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- 產(chǎn)品名稱： Recombinant Human AHSP protein
- 產(chǎn)品貨號： CSP01272
- 貨期： 現(xiàn)貨
- 價格與訂購： 1800
- 數(shù)量：
庫存： 100
- 規(guī)格： 50μg 100μg 1mg
- 產(chǎn)品信息
- 如何訂購
概述（Summary）
英文全稱
Recombinant Human AHSP protein
純度（Purity）
>90% as determined by SDS-PAGE
內(nèi)毒素（Endotoxin level）
Please contact with the lab for this information.
蛋白構(gòu)建（Construction）
A DNA sequence encoding the human AHSP (Met1-Ser102) was fused with His tag
Accession #
Q9NZD4
表達宿主（Host）
E.coli
種屬（Species）
Homo sapiens (Human)
預測分子量（Predicted Molecular Mass）
13.88 kDa
制劑（Formulation）
Supplied as solution form in PBS pH 7.5 or lyophilized from PBS pH 7.5.
運輸方式（Shipping）
In general, proteins are provided as lyophilized powder/frozen liquid. They are shipped out with dry ice/blue ice unless customers require otherwise.
穩(wěn)定性&儲存（Stability &Storage）
Use a manual defrost freezer and avoid repeated freeze thaw cycles.
Store at 2 to 8 °C for one week .
Store at -20 to -80 °C for twelve months from the date of receipt.
Store at 2 to 8 °C for one week .
Store at -20 to -80 °C for twelve months from the date of receipt.
復溶（Reconstitution）
Reconstitute in sterile water for a stock solution.A copy of datasheet will be provided with the products, please refer to it for details.
背景（Background）
背景介紹
AHSP, also known as ERAF, is a conserved mammalian erythroid protein which belongs to the AHSP family. It is expressed in blood and bone marrow. AHSP facilitates the production of Hemoglobin A by stabilizing free α-globin. It rapidly binds to ferrous α with association (k'(AHSP)) and dissociation (k(AHSP)) rate constants of ≈1 μm(-1) s(-1) and .2 s(-1), respectively, at pH 7.4 at 22 ℃. A small slow phase was observed when AHSP binds to excess ferrous αCO. This slow phase appears to be due to cis to trans prolyl isomerization of the Asp(29)-Pro(3) peptide bond in wild-type AHSP because it was absent when αCO was mixed with P3A and P3W AHSP, which are fixed in the trans conformation. This slow phase was also absent when met(Fe(3+))-α reacted with wild-type AHSP, suggesting that met-α is capable of rapidly binding to either Pro(3) conformer. Both wild-type and Pro(3)-substituted AHSPs drive the formation of a met-α hemichrome conformation following binding to either met- or oxy(Fe(2+))-α. The dissociation rate of the met-α·AHSP complex (k(AHSP) ≈ .2 s(-1)) is ～1-fold slower than that for ferrous α·AHSP complexes, resulting in a much higher affinity of AHSP for met-α. Thus, in vivo, AHSP acts as a molecular chaperone by rapidly binding and stabilizing met-α hemichrome folding intermediates. The low rate of met-α dissociation also allows AHSP to have a quality control function by kinetically trapping ferric α and preventing its incorporation into less stable mixed valence Hemoglobin A tetramers. Reduction of AHSP-bound met-α allows more rapid release to β subunits to form stable fully, reduced hemoglobin dimers and tetramers.
分子別名（Alternative Names）
Alpha-hemoglobin-stabilizing protein,Erythroid differentiation-related factor,Erythroid-associated factor.
Note
For research use only .
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Amily
