Name :
ABHD10 Protein
Description :
Mycophenolic acid (MPA), the active metabolite of the immunosuppressant mycophenolate mofetil (MMF), is primarily metabolized by glucuronidation to a phenolic glucuronide (MPAG) and an acyl glucuronide (AcMPAG). It is known that AcMPAG, which may be an immunotoxic metabolite, is deglucuronidated in human liver. AcMPAG deglucuronidation activity was detected in both human liver cytosol (HLC) and microsomes (HLM). By purification from HLC with column chromatographic purification steps, the enzyme responsible for AcMPAG deglucuronidationis identified as α/β hydrolase domain containing 1 (ABHD1). Recombinant ABHD1 expressed in Sf9 cells efficiently deglucuronidated AcMPAG with a K(m) value of 1.7 ± 1.2 μM, which was similar to those in HLM, HLC, and human liver homogenates (HLH). Immunoblot analysis revealed ABHD1 protein expression in both HLC and HLM. The AcMPAG deglucuronidation by recombinant ABHD1, HLC, and HLH were potently inhibited by AgNO(3), CdCl(2), CuCl(2), PMSF, bis-p-nitrophenylphosphate, and DTNB. The CL(int) value of AcMPAG formation from MPA, which was catalyzed by human UGT2B7, in HLH was increased by 1.8-fold in the presence of PMSF. Thus, human ABHD1 would affect the formation of AcMPAG, the immunotoxic metabolite.
Species :
Human
Uniprotkb :
Baculovirus-Insect Cells
Tag :
His
Synonyms :
ABHD10, abhydrolase domain containing 10
Construction :
A DNA sequence encoding the human ABHD10 (Q9NUJ1)(Thr53-Asn306) was fused with a polyhistide tag at the N-terminus.
Protein Purity :
> 90 % as determined by SDS-PAGE
Molecular Weight :
Approxiamtely 30.3 kDa
Endotoxin :
Formulatione :
Lyophilized from sterile 20mM Tris, 500mM NaCl, 10% glycerol, pH 8.0. Please contact us for any concerns or special requirements. Normally 5 % – 8 % trehalose, mannitol and 0. 01% Tween 80 are added as protectants before lyophilization. Please refer to the specific buffer information in the hard copy of CoA.
Reconstitution :
A hardcopy of datasheet with reconstitution instructions is sent along with the products. Please refer to it for detailed information.
Stability & Storage :
Samples are stable for up to twelve months from date of receipt at -20℃ to -80℃. Store it under sterile conditions at -20℃ to -80℃. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.
Shipping :
In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature.Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise.
Research Background :
Mycophenolic acid (MPA), the active metabolite of the immunosuppressant mycophenolate mofetil (MMF), is primarily metabolized by glucuronidation to a phenolic glucuronide (MPAG) and an acyl glucuronide (AcMPAG). It is known that AcMPAG, which may be an immunotoxic metabolite, is deglucuronidated in human liver. AcMPAG deglucuronidation activity was detected in both human liver cytosol (HLC) and microsomes (HLM). By purification from HLC with column chromatographic purification steps, the enzyme responsible for AcMPAG deglucuronidationis identified as α/β hydrolase domain containing 1 (ABHD1). Recombinant ABHD1 expressed in Sf9 cells efficiently deglucuronidated AcMPAG with a K(m) value of 1.7 ± 1.2 μM, which was similar to those in HLM, HLC, and human liver homogenates (HLH). Immunoblot analysis revealed ABHD1 protein expression in both HLC and HLM. The AcMPAG deglucuronidation by recombinant ABHD1, HLC, and HLH were potently inhibited by AgNO(3), CdCl(2), CuCl(2), PMSF, bis-p-nitrophenylphosphate, and DTNB. The CL(int) value of AcMPAG formation from MPA, which was catalyzed by human UGT2B7, in HLH was increased by 1.8-fold in the presence of PMSF. Thus, human ABHD1 would affect the formation of AcMPAG, the immunotoxic metabolite.
References and Literature :
1. Nardini M. et al., 1999, Curr Opin Struct Biol. 9 (6): 732-7. 2. Carr PD. et al., 2009, Protein Pept Lett. 16 (10): 1137-48. 3. Cheah E. et al., 1992, Protein Eng. 5 (3): 197-211. 4. Iwamura A. et al., 2012, J Biol Chem. 287 (12): 9240-9.
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