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[ CAS No. 367-93-1 ] {[proInfo.proName]}

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Chemical Structure| 367-93-1
Chemical Structure| 367-93-1
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Alexa F.?Van Voorhis ; ?ProfileRebecca S.?Sherbo ; DOI:

Abstract: X. autotrophicus is a metabolically flexible microorganism with two key features: 1) The organism has adapted to grow on a wide variety of carbon sources including CO2, methanol, formate, propylene, haloalkanes and haloacids; and 2) X. autotrophicus was the first chemoautotroph identified that could also simultaneously fix N2, meaning the organism can utilize CO2, N2, and H2 for growth. This metabolic flexibility has enabled use of X. autotrophicus for gas fixation, the creation of fertilizers and foods from gases, and the dehalogenation of environmental contaminants. Despite the wide variety of applications that have already been demonstrated for this organism, there are few genetic tools available to explore and exploit its metabolism. Here, we report a genetic toolbox for use in X. autotrophicus. We first identified suitable origins of replication and quantified their copy number, and identified antibiotic resistance cassettes that could be used as selectable markers. We then tested several constitutive and inducible promoters and terminators and quantified their promoter strengths and termination efficiencies. Finally, we demonstrated that gene expression tools remain effective under both autotrophic and dehalogenative metabolic conditions to show that these tools can be used in the environments that make X. autotrophicus unique. Our extensive characterization of these tools in X. autotrophicus will enable genetic and metabolic engineering to optimize production of fertilizers and foods from gases, and enable bioremediation of halogenated environmental contaminants.

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Chen, Zhou ; Zakrzewska, Sandra ; Hajare, Holly S. , et al. DOI: PubMed ID:

Abstract: Anuran saxiphilins (Sxphs) are “toxin sponge” proteins thought to prevent the lethal effects of small-molecule neurotoxins through sequestration. Here, we present a protocol for the expression, purification, and characterization of Sxphs. We describe steps for using thermofluor, fluorescence polarization, and isothermal titration calorimetry assays that probe Sxph:saxitoxin interactions using a range of sample quantities. These assays are generalizable and can be used for other paralytic shellfish poisoning toxin-binding proteins.

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Bennett, Brittany D ; Meier, David AO ; Lanclos, V Celeste , et al. DOI:

Abstract: SAR11 bacteria (order Pelagibacterales) are oligotrophs and often the most abundant bacterioplankton in aquatic environments. A subset of sequenced SAR11 genomes, predominantly in the brackish and freshwater SAR11 subclades, contain homologs of pha genes, which in other organisms confer the ability to store carbon and energy via polyhydroxyalkanoate (PHA) polymers. Here, we investigated the relevance of PHA production to SAR11 biology. Phylogenetics showed that Pha proteins occurred on a long branch and provided evidence for origin at the common ancestor of the brackish IIIa and freshwater LD12 subclades, followed by horizontal transfer within SAR11. Using the LD12 representative "Candidatus Fonsibacter ubiquis" strain LSUCC0530, we found that a large minority of LSUCC0530 cells contained a single Nile red-staining granule, confirmed that the cells produced polyhydroxybutyrate (PHB), and estimated the total PHB content in the cells. We heterologously expressed the LSUCC0530 phaCAB locus in Escherichia coli, finding it to be functional and the likely origin of the PHB. We also determined that, irrespective of changes to carbon, nitrogen, and phosphorus concentrations, a similar fraction of LSUCC0530 cells generated PHB granules and expression of the phaCAB locus remained constant. We suggest that PHB synthesis in LSUCC0530 may be constitutively active due to the slow growth dynamics and minimal regulation that characterize SAR11 bacteria. This is the first characterization of polymer storage in SAR11, providing new insights into the likely fitness advantage for cells harboring this metabolism.

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Product Details of [ 367-93-1 ]

CAS No. :367-93-1 MDL No. :MFCD00063273
Formula : C9H18O5S Boiling Point : -
Linear Structure Formula :- InChI Key :BPHPUYQFMNQIOC-NXRLNHOXSA-N
M.W : 238.30 Pubchem ID :656894
Synonyms :
Chemical Name :(2R,3R,4S,5R,6S)-2-(Hydroxymethyl)-6-(isopropylthio)tetrahydro-2H-pyran-3,4,5-triol

Calculated chemistry of [ 367-93-1 ]      Expand+

Physicochemical Properties

Num. heavy atoms : 15
Num. arom. heavy atoms : 0
Fraction Csp3 : 1.0
Num. rotatable bonds : 3
Num. H-bond acceptors : 5.0
Num. H-bond donors : 4.0
Molar Refractivity : 56.59
TPSA : 115.45 ?2

Pharmacokinetics

GI absorption : High
BBB permeant : No
P-gp substrate : Yes
CYP1A2 inhibitor : No
CYP2C19 inhibitor : No
CYP2C9 inhibitor : No
CYP2D6 inhibitor : No
CYP3A4 inhibitor : No
Log Kp (skin permeation) : -8.65 cm/s

Lipophilicity

Log Po/w (iLOGP) : 1.87
Log Po/w (XLOGP3) : -1.26
Log Po/w (WLOGP) : -1.07
Log Po/w (MLOGP) : -1.34
Log Po/w (SILICOS-IT) : -0.79
Consensus Log Po/w : -0.52

Druglikeness

Lipinski : 0.0
Ghose : None
Veber : 0.0
Egan : 0.0
Muegge : 0.0
Bioavailability Score : 0.55

Water Solubility

Log S (ESOL) : -0.33
Solubility : 113.0 mg/ml ; 0.472 mol/l
Class : Very soluble
Log S (Ali) : -0.67
Solubility : 51.2 mg/ml ; 0.215 mol/l
Class : Very soluble
Log S (SILICOS-IT) : 1.1
Solubility : 2990.0 mg/ml ; 12.5 mol/l
Class : Soluble

Medicinal Chemistry

PAINS : 0.0 alert
Brenk : 0.0 alert
Leadlikeness : 1.0
Synthetic accessibility : 4.78

Safety of [ 367-93-1 ]

Signal Word:Warning Class:N/A
Precautionary Statements:P261-P305+P351+P338 UN#:N/A
Hazard Statements:H315-H319-H335 Packing Group:N/A
GHS Pictogram:
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