MMAB Human

Methylmalonic Aciduria Type B Human Recombinant
Cat. No.
BT10510
Source
Escherichia Coli.
Synonyms
CBIB, Cob(I)alamin adenosyltransferase, EC 2.5.1.17.
Appearance
Sterile Filtered clear solution.
Purity
Greater than 95.0% as determined by SDS-PAGE.
Usage

Prospec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

Shipped with Ice Packs
In Stock

Description

MMAB Recombinant Human produced in E.Coli is a single, non-glycosylated polypeptide chain containing 239 amino acids (33-250 a.a.) and having a molecular mass of 26.3 kDa. The MMAB is fused to 21 amino acid His-Tag at N-terminus and purified by proprietary chromatographic techniques.

Product Specs

Introduction
The MMAB protein plays a crucial role in the final step of converting vitamin B12 into adenosylcobalamin (AdoCbl), a vital coenzyme for methylmalonyl-CoA mutase (MCM) that contains vitamin B12. Deficiencies in MMAB activity are linked to an inherited disorder known as vitamin B12-dependent methylmalonic aciduria, which is associated with the cblB complementation group.
Description
Recombinant Human MMAB, synthesized in E. coli, is a single, non-glycosylated polypeptide chain consisting of 239 amino acids (specifically, residues 33-250). With a molecular weight of 26.3 kDa, the MMAB protein is fused to a 21 amino acid His-Tag at its N-terminus. Purification is achieved through proprietary chromatographic methods.
Physical Appearance
The product is a clear solution that has been sterilized through filtration.
Formulation
The MMAB protein solution has a concentration of 1 mg/ml and contains 20 mM Tris buffer at pH 7.5 and 10% glycerol.
Stability
While Human MMAB remains stable at 4°C for a period of one week, it is recommended to store the protein below -18°C to ensure its long-term stability. It is crucial to avoid repeated freeze-thaw cycles.
Purity
SDS-PAGE analysis has determined the purity of the MMAB protein to be greater than 95.0%.
Synonyms
CBIB, Cob(I)alamin adenosyltransferase, EC 2.5.1.17.
Source
Escherichia Coli.
Amino Acid Sequence

MGSSHHHHHH SSGLVPRGSH MQSRGPQGVE DGDRPQPSSK TPRIPKIYTK TGDKGFSSTF TGERRPKDDQ VFEAVGTTDE LSSAIGFALE LVTEKGHTFA EELQKIQCTL QDVGSALATP CSSAREAHLK YTTFKAGPIL ELEQWIDKYT SQLPPLTAFI LPSGGKISSA LHFCRAVCRR AERRVVPLVQ MGETDANVAK FLNRLSDYLF TLARYAAMKE GNQEKIYKKN DPSAESEGL.

Product Science Overview

Introduction

Methylmalonic Aciduria (MMA) is a rare metabolic disorder characterized by the accumulation of methylmalonic acid in the blood and urine. This condition is caused by a deficiency in the enzyme methylmalonyl-CoA mutase, which is essential for the metabolism of certain amino acids and fatty acids . MMA can be classified into different types based on the underlying genetic mutations and the specific metabolic pathways affected.

Methylmalonic Aciduria Type B (cblB)

Methylmalonic Aciduria Type B, also known as cblB type, is a specific form of MMA caused by mutations in the MMAB gene. This gene encodes an enzyme called adenosyltransferase, which is involved in the conversion of vitamin B12 into its active form, adenosylcobalamin (AdoCbl) . AdoCbl is a crucial coenzyme for the proper functioning of methylmalonyl-CoA mutase.

Human Recombinant MMAB

Human recombinant MMAB is a laboratory-produced version of the MMAB enzyme. It is typically produced in Escherichia coli (E. coli) bacteria and purified using chromatographic techniques . The recombinant enzyme is used in research and therapeutic applications to study the biochemical pathways involved in MMA and to develop potential treatments for the disorder.

Biochemical Pathways

The MMAB enzyme catalyzes the final step in the conversion of vitamin B12 into AdoCbl. This process is essential for the proper metabolism of certain amino acids (such as threonine, methionine, isoleucine, and valine) and odd-chain fatty acids . In individuals with cblB type MMA, the deficiency of MMAB leads to the accumulation of methylmalonic acid, resulting in various clinical symptoms.

Clinical Symptoms and Diagnosis

Patients with MMA, including the cblB type, may present with a range of symptoms, including developmental delays, feeding difficulties, vomiting, lethargy, and metabolic acidosis . Diagnosis is typically based on biochemical tests that measure the levels of methylmalonic acid in the blood and urine, as well as genetic testing to identify mutations in the MMAB gene.

Treatment and Management

The treatment of MMA is complex and requires a multidisciplinary approach. Management strategies may include dietary modifications to reduce the intake of certain amino acids, supplementation with vitamin B12, and regular monitoring of metabolic parameters . In some cases, liver or kidney transplantation may be considered as a treatment option.

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