Recombinant Human PHYH Protein

Name: Recombinant Human PHYH Protein
Brand: Beta LifeScience
SKU: BLPSN-3813
Availability: InStock

Collections: Other recombinant proteins, Recombinant proteins

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Product Overview

Tag	N/A
Host Species	Human
Accession	O14832
Synonym	LN1, LNAP1, PAHX, PHYH1, RD
Background	PHYH belongs to the family of iron(II)-dependent oxygenases, which typically incorporate one atom of dioxygen into the substrate and one atom into the succinate carboxylate group. PHYH is expressed in liver, kidney, and T-cells, but not in spleen, brain, heart, lung and skeletal muscle. It converts phytanoyl-CoA to 2-hydroxyphytanoyl-CoA. Defects in PHYH can cause Refsum disease (RD). RD is an autosomal recessive disorder characterized clinically by a tetrad of abnormalities: retinitis pigmentosa, peripheral neuropathy, cerebellar ataxia, and elevated protein levels in the cerebrospinal fluid (CSF). Patients exhibit accumulation of the branched-chain fatty acid, phytanic acid, in blood and tissues.
Description	A DNA sequence encoding the human PHYH (O14832) (Ser31-Leu338) was expressed, with a N-terminal Met.
Source	E.coli
Predicted N Terminal	Met
AA Sequence	Ser31-Leu338
Molecular Weight	The recombinant human PHYH consists of 309 a.a. and predicts a molecular mass of 35.6 KDa. It migrates as an approximately 26-32 KDa band in SDS-PAGE under reducing conditions.
Purity	>80% as determined by SDS-PAGE
Endotoxin	Please contact us for more information.
Bioactivity	Please contact us for detailed information
Formulation	Lyophilized from sterile 20mM mops, 10% glycerol, 2mM DDT, 1mM EDTA, 0.2mM PMSF, 0.2M NaCl, pH 7.2.
Stability	The recombinant proteins are stable for up to 1 year from date of receipt at -70°C.
Usage	For Research Use Only
Storage	Store the protein under sterile conditions at -20°C to -80°C. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.

Target Details

Target Function	Catalyzes the 2-hydroxylation of not only racemic phytanoyl-CoA and the isomers of 3-methylhexadecanoyl-CoA, but also a variety of other mono-branched 3-methylacyl-CoA esters (with a chain length of at least seven carbon atoms) and straight-chain acyl-CoA esters (with a chain length longer than four carbon atoms). Does not hydroxylate long and very long straight chain acyl-CoAs or 2-methyl- and 4-methyl-branched acyl-CoAs.
Subcellular Location	Peroxisome.
Protein Families	PhyH family
Database References	HGNC: 8940 OMIM: 266500 KEGG: hsa:5264 STRING: 9606.ENSP00000263038 UniGene: Hs.498732
Associated Diseases	Refsum disease (RD)
Tissue Specificity	Expressed in liver, kidney, and T-cells, but not in spleen, brain, heart, lung and skeletal muscle.

Gene Functions References

3 heterozygous variants: c.85C>T (p.Pro29Ser), c.135-2A>G, and c.768del63bp (p.Phe257Glnfs*16) were found in a family with Refsum's disease. PMID: 28681609
substrate specificity of PAHX is broader than expected, so Refsum disease might be characterized by an accumulation of not only phytanic acid but also other 3-alkyl-branched fatty acids PMID: 12923223
Ten novel PHYH mutations found in Refsum disease patients. PMID: 14974078
demonstrate that both unprocessed and processed forms are able to hydroxylate a range of CoA derivatives; site-directed mutagenesis was used to support proposals for the identity of the iron binding istes of PAHX PMID: 15930519
manner in which phytanoyl-CoA 2-hydroxylase (PAHX) binds to iron(II) and 2-oxoglutarate at its active site distinguishes it from that of the other human 2-oxoglutarate (2OG)-dependent oxygenase PMID: 16186124
In the absence of elevated phytanic acid concentrations, clinical neurologic abnormalities in heterozygous relatives of Refsum patients are not attributable to heterozygosity for PAHX mutations. PMID: 18612766

FAQs

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Proteins are sensitive to heat, and freeze-drying can preserve the activity of the majority of proteins. It improves protein stability, extends storage time, and reduces shipping costs. However, freeze-drying can also lead to the loss of the active portion of the protein and cause aggregation and denaturation issues. Nonetheless, these adverse effects can be minimized by incorporating protective agents such as stabilizers, additives, and excipients, and by carefully controlling various lyophilization conditions.

Commonly used protectant include saccharides, polyols, polymers, surfactants, some proteins and amino acids etc. We usually add 8% (mass ratio by volume) of trehalose and mannitol as lyoprotectant. Trehalose can significantly prevent the alter of the protein secondary structure, the extension and aggregation of proteins during freeze-drying process; mannitol is also a universal applied protectant and fillers, which can reduce the aggregation of certain proteins after lyophilization.

Our protein products do not contain carrier protein or other additives (such as bovine serum albumin (BSA), human serum albumin (HSA) and sucrose, etc., and when lyophilized with the solution with the lowest salt content, they often cannot form A white grid structure, but a small amount of protein is deposited in the tube during the freeze-drying process, forming a thin or invisible transparent protein layer.

Reminder: Before opening the tube cap, we recommend that you quickly centrifuge for 20-30 seconds in a small centrifuge, so that the protein attached to the tube cap or the tube wall can be aggregated at the bottom of the tube. Our quality control procedures ensure that each tube contains the correct amount of protein, and although sometimes you can't see the protein powder, the amount of protein in the tube is still very precise.

To learn more about how to properly dissolve the lyophilized recombinant protein, please visit Lyophilization FAQs.