ADSL Human

Adenylosuccinate Lyase Human Recombinant
Cat. No.
BT6515
Source
Escherichia Coli.
Synonyms
Adenylosuccinate lyase, ASL, Adenylosuccinase, ASase, ADSL, AMPS.
Appearance
Sterile Filtered colorless solution.
Purity
Greater than 95.0% as determined by SDS-PAGE.
Usage
THE BioTek'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

ADSL Human Recombinant produced in E.coli is a single, non-glycosylated polypeptide chain containing 520 amino acids (1-484) and having a molecular mass of 59kDa.
ADSL is fused to a 36 amino acid His-tag at N-terminus & purified by proprietary chromatographic techniques.

Product Specs

Introduction
Adenylosuccinate lyase (ADSL) is an essential enzyme in the purine nucleotide cycle, facilitating the conversion of adenylosuccinate to AMP and fumarate. This enzyme plays a crucial role in both the de novo synthesis of purines and the generation of adenosine monophosphate from inosine monophosphate. Specifically, ADSL catalyzes two key reactions in AMP biosynthesis: the removal of fumarate from succinylaminoimidazole carboxamide ribotide (SAICA) to produce aminoimidazole carboxamide ribotide (AICA) and the removal of fumarate from adenylosuccinate to yield AMP. Defects in ADSL lead to adenylosuccinate lyase deficiency (ADSL deficiency), an autosomal recessive disorder. This deficiency is characterized by the accumulation of succinylaminoimidazole-carboxamide riboside (SAICA-riboside) and succinyladenosine (S-Ado) in bodily fluids. ADSL deficiency manifests as succinylpurinemic autism, psychomotor retardation, and, in some instances, growth retardation accompanied by muscle wasting and epilepsy.
Description
Recombinantly produced in E. coli, ADSL Human is a single, non-glycosylated polypeptide chain. It comprises 520 amino acids, with amino acids 1-484 corresponding to the ADSL protein, and has a molecular weight of 59 kDa. A 36 amino acid His-tag is fused to the N-terminus of the protein. Purification is achieved using proprietary chromatographic techniques.
Physical Appearance
A clear, colorless solution that has been sterilized by filtration.
Formulation
The ADSL solution is provided at a concentration of 1 mg/ml in a buffer consisting of 20 mM Tris-HCl (pH 8.0), 1 mM DTT, 40% glycerol, and 0.1 M NaCl.
Stability
For short-term storage (up to 2-4 weeks), store the ADSL solution at 4°C. For long-term storage, freeze the solution at -20°C. It is highly recommended to add a carrier protein such as HSA or BSA (0.1%) for extended storage. Repeated freezing and thawing should be avoided.
Purity
SDS-PAGE analysis indicates a purity greater than 95%.
Synonyms
Adenylosuccinate lyase, ASL, Adenylosuccinase, ASase, ADSL, AMPS.
Source
Escherichia Coli.
Amino Acid Sequence
MRGSHHHHHH GMASMTGGQQ MGRDLYDDDD KDRWGSMAAG GDHGSPDSYR SPLASRYASP EMCFVFSDRY KFRTWRQLWL WLAEAEQTLG LPITDEQIQE MKSNLENIDF KMAAEEEKRL RHDVMAHVHT FGHCCPKAAG IIHLGATSCY VGDNTDLIIL RNALDLLLPK LARVISRLAD FAKERASLPT LGFTHFQPAQ LTTVGKRCCL WIQDLCMDLQ NLKRVRDDLR FRGVKGTTGT QASFLQLFEG DDHKVEQLDK MVTEKAGFKR AFIITGQTYT RKVDIEVLSV LASLGASVHK ICTDIRLLAN LKEMEEPFEK QQIGSSAMPY KRNPMRSERC CSLARHLMTL VMDPLQTASV QWFERTLDDS ANRRICLAEA FLTADTILNT LQNISEGLVV YPKVIERRIR QELPFMATEN IIMAMVKAGG SRQDCHEKIR VLSQQAASVV KQEGGDNDLI ERIQVDAYFS PIHSQLDHLL DPSSFTGRAS QQVQRFLEEE VYPLLKPYES VMKVKAELCL.

Product Science Overview

Structure and Function

ASL is a homotetrameric enzyme, meaning it consists of four identical subunits . It catalyzes two key reactions in the de novo purine biosynthetic pathway:

  1. Conversion of Succinylaminoimidazole Carboxamide Ribotide (SAICAR) to Aminoimidazole Carboxamide Ribotide (AICAR): This reaction is part of the purine de novo synthesis pathway .
  2. Formation of AMP from Adenylosuccinate (S-AMP): This reaction occurs in the purine nucleotide cycle .

Both reactions involve the cleavage of fumarate from the substrate, utilizing an E1cb elimination reaction mechanism .

Genetic and Molecular Basis

The ADSL gene is located on chromosome 22 (22q13.1) in humans . The gene consists of 13 exons spanning approximately 23 kb . The promoter region of the ADSL gene exhibits typical features of a housekeeping gene, indicating its essential role in cellular metabolism .

Clinical Significance

ADSL deficiency is a rare genetic disorder characterized by psychomotor retardation and epilepsy . This condition results from mutations in the ADSL gene, leading to reduced enzyme activity. The severity of the clinical phenotype correlates with the level of residual enzyme activity . Accumulation of the enzyme substrates, succinylaminoimidazole-carboxamide riboside (SAICAr) and succinyladenosine (S-Ado), in the cerebrospinal fluid (CSF) of affected individuals is a hallmark of this disorder .

Recombinant ASL

Human recombinant ASL is produced using recombinant DNA technology, which involves cloning the ADSL gene into an expression vector and introducing it into a host organism, typically Escherichia coli . The recombinant enzyme is then purified for various applications, including research and therapeutic purposes.

Applications

Recombinant ASL is used in biochemical research to study purine metabolism and the effects of ADSL deficiency. It also has potential therapeutic applications in treating disorders related to purine metabolism .

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