Antibodies

70-kDa Heat Shock Protein (Hsp70) is an abundant protein cofactor commonly known as a molecular chaperone. Found in most eukaryotes, Hsp genes are members of a heat-inducible multigene family. These proteins are found in most cellular compartments of eukaryotes - everything from nuclei, mitochondria, chloroplasts, to endoplasmic reticulum and cytosol.

PIEZO1, and its close homologue PIEZO2, are mechanosensitive ion channel proteins. Mechanosensitive ion channels couple protein conformation to the mechanics of the surrounding membrane, and switch between a closed state and an open state in response to changes in membrane tension, thickness, or curvature. Cells use this information to ensure viability under conditions of osmotic stress or membrane deformation (1).

Survivin is an anti-apoptotic protein from a large family with related members such as X-linked IAP, cIAP1 and cIAP2, IAP-like protein-2, melanoma IAP, Livin, and NAIP. Survivin regulates fundamental physiological events including the cell cycle, fetal development, and cell migration.

Hypoxia inducible factors (HIFs) are transcription factors that regulate the cellular response to decreases in oxygen levels. Under conditions of hypoxia HIFs activate the transcription of a diverse range of genes, resulting in increased oxygen delivery to the cell or metabolic adaptation.

GPR49/LGR5 (G protein-coupled receptor 49/leucine-rich repeat-containing G protein-coupled receptor 5) is also known by the names FEX, GPR67, GRP49, HG38, and MGC117008). It is an orphan receptor and structurally related to members of the mammalian large transmembrane glycoprotein hormone receptor family (FSH-R, TSH-R, and LH-R).

TRF2 (telomeric repeat-binding factor 2) is a homodimeric protein that binds the double-stranded 5'-TTAGGG-3' repeat in telomeres.

Caveolin-1 (CAV1) belongs to the caveolin family of integral membrane proteins 21-24 kD in size. This family of proteins forms the structural component of the caveolar membrane in caveolae, which are the specialized domains in plasma membrane that sequester lipids and proteins.

NBS1 (Nijmegen breakage syndrome protein 1) is a component of the MRN complex (Mre11-Rad50-Nbs1) that plays important role in detecting DNA double strand breaks (DSBs) and triggering the downstream cascade. DSBs can be caused by ionizing radiation, chemotherapy drugs, metabolic ROS, replication errors, programmed enzymatic activities during meiosis/V(D)J recombination, etc.

xCT, encoded by the gene SLC7A11, is a member of the heterodimeric amino acid transporter family. Proteins within this family are linked to one another via a disulphide bond to form heterodimers consisting of one light subunit and one heavy subunit (1). These heterodimers facilitate the transport of amino acids across cell membranes. The light subunit xCT dimerises with the heavy subunit 4F2hc and the role of the xCT-4F2hc heterodimer, also known as system Xc-, is to couple the release of one molecule of intracellular glutamate to the uptake of one molecule of extracellular cystine (2).

The DYKDDDDK Epitope Tag antibody was raised against a short, artificial sequence that is widely and commonly used as a protein fusion tag. It is pervasively present in a vast amount of scientific studies, and is a very powerful investigative research tool for applications such as immunofluorescence, immunoprecipitation, Western blot, and immunohistochemistry.