SAE0152
Lisozima
free of DNA contaminants, suitable for Microbiome research, lyophilized powder, protein ≥90%, ≥40,000 units/mg protein
Sinonimo/i:
Mucopeptide N-acetilmuramoil idrolasi, Muramidasi
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About This Item
Numero CAS:
Numero MDL:
Codice UNSPSC:
12352204
Prodotti consigliati
Origine biologica
chicken egg white
Livello qualitativo
Forma fisica
powder
Attività specifica
≥40000 units/mg protein
PM
single-chain 14.3 kDa
Caratteristiche
DNA free
tecniche
cell based assay: suitable
Compatibilità
suitable for cell lysis
applicazioni
cell analysis
Condizioni di spedizione
wet ice
Temperatura di conservazione
−20°C
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Descrizione generale
Purified Lysozyme DNA free SAE0152 undergoes strict quality control testing to ensure the absence of detectable levels of contaminating DNA using 35 cycles PCR amplification of 16S and 18S rDNA using universal primer sets.
Lysozyme is a single chain polypeptide of 129 amino acids cross-linked with four disulfide bridges.1 It hydrolyzes b(1à 4) linkages between N-acetylmuraminic acid and N-acetyl-D-glucosamine residues in peptidoglycan and between N-acetyl-D-glucosamine residues in chitodextrin.2,3,4 The enzyme is often used for lysing bacterial cells by hydrolyzing the peptidoglycan present in the cell walls. Gram-positive cells are quite susceptible to this hydrolysis as their cell walls have a high proportion of peptidoglycan. Gram-negative bacteria are less susceptible due to the presence of an outer membrane and a lower proportion of peptidoglycan.
The enzyme is active over a broad pH range (6.0-9.0).
Lysozyme activity: ≥40,000 units/mg protein.
For isolation of nucleic acids, lysozyme has been used in the lysis peptidoglycan layer of bacterial cell walls.
The study of microbial communities has been revolutionized in recent years by the widespread adoption of culture independent analytical techniques such as 16S rRNA gene sequencing and metagenomics. Since DNA contamination during sample preparation is a major problem of these sequence-based approaches, DNA extraction reagents free of DNA contaminates are essential. This purified lysozyme preparation (SAE0152) is purified from chicken egg white, crystallized three times, dialyzed, and supplied as a lyophilized powder. Protein content by UV absorbance is ≥ 90% with the remainder (∼10%) being buffer salts such as sodium acetate and sodium chloride, and undergoes strict quality control testing to ensure the absence of detectable levels of contaminating DNA using 35 cycles PCR amplification of 16S and 18S rDNA using universal primer sets.
Lysozyme is a single chain polypeptide of 129 amino acids cross-linked with four disulfide bridges.1 It hydrolyzes b(1à 4) linkages between N-acetylmuraminic acid and N-acetyl-D-glucosamine residues in peptidoglycan and between N-acetyl-D-glucosamine residues in chitodextrin.2,3,4 The enzyme is often used for lysing bacterial cells by hydrolyzing the peptidoglycan present in the cell walls. Gram-positive cells are quite susceptible to this hydrolysis as their cell walls have a high proportion of peptidoglycan. Gram-negative bacteria are less susceptible due to the presence of an outer membrane and a lower proportion of peptidoglycan.
The enzyme is active over a broad pH range (6.0-9.0).
Lysozyme activity: ≥40,000 units/mg protein.
For isolation of nucleic acids, lysozyme has been used in the lysis peptidoglycan layer of bacterial cell walls.
The study of microbial communities has been revolutionized in recent years by the widespread adoption of culture independent analytical techniques such as 16S rRNA gene sequencing and metagenomics. Since DNA contamination during sample preparation is a major problem of these sequence-based approaches, DNA extraction reagents free of DNA contaminates are essential. This purified lysozyme preparation (SAE0152) is purified from chicken egg white, crystallized three times, dialyzed, and supplied as a lyophilized powder. Protein content by UV absorbance is ≥ 90% with the remainder (∼10%) being buffer salts such as sodium acetate and sodium chloride, and undergoes strict quality control testing to ensure the absence of detectable levels of contaminating DNA using 35 cycles PCR amplification of 16S and 18S rDNA using universal primer sets.
Applicazioni
- Lysozyme is used for the extraction of genomic DNA from bacterial cells.
- Lysozyme is used as an external standard for MALDI-TOF (matrix assisted laser desorption ionization-time of flight) mass analysis.
- Lysonzyme is used to prepare spheroplasts.
L'enzima rompe le pareti cellulari dei batteri; è utilizzato per preparare gli sferoplasti.
Azioni biochim/fisiol
Il lisozima idrolizza i legami β(1→4) tra l′ acido N-acetilmurammico e i residui di N-acetil-D-glucosammina nel peptidoglicano e tra i residui di N-acetyl-D-glucosammina nella chitodestrina. Le cellule Gram-positive sono molto sensibili a questa idrolisi poiché le loro pareti cellulari hanno un'elevata percentuale di peptidoglicano. I batteri Gram-negativi sono meno sensibili in quanto posseggono una membrana esterna e hanno una percentuale inferiore di peptidoglicano. Tuttavia, queste cellule possono essere idrolizzate in presenza di EDTA che chela gli ioni metallici nella membrana esterna.
L'enzima è attivo in un ampio intervallo di pH (da 6,0 a 9,0). A pH 6,2, l'attività massima si osserva su una gamma più ampia di forze ioniche (da 0,02 a 0,100 M) rispetto a pH 9,2 (da 0,01 a 0,06 M).
L'enzima è attivo in un ampio intervallo di pH (da 6,0 a 9,0). A pH 6,2, l'attività massima si osserva su una gamma più ampia di forze ioniche (da 0,02 a 0,100 M) rispetto a pH 9,2 (da 0,01 a 0,06 M).
Caratteristiche e vantaggi
Purified Lysozyme free SAE0152 undergoes strict quality control testing to ensure it will be Free of DNA contaminants, suitable for Microbiome research.
The study of microbial communities has been revolutionized in recent years by the widespread adoption of culture independent analytical techniques such as 16S rRNA gene sequencing and metagenomics. Since DNA contamination during sample preparation is a major problem of these sequence-based approaches, DNA extraction reagents free of DNA contaminates are essential.
The study of microbial communities has been revolutionized in recent years by the widespread adoption of culture independent analytical techniques such as 16S rRNA gene sequencing and metagenomics. Since DNA contamination during sample preparation is a major problem of these sequence-based approaches, DNA extraction reagents free of DNA contaminates are essential.
Definizione di unità
One unit will produce a change in A450 of 0.001 per minute at pH 6.24 at 25 °C, using a suspension of Micrococcus lysodeikticus as substrate, in a 2.6 ml reaction mixture (1 cm light path).
Avvertenze
Danger
Indicazioni di pericolo
Consigli di prudenza
Classi di pericolo
Resp. Sens. 1
Codice della classe di stoccaggio
11 - Combustible Solids
Classe di pericolosità dell'acqua (WGK)
WGK 3
Punto d’infiammabilità (°F)
Not applicable
Punto d’infiammabilità (°C)
Not applicable
Certificati d'analisi (COA)
Cerca il Certificati d'analisi (COA) digitando il numero di lotto/batch corrispondente. I numeri di lotto o di batch sono stampati sull'etichetta dei prodotti dopo la parola ‘Lotto’ o ‘Batch’.
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