钙腔蛋白(CALU)重组蛋白

钙腔蛋白(CALU)重组蛋白

Recombinant Calumenin (CALU)

Crocalbin

[ PROPERTIES ]

Residues: Lys20~Phe315

Tags: Two N-terminal Tags, His-tag and T7-tag

Accession: O43852

Host: E. coli

Subcellular Location: Endoplasmic reticulum

lumen. Secreted. Melanosome. Sarcoplasmic

reticulum lumen.

Purity: >95%

Endotoxin Level: <1.0EU per 1μg

(determined by the LAL method).

Formulation: Supplied as lyophilized form in 20mM Tris,

150mM NaCl, pH8.0, containing 1mM EDTA, 1mM DTT,

0.01% sarcosyl, 5% trehalose, and preservative.

Predicted isoelectric point: 4.7

Predicted Molecular Mass: 38.8kDa

Accurate Molecular Mass: 49kDa as determined by SDS-PAGE reducing conditions.

Applications: SDS-PAGE; WB; ELISA; IP.

(May be suitable for use in other assays to be determined by the end user.)

Note: 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 sterile ddH2O. 

[ STORAGE AND STABILITY ]

Storage: Avoid repeated freeze/thaw cycles.

Store at 2-8oC for one month.

Aliquot and store at -80oC for 12 months.

Stability Test: The thermal stability is described by the loss rate of the targetprotein. The loss rate was determined by accelerated thermal degradation test,that is, incubate the protein at 37oC for 48h, and no obvious degradation andprecipitation were observed. (Referring from China Biological Products Standard,which was calculated by the Arrhenius equation.) The loss of this protein is lessthan 5% within the expiration date under appropriate storage condition.

[ SEQUENCES ]

The sequence of the target protein is listed below.

K PTEKKDRVHH EPQLSDKVHN DAQSFDYDHD AFLGAEEAKT FDQLTPEESK ERLGKIVSKIDG DK DG F VT V DE LK DWIK FA QK RWIY E DV E RQWK G H D L NE DG LVSWE E YKNATYGYVLDD PDPDDGFNYK QMMVRDERRF KMADKDGDLI ATKEEFTAFL HPEEYDYMKDIVVQETMEDI DKNADGFIDL EEYIGDMYSH DGNTDEPEWV KTEREQFVEF RDKNRDGKMDKEETKDWILP SDYDHAEAEA RHLVYESDQN KDGKLTKEEI VDKYDLFVGS QATDFGEALVRHDEF

[ REFERENCES ]

1. Vorum H., et al. (1998) Biochim. Biophys. Acta 1386:121-131. 

2. Yabe D., et al. (1998) Genomics 49:331-333. 

3. Vorum H., et al. (1999) Exp. Cell Res. 248:473-481. 

4. Tagliabracci V.S., et al. (2015) Cell 161:1619-1632

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