Pristinamycin IA (Mikamycin B; Mikamycin IA)

Alias: Mikamycin B; Mikamycin IA

Cat No.:V5305 Purity: ≥98%

COA Product Data Instructions for use SDS

Pristinamycin IA (also known as Mikamycin B; Mikamycin IA), a naturally occuring and biologically active decapeptide isolated from the skin of the Australian frogHyla caerulea, is a novel and potent cholecystokinetic agent which acts as a cholecystokinin receptor agonist.

Pristinamycin IA (Mikamycin B; Mikamycin IA) Chemical Structure CAS No.: 3131-03-1
Product category: New6

This product is for research use only, not for human use. We do not sell to patients.

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Other Forms of Pristinamycin IA (Mikamycin B; Mikamycin IA):

Pristinamycin (Pristinamycine)

Official Supplier of:

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Purity & Quality Control Documentation

Current batch：

Purity: ≥98%

COA

MSDS

Instructions

Product Description
Bioactivity & Protocols
Physicochemical Properties
Solubility Data
Calculators
Biological Data

Product Description

Pristinamycin IA (also known as Mikamycin B; Mikamycin IA), a naturally occuring and biologically active decapeptide isolated from the skin of the Australian frog Hyla caerulea, is a novel and potent cholecystokinetic agent which acts as a cholecystokinin receptor agonist.

Biological Activity I Assay Protocols (From Reference)

ln Vitro	Pristinamycin IA (100 μM, 0–4 h) suppresses the disruption of [3H]vinblastine in Caco-2 cells [1]. Pristinamycin IA (4.614 μM) stimulates the ribosome-supporting ribose regulatory factor (LRR), and Pristinamycin IA (100 μM) and [3H]vinblastine rescue in Caco-2 cell monolayers [2].
References	[1]. Interaction of pristinamycin IA with P-glycoprotein in human intestinal epithelial cells. Eur J Pharmacol. 1995 Jan 16;288(2):187-92. [2]. Attenuator LRR - a regulatory tool for modulating gene expression in Gram-positive bacteria. Microb Biotechnol. 2021 Nov;14(6):2538-2551.
Additional Infomation	Pristinamycin IA is a cyclodepsipeptide that is (together with pristinamycin IIA) a component of pristinamycin, an oral streptogramin antibiotic produced by Streptomyces pristinaespiralis. Pristinamycin exhibits bactericidal activity against Gram positive organisms including methicillin-resistant Staphylococcus aureus. It has a role as an antibacterial drug, an antimicrobial agent and a bacterial metabolite. Pristinamycin IA has been reported in Streptomyces pristinaespiralis with data available. A specific streptogramin group B antibiotic produced by Streptomyces graminofaciens and other bacteria.

These protocols are for reference only. InvivoChem does not independently validate these methods.

Physicochemical Properties

Molecular Formula	C45H54N8O10
Molecular Weight	866.957860000001
Exact Mass	866.396
CAS #	3131-03-1
Related CAS #	Pristinamycin;270076-60-3
PubChem CID	11136668
Appearance	Light yellow to yellow solid powder
Density	1.38g/cm3
Boiling Point	1202.1ºC at 760mmHg
Flash Point	680.8ºC
LogP	2.132
Hydrogen Bond Donor Count	4
Hydrogen Bond Acceptor Count	12
Rotatable Bond Count	7
Heavy Atom Count	63
Complexity	1700
Defined Atom Stereocenter Count	7
InChi Key	YGXCETJZBDTKRY-UHFFFAOYSA-N
InChi Code	InChI=1S/C45H54N8O10/c1-6-31-42(59)52-22-11-14-32(52)43(60)51(5)34(24-27-16-18-29(19-17-27)50(3)4)44(61)53-23-20-30(54)25-33(53)39(56)49-37(28-12-8-7-9-13-28)45(62)63-26(2)36(40(57)47-31)48-41(58)38-35(55)15-10-21-46-38/h7-10,12-13,15-19,21,26,31-34,36-37,55H,6,11,14,20,22-25H2,1-5H3,(H,47,57)(H,48,58)(H,49,56)
Chemical Name	N-[3-[[4-(dimethylamino)phenyl]methyl]-12-ethyl-4,16-dimethyl-2,5,11,14,18,21,24-heptaoxo-19-phenyl-17-oxa-1,4,10,13,20-pentazatricