Human Siglec-15 is a transmembrane glycoprotein in the Siglec family. Siglecs are type I transmembrane proteins where the NH3+-terminus is in the extracellular space and the COO−-terminus is cytosolic. Each Siglec contains an N-terminal V-type immunoglobulin domain (Ig domain) which acts as the binding receptor for sialic acid. These lectins are placed into the group of I-type lectins because the lectin domain is an immunoglobulin fold. All Siglecs are extended from the cell surface by C2-type Ig domains which have no binding activity. Siglecs differ in the number of these C2-type domains. Human Siglec-15 consists of a 244 amino acid (aa) extracellular domain (ECD) with two Ig-like domains, a 21 aa transmembrane segment, and a 44 aa cytoplasmic domain. Siglec-15 function is important for osteoclast formation and TRANCE/RANK Ligand signaling in osteoclasts

Siglec-15 is a transmembrane glycoprotein in the Siglec family of sialic acid-binding immune regulatory molecules. Mature human Siglec-15 consists of a 244 amino acid extracellular domain (ECD) with two Ig-like domains, a 21 aa transmembrane segment, and a 44 aa cytoplasmic domain. Siglec-15 is a potential therapeutic target for osteoporosis and plays a conserved regulatory role in the immune system of vertebrates. Siglec-15 Protein (Primary Amine Labeling), Mouse, Recombinant (His), Biotinylated is expressed in HEK293 mammalian cells with C-His tag. The predicted molecular weight is 26.7 kDa and the accession number is A7E1W8-1.

CD33 is a type I Lectin belonging to the Ig superfamily. CD33 contains an N terminal Ig like V type domain, which mediates sialic acid binding, followed by one Ig like C2 type domain, a transmembrane region and a cytoplasmic tail containing two conserved immunoreceptor tyrosine based inhibition motifs (ITIMs). Eleven human Siglecs have been characterized. Siglecs 5 to 11 share a high degree of sequence similarity with CD33/Siglec3 both in their extracellular and intracellular regions. They are collectively referred to as CD33 related Siglecs. CD33 related Siglecs have differential expression pattern within the hematopoietic system. They are involved in the regulation of cellular activation within the immune system. Siglec 3 expression is restricted to cells of myelomonocytic lineage. Siglec3 recruits SHP1 and SHP2 to its ITIMs upon phosphorylation.

Siglec-3/CD33 Protein, Mouse, Recombinant (hFc) is expressed in HEK293 mammalian cells with hFc tag. The predicted molecular weight is 51.6 kDa and the accession number is Q63994-1.

Siglec-3/CD33 Protein, Human, Recombinant is expressed in HEK293 mammalian cells. The predicted molecular weight is 27.4 kDa and the accession number is AAH28152.1.

Siglec-3/CD33 Protein, Human, Recombinant (mFc) is expressed in HEK293 mammalian cells with mFc tag. The predicted molecular weight is 29.5 kDa and the accession number is AAH28152.1.

Siglec-3/CD33 Protein, Cynomolgus, Rhesus, Recombinant (His), Biotinylated is expressed in HEK293 mammalian cells with His tag. The predicted molecular weight is 27.3 kDa and the accession number is XP_005590138.1.

Siglec-3/CD33 Protein, Cynomolgus, Recombinant (His) is expressed in HEK293 mammalian cells with C-His tag. The predicted molecular weight is 26.83 kDa and the accession number is XP_005590138.1.

Siglec-3/CD33 Protein, Mouse, Recombinant (His) is expressed in HEK293 mammalian cells with His tag. The predicted molecular weight is 26 kDa and the accession number is Q63994-1.

Siglec-3/CD33 Protein, Human, Recombinant, FITC conjugated is expressed in HEK293 mammalian cells. The accession number is AAH28152.1.

Siglec-15 is a transmembrane glycoprotein in the Siglec family of sialic acid-binding immune regulatory molecules. Mature human Siglec-15 consists of a 244 amino acid extracellular domain (ECD) with two Ig-like domains, a 21 aa transmembrane segment, and a 44 aa cytoplasmic domain. Siglec-15 is a potential therapeutic target for osteoporosis and plays a conserved regulatory role in the immune system of vertebrates. Siglec-15 Protein, Cynomolgus, Recombinant (His & Avi), Biotinylated is expressed in HEK293 mammalian cells with C-His-Avi tag. The predicted molecular weight is 29.2 kDa and the accession number is XP_005586866.2.

Siglec-15 is a transmembrane glycoprotein in the Siglec family of sialic acid-binding immune regulatory molecules. Mature human Siglec-15 consists of a 244 amino acid extracellular domain (ECD) with two Ig-like domains, a 21 aa transmembrane segment, and a 44 aa cytoplasmic domain. Siglec-15 is a potential therapeutic target for osteoporosis and plays a conserved regulatory role in the immune system of vertebrates..

