糖抗原125(CA125)重组蛋白

YB154Mu021
Recombinant Carbohydrate Antigen 125 (CA125)
Organism Species: Homo sapiens (Human)
Instruction manual
FOR IN VITRO USE AND RESEARCH USE ONLY
NOT FOR USE IN CLINICAL DIAGNOSTIC PROCEDURES
12th Edition (Revised in Aug, 2016)
[ PROPERTIES ]
Source: Prokaryotic expression. Host: E. coli
Residues: Arg13977~Ser14117
Tags: N-terminal His-Tag
糖抗原125(CA125)重组蛋白Tissue Specificity: Ovary. Subcellular Location: Cell membrane; Single-pass type I membrane protein. Secreted, extracellular Space. Purity: >95%
Traits: Freeze-dried powder
Buffer formulation: 20mM Tris, 150mM NaCl, pH8.0, containing 1mM EDTA, 1mM DTT, 0.01% sarcosyl, 5%Trehalose and Proclin300. Original Concentration: 200ug/mL
Applications: SDS-PAGE; WB; ELISA; IP; CoIP; Purification; Amine Reactive
Labeling. (May be suitable for use in other assays to be determined by the end user.)
Predicted isoelectric point: 6.2
Predicted Molecular Mass: 22.2kDa
糖抗原125(CA125)重组蛋白Accurate Molecular Mass: 26kDa as determined by SDS-PAGE reducing conditions. Phenomenon explanation:
The possible reasons that the actual band size differs from the predicted are as
follows:
1. Splice variants: Alternative splicing may create different sized proteins from the same gene. 2. Relative charge: The composition of amino acids may affects the charge of the protein. 3. Post-translational modification: Phosphorylation, glycosylation, methylation etc. 4. Post-translation cleavage: Many proteins are synthesized as pro-proteins, and then cleaved to
give the active form. 5. Polymerization of the target protein: Dimerization, multimerization etc. [ USAGE ]
Reconstitute in 20mM Tris, 150mM NaCl (pH8.0) to a concentration of 0.1-1.0
mg/mL. Do not vortex.
糖抗原125(CA125)重组蛋白[ STORAGE AND STABILITY ]
Storage: Avoid repeated freeze/thaw cycles. Store at 2-8
oC for one month. Aliquot and store at -80
oC for 12 months. Stability Test: The thermal stability is described by the loss rate. The loss rate
was determined by accelerated thermal degradation test, that is, incubate the
protein at 37
oC for 48h, and no obvious degradation and precipitation were
observed. The loss rate is less than 5% within the expiration date under
appropriate storage condition. [ SEQUENCE ]
[ IDENTIFICATION ]
Figure 1. Gene Sequencing (Extract)
Figure 2. SDS-PAGE