85-1437-57　［取扱停止］Platelet Derived Growth Factor AA, Recombinant, Human (PDGF-AA) 10ug　P4258-01A

特徴

• PDGFs are disulfide-linked dimers consisting of two 12.0-13.5kD polypeptide chains, designated PDGF-A and PDGF-B chains. The three naturally occurring PDGFs. (PDGF-AA, PDGF-BB and PDGF-AB) are potent mitogens for a variety of cell types including smooth muscle cells, connective tissue cells, bone and cartilage cells, and some blood cells. The PDGFs are stored in platelet alpha-granules and are released upon platelet activation. The PDGFs are involved in a number of biological processes, including hyperplasia, chemotaxis, embryonic neuron development, and respiratory tubule epithelial cell development. Two distinct signaling receptors used by PDGFs have been identified and named PDGFR-alpha and PDGFR-beta. PDGFR-alpha is high-affinity receptor for each of the three PDGF forms. On the other hand, PDGFR-beta interacts with only PDGF-BB and PDGF-AB. PDGF is released when platelets adhere to traumatized tissues. Connective tissue cells near the traumatized region respond by initiating the process of replication.The synthesis of PDGF can be induced by Interleukin-1, Interleukin-6, TNF-alpha, TGF-beta and EGF.
• Recombinant Human Platelet Derived Growth Factor-AA is a homodimeric, non-glycosylated, polypeptide chain containing 2 x 125 amino acids and having a total molecular mass of 28511 Dalton.
• Sequence:The sequence of the first five N-terminal amino acids was determined and was found to be Met-Ser-Ile-Glu-Glu.
• Dimers and Aggregates:≤ 1% as determined by silver-stained SDS-PAGE gel analysis.
• Biological Activity:PDGF-AA is fully biologically active when compared to standard. The ED50, calculated by the dose-dependent proliferation of murine BALB/c 3T3 indicator cells (measured by 3H-thymidine uptake) is < 1ng/ml, corresponding to a Specific Activity of 1MIU/mg.
• Endotoxin:≤ 0.1ng/ug (IEU/ug) of PDGF-AA.
• Protein Content:Protein quantitation was carried out by two independent methods:1. UV spectroscopy at 280nm using the absorbency value of 0.55 as the extinction coefficient for a 0.1% (1mg/ml) solution. This value is calculated by the PC GENE computer analysis program of protein sequences (IntelliGenetics). 2. Analysis by RP-HPLC, using a standard solution of PDGF-AA as a Reference Standard.
• Reconstitution:Reconstitute the lyophilized PDGF-AA in sterile 18M-cm H2O not less than 100ug/ml, which can then be further diluted to other aqueous solutions.
• Storage and Stability:Lyophilized powder may be stored at 4°C for short-term only. Reconstitute to nominal volume by adding sterile dH2O and store at -20°C. Reconstituted product is stable for 12 months at -20°C. For maximum recovery of product, centrifuge the original vial prior to removing the cap. Further dilutions can be made in assay buffer.
• Also Available:P4258: Platelet Derived Growth Factor AA, Recombinant, Human (PDGF-AA)P4258-01: Platelet Derived Growth Factor AA, Recombinant, Human (PDGF-AA)P4258-01A: Platelet Derived Growth Factor AA, Recombinant, Human (PDGF-AA)P4258-03: Platelet Derived Growth Factor AA, Recombinant, Human (PDGF-AA) Mab Mo xHuP4258-04: Platelet Derived Growth Factor AA (PDGF-AA) Pab Rb xHuP4258-04A: Platelet Derived Growth Factor AA (PDGF-AA) (Biotin) Pab Rb xHuP4258-14: Platelet Derived Growth Factor AA (PDGF-AA) (Biotin) Pab Rb xHuP4258-16A: Platelet Derived Growth Factor AA (PDGF-AA) Pab Rb xHuP4258-19: Platelet Derived Growth Factor AA,AB,BB Neutralizing (PDGF-AA,AB,BB) Pab Gt xHu