Disintegrin and metalloproteinase domain-containing protein 15 is an enzyme that in humans is encoded by the ADAM15 gene. [5]
The protein encoded by this gene is a member of the ADAM (a disintegrin and metalloproteinase) protein family. ADAM family members are type I transmembrane glycoproteins known to be involved in cell adhesion and proteolytic ectodomain processing of cytokines and adhesion molecules. This protein contains multiple functional domains including a zinc-binding metalloprotease domain, a disintegrin-like domain, as well as an EGF-like domain. Through its disintegrin-like domain, this protein specifically interacts with the integrin beta chain, beta 3. It also interacts with Src family protein-tyrosine kinases in a phosphorylation-dependent manner, suggesting that this protein may function in cell-cell adhesion as well as in cellular signaling. Multiple alternatively spliced transcript variants encoding distinct isoforms have been observed. [6]
ADAM15 has been associated with a number of diseases, most recently Rheumatoid Arthritis where it is required for the activation of the FAK and Src pathways to generate apoptosis resistance in response to apoptotic signalling or cell stress. [7] ADAM15 also has an antiapoptotic effect in osteoarthritic chondrocytes. [8]
The precise role of ADAM15 in cancer is still unclear but the metalloprotein has been linked to a number of different cancerous diseases such as Breast cancer where the expression of the protein is increased in carcinoma in-situ, invasive carcinoma and metastatic breast cancer tissues [9] Additionally, the alternative splice variant forms of ADAM15 have also been correlated with different prognosis in 48 breast cancer patients based upon their expression levels. [10] ADAM15 has also been shown to have a role in prostate cancer again through increased expression in neoplastic and metastatic tissues compared to normal prostate tissues [9] and also through its modulation of epithelial cell- tumour cell interactions. [11]
ADAM15 has been shown to interact with:
The alternatively spliced isoforms have also been shown to exhibit different preferential interactions with proteins containing SH3 domains. [10] [14]
ADAMs are a family of single-pass transmembrane and secreted metalloendopeptidases. All ADAMs are characterized by a particular domain organization featuring a pro-domain, a metalloprotease, a disintegrin, a cysteine-rich, an epidermal-growth factor like and a transmembrane domain, as well as a C-terminal cytoplasmic tail. Nonetheless, not all human ADAMs have a functional protease domain, which indicates that their biological function mainly depends on protein–protein interactions. Those ADAMs which are active proteases are classified as sheddases because they cut off or shed extracellular portions of transmembrane proteins. For example, ADAM10 can cut off part of the HER2 receptor, thereby activating it. ADAM genes are found in animals, choanoflagellates, fungi and some groups of green algae. Most green algae and all land plants likely lost ADAM proteins.
Adapter molecule crk also known as proto-oncogene c-Crk is a protein that in humans is encoded by the CRK gene.
Proto-oncogene tyrosine-protein kinase Fyn is an enzyme that in humans is encoded by the FYN gene.
Protein tyrosine kinase 2 beta is an enzyme that in humans is encoded by the PTK2B gene.
Disintegrin and metalloproteinase domain-containing protein 12 is an enzyme that in humans is encoded by the ADAM12 gene. ADAM12 has two splice variants: ADAM12-L, the long form, has a transmembrane region and ADAM12-S, a shorter variant, is soluble and lacks the transmembrane and cytoplasmic domains.
Breast cancer anti-estrogen resistance protein 1 is a protein that in humans is encoded by the BCAR1 gene.
Neural precursor cell expressed developmentally down-regulated protein 9 (NEDD-9) is a protein that in humans is encoded by the NEDD9 gene. NEDD-9 is also known as enhancer of filamentation 1 (EF1), CRK-associated substrate-related protein (CAS-L), and Cas scaffolding protein family member 2 (CASS2). An important paralog of this gene is BCAR1.
A disintegrin and metalloproteinase with thrombospondin motifs 1 is an enzyme that in humans is encoded by the ADAMTS1 gene.
Endophilin-A1 is a protein that in humans is encoded by the SH3GL2 gene.
Disintegrin and metalloproteinase domain-containing protein 9 is an enzyme that in humans is encoded by the ADAM9 gene.
Sorting nexin-9 is a protein that in humans is encoded by the SNX9 gene.
ADAM19 , is a human gene.
Mitotic spindle assembly checkpoint protein MAD2B is a protein that in humans is encoded by the MAD2L2 gene.
Sperm-associated antigen 5 is a protein that in humans is encoded by the SPAG5 gene.
See also: List of proteins in the human body
Protein kinase C and casein kinase substrate in neurons protein 3 is an enzyme that in humans is encoded by the PACSIN3 gene.
Disintegrin and metalloproteinase domain-containing protein 23 is a non-catalytic protein that in humans is encoded by the ADAM23 gene. It is a member of the ADAM family of extracellular matrix metalloproteinases.
Disintegrin and metalloproteinase domain-containing protein 28 is an enzyme that in humans is encoded by the ADAM28 gene.
Disintegrin and metalloproteinase domain-containing protein 11 is an enzyme that in humans is encoded by the ADAM11 gene.
Angiogenesis is the process of forming new blood vessels from existing blood vessels, formed in vasculogenesis. It is a highly complex process involving extensive interplay between cells, soluble factors, and the extracellular matrix (ECM). Angiogenesis is critical during normal physiological development, but it also occurs in adults during inflammation, wound healing, ischemia, and in pathological conditions such as rheumatoid arthritis, hemangioma, and tumor growth. Proteolysis has been indicated as one of the first and most sustained activities involved in the formation of new blood vessels. Numerous proteases including matrix metalloproteinases (MMPs), a disintegrin and metalloproteinase domain (ADAM), a disintegrin and metalloproteinase domain with throbospondin motifs (ADAMTS), and cysteine and serine proteases are involved in angiogenesis. This article focuses on the important and diverse roles that these proteases play in the regulation of angiogenesis.