background:
The matrix metalloproteinases (MMPs) are a family of at least eighteen secreted and membrane bound zincendopeptidases. Collectively, these enzymes can degrade all the components of the extracellular matrix, including fibrillar and non fibrillar collagens, fibronectin, laminin and basement membrane glycoproteins. In general, a signal peptide, a propeptide, and a catalytic domain containing the highly conserved zinc binding site characterizes the structure of the MMPs. In addition, fibronectin like repeats, a hinge region, and a C terminal hemopexin like domain allow categorization of MMPs into the collagenase, gelatinase, stomelysin and membrane type MMP subfamilies. All MMPs are synthesized as proenzymes, and most of them are secreted from the cells as proenzymes. Thus, the activation of these proenzymes is a critical step that leads to extracellular matrix breakdown. MMPs are considered to play an important role in wound healing, apoptosis, bone elongation, embryo development, uterine involution, angiogenesis and tissue remodeling, and in diseases such as multiple sclerosis, Alzheimer's, malignant gliomas, lupus, arthritis, periodontis, glumerulonephritis, atherosclerosis, tissue ulceration, and in cancer cell invasion and metastasis.
Function:
Cleaves collagens of types I, II, and III at one site in the helical domain. Also cleaves collagens of types VII and X. In case of HIV infection, interacts and cleaves the secreted viral Tat protein, leading to a decrease in neuronal Tat's mediated neurotoxicity.
Subunit:
Interacts with HISLV1 Tat.
Subcellular Location:
Secreted, extracellular space, extracellular matrix (Probable).
Similarity:
Belongs to the peptidase M10A family.
Contains 4 hemopexin-like domains.
Database links:
Entrez Gene: 4312 Human
Entrez Gene: 17386 Mouse
Entrez Gene: 39764 Pig
Entrez Gene: 100009110 Rabbit
Omim: 120353 Human
SwissProt: P28053 Cow
SwissProt: P03956 Human
SwissProt: P33435 Mouse
SwissProt: P21692 Pig
SwissProt: P13943 Rabbit
Unigene: 83169 Human
Important Note:
This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications.
基质金属蛋白酶(matrix metalloproteinases, MMPs)是一族依赖锌离子而降解各种细胞外基质的蛋白酶，亦称IV型胶原酶或称明胶酶A，其主要功能为降解IV型胶原，因而它在肿瘤细胞突破基底膜屏障和浸润转移中起重要作用。
目前主要用于各种恶性肿瘤(如乳腺癌、胃肠道癌、卵巢癌、膀胱癌等)中的基底膜检测与肿瘤转移浸润的研究。
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