Siglec-3/CD33 Protein, Human, Recombinant (His & Avi) is expressed in HEK293 mammalian cells with C-His-Avi tag. The predicted molecular weight is 29.6 kDa and the accession number is P20138-1.

Siglec-3/CD33 Protein, Human, Recombinant (His & Avi), Biotinylated is expressed in HEK293 mammalian cells with C-His-Avi tag. The predicted molecular weight is 29.6 kDa and the accession number is P20138-1.

Siglec-15 Protein, Cynomolgus, Recombinant (His) is expressed in HEK293 mammalian cells with C-6xHis tag. The predicted molecular weight is 30-40 KDa and the accession number is A0A2K5UY47.

Siglec-3/CD33 Protein, Human, Recombinant (hFc) is expressed in HEK293 mammalian cells with hFc tag. The predicted molecular weight is 53.5 kDa and the accession number is AAH28152.1.

Siglec-3/CD33 Protein, Human, Recombinant (His & Avi), FITC-Labeled is expressed in HEK293 mammalian cells with C-His-Avi tag. The predicted molecular weight is 29.6 kDa and the accession number is P20138-1.

Siglec-3/CD33 Protein, Human, Recombinant (aa 18-259, hFc) is expressed in HEK293 mammalian cells with C-hFc tag. The predicted molecular weight is 53.6 kDa and the accession number is P20138-1.

Siglec-3/CD33 Protein, Human, Recombinant (His), Biotinylated is expressed in HEK293 mammalian cells with His tag. The predicted molecular weight is 28.2 kDa and the accession number is AAH28152.1.

Siglec-15 Protein, Human, Recombinant (hFc & Avi), Biotinylated is expressed in HEK293 mammalian cells with C-Fc-Avi tag. The predicted molecular weight is 58-75 KDa and the accession number is Q6ZMC9.

Siglec-15 is a transmembrane glycoprotein in the Siglec family of sialic acid-binding immune regulatory molecules. Mature human Siglec-15 consists of a 244 amino acid extracellular domain (ECD) with two Ig-like domains, a 21 aa transmembrane segment, and a 44 aa cytoplasmic domain. Siglec-15 is a potential therapeutic target for osteoporosis and plays a conserved regulatory role in the immune system of vertebrates. Siglec-15 Protein, Cynomolgus, Recombinant (His & Avi) is expressed in HEK293 mammalian cells with C-His-Avi tag. The predicted molecular weight is 29.2 kDa and the accession number is XP_005586866.2.

Siglec-3/CD33 Protein, Cynomolgus, Rhesus, Recombinant (His) is expressed in HEK293 mammalian cells with His tag. The predicted molecular weight is 27.3 kDa and the accession number is EHH59833.1&EHH30318.1.

Siglec-3/CD33 Protein, Mouse, Recombinant is expressed in HEK293 mammalian cells. The predicted molecular weight is 25.6 kDa and the accession number is Q63994-2.

Siglec-3/CD33 Protein, Human, Recombinant (His) is expressed in HEK293 mammalian cells with His tag. The predicted molecular weight is 28.2 kDa and the accession number is AAH28152.1.

Siglec-3/CD33 Protein, Human, Recombinant, PE conjugated is expressed in HEK293 mammalian cells. The accession number is AAH28152.1.

Siglec 5 to 11 share a high degree of sequence similarity with CD33/Siglec-3 both in their extracellular and intracellular regions. They are collectively referred to as CD33-related Siglecs. One remarkable feature of the CD33-related Siglecs is their differential expression pattern within the hematopoietic system. This fact, together with the presence of two conserved immunoreceptor tyrosine-based inhibition motifs (ITIMs) in their cytoplasmic tails, suggests that CD33-related Siglecs are involved in the regulation of cellular activation within the immune system. Mouse Siglec-F cDNA encodes a 569 amino acid polypeptide with a hydrophobic signal peptide, an N-terminal Ig-like V-type domain, three Ig-like C2-type domains, a transmembrane region and a cytoplasmic tail. The expression of Siglec-F is restricted to the cells of myelomonocytic lineage. Mouse Siglec-F is likely an ortholog of human Siglec-5. Unlike many human CD33-related Siglecs, which show similar binding to both alpha 2,3- and alpha 2,6-linked sialic acids, mouse Siglec-F preferentially recognize alpha 2,3-linked sialic acid.

Siglec-6 Protein, Human, Recombinant (hFc) is expressed in HEK293 mammalian cells with hFc tag. The predicted molecular weight is 60.7 kDa and the accession number is O43699-3.