protein_function: Metalloproteinase inhibitor that functions by formingone to one complexes with target metalloproteinases, such ascollagenases, and irreversibly inactivates them by binding totheir catalytic zinc cofactor. Acts on MMP1, MMP2, MMP3, MMP7,MMP8, MMP9, MMP10, MMP11, MMP12, MMP13 and MMP16. Does not act onMMP14. Also functions as a growth factor that regulates celldifferentiation, migration and cell death and activates cellularsignaling cascades via CD63 and ITGB1. Plays a role in integrinsignaling. Also stimulates steroidogenesis by Leydig and ovariangranuloma cells; procathepsin L is required for maximal activity..
The tissue inhibitor of metalloproteinases 1(TIMP1) is also called erythroid-potentiating activity(EPA). The X-linked gene for human TIMP1 is expressed in some but not all inactive X-containing somatic-cell hybrids, suggesting that this gene is either prone to reactivation or variable in its inactivation.1 Purified EPA specifically stimulates human and murine cells of the erythroid lineage, unlike murine interleukin-3(IL-3) which stimulates precursor cells from all haematopoietic lineages.2 TIMP1 is thought to play a regulatory role in connective tissues by forming inactive complexes with those metalloproteinases that are normally responsible for connective tissue turnover. The human gene encoding TIMP has been mapped to the X chromosome in the region Xp11.1-p11.4.3 The standard product used in this kit is recombinant rat TIMP-1, consisting of 194 amino acids with the molecular mass of 21.5KDa. As a result of glycosylation, the molecular mass is 32-34KDa.