissues. β-EP induces concentration-dependent decreases in electrically stimulated contraction of the mouse vas deferens that can be reversed by the μ-opioid antagonist CTP and δ-opioid antagonist ICI 174,864. In vivo, β-EP (5 μg, i.c.v.) slows gastrointestinal transit in mice. β-EP (0.5 or 5 μg, i.c.v.) stimulates food intake in rats for 4 to 6 hours, however, this effect is not prolonged with continuous infusion. It antagonizes the appetite-suppressive effects of α-melanocyte-stimulating hormone (α-MSH) for the first three days post administration. β-EP also reduces paralytic demyelination induced by the murine coronavirus MHV-JHM in immunocompetent, but not irradiated or immune-incompetent, mice and rats.
MAGE-3 (271-279) is a peptide consisting of 271-279 amino acid residues that is derived from melanoma antigens encoded by the MAGE-3 gene. It is specifically recognized by cytolytic T lymphocytes (CTLs) and binds to the human leukocyte antigen (HLA)-A2 molecule. MAGE-3 is highly expressed in various human tumor types, such as malignant melanoma, but not in normal tissues, except for the testis and placenta.
Relaxin C-peptide, as a synthetic 14-amino acid peptide found in human decidua & placenta, can represent a partial sequence of human relaxin connecting peptide.