Product Specifications:
Item# 1033: Recombinant HIV-1 clade E (Thai) gag p24
Concentration: See vial
Mass/vial: 100ug
Volume/vial: 100ul
Diluent: Na-Ac, 20mM,0.15M NaCl, pH.6.5
Purity: >95%
Stabilizer: None
Preservative: None
Storage: -75°C
Physical State: Frozen Liquid
Stability: At least 36 months at -75°C.
Applications: Elisa, Western Elisa, In-vitro HIV-1 Diagnostics
Description: Recombinant HIV-1clade E (Thai) gag p24 is a cytosolic protein produced in the Baculovirus Expression System.
Purification: This protein was purified by cation/anion affinity and gel exclusion chromatography to >95% purity as determined by SDS-PAGE, reduced (apparent molecular weight: 24kD). Quantitative determination of the protein was based on a sandwich capture ELISA using a qualified p24 preparation as a reference. The capture ELISA is sensitive to 1pg of p24; 1ng/ml of p24 shows an O.D. of 1.0 at 450nm under standard ELISA conditions.
Specificity: This protein binds to murine monoclonal antibodies of defined epitope specificity and to rabbit and human serum polyclonal antibodies in ELISA and Western ELISA.
Biological Activity: Not Determined
Application and Instructions for use
Recommended concentrations for use are approximate values. A dose dependent response assay should be performed to determine the optimal concentration for use in specific applications. ELISA and Western ELISA may be performed at 10-100ng protein depending on the nature and affinity of the detection reagent. HIV –1 converted uman serum polyclonal antibodies yield titers of up to 1:100,000 at 10 -100ng of immobilized protein under standard ELISA conditions.
Glossary
Gene and Gene Products
Structural Proteins: Structural proteins – the products of gag, pol and env genes, which are essential components of the retroviral particle.
Regulatory Proteins: Regulatory proteins – tat and rev proteins of HIV/SIV and tax and rex proteins of HTLVs; essential for viral expression in infected cells.
Accessory Proteins: Accessory proteins – additional (non-regulatory) virion – and non virion-associated proteins produced by HIV/SIV retroviruses: vif, vpr, vpu, vpx, and nef. Although, the accessory proteins are not necessary for viral propagation in tissue culture, they have been conserved in the different isolates; this conservation and experimental observations suggest that their role in vivo is very important.
gag
gag – group-sepecifc antigens or capsid proteins; the precursor is the p55 myristoylated protein, which is processed to p17 (Matrix) p24 (Capsid) and p7 (NucleoCapsid) proteins by the viral protease. Other small proteins are generated from the gag polyprotein.
pol
pol – (p66) generates the viral enzymes protease (p11), reverse transcriptase (p51), endonuclease and integrase (p32) after the processing of a gag-pol precursor polyprotein by the viral protease; gag-pol precursor is produced by ribosome frameshifting.
env
env – viral glycoproteins produced as a precursor (gp160) and processed to the external glycoprotein (gp120) and the transmembrane glycoprotein (gp41). The mature proteins are held together by noncovalent interactions; as a result substantial amount of gp120 is released extracellularly. The external glycoprotein (gp120) contains the binding site for the CD4 receptor.
tat
tat – transactivator of HIV gene expression; one of the two necessary viral regulatory factors (tat and rev) for HIV gene expression. Two forms are known, tat-1 exon (minor form) of 72 amino acids, and tat-2 exon (major form) of 86 amino acids. The electrophoretic mobility of these two forms in SDS gels is anomalous; they are approximately 16 kD and 14 kD in weight. Low levels of both proteins are found in persistently infected cells. tat is localized primarily in the nucleolus/nucleus; it acts by binding to the TAR RNA element and activating transcription from the LTR promoter. Post-transcriptional effects of tat have been postulated.
rev
rev – the second necessary regulatory factor for HIV expression. A 19 kD phosphoprotein localized primarily in the nucleolus/nucleus, rev acts by binding to RRE and promoting the nuclear export, stabilization and utilization of the viral mRNAs containing RRE.
vif
vif – viral infectivity factor, typically 23 kD; required for the efficient transmission of cell-free virus in tissue culture. In the absence of vif, the produced viral particles are defective, while the cell-to-cell transmission of virus is not affected significantly. It has been reported that the cellular localization is in the Golgi (vif is not found in the virion).
nef
nef – approximately 27 kD non-virion protein found in the cytoplasm of infected cells. Potentially myristoylated and associated with the inner plasma membrane. One of the first HIV proteins to be produced in the infected cells, it is the most immunogenic of the accessory proteins and may be used in the future for diagnosis and staging of the disease. NEF is dispensable and probably suffers counter-selection during ex vivo viral propagation in vivo. Recent evidence suggests that SIV nef is required for viral propagation in vivo.
vpr
vpr – virion-associated protein of unknown function found in HIV-1, HIV-2, SIVmac, and SIVmnd; typically 15 kD. May be homologous to vpx. Also called “rap” for rapid.
vpu
vpu – protein that promotes extracellular release of viral particles. Found only in HIV-1. Integral membrane phosphoprotein of 16kd; similar to M2 protein of influenza virus. It may be involved in env maturation. It is not found in the virion.
vpx
vpx – virion protein of 12 kD found only in HIV-2 infection. (vpx may have some homology with vpr).
Related research paper:
ebiomall.com
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塑料类工具灭菌有什么需要注意的吗？谢谢！
四字原则：吸 擦 调 放
吸：用吸耳球吸取液体，四指拿移液管，食指扣于移液管上口。
擦：吸取后用滤纸擦干管壁。
调：放松食指使液体流出，调至刻度线，按紧。
放：沿器壁放入所需容器。
垂直是为了保证最后只剩下半滴时，移液管不计算在内的体积。如果移液管上没有写“吹”字，那么最后半滴可以不要。
移液管
用来准确移取一定体积的溶液的量器。移液管是一种量出式仪器，只用来测量它所放出溶液的体积。它是一根中间有一膨大部分的细长玻璃管。其下端为尖嘴状，上端管颈处刻有一条标线，是所移取的准确体积的标志。
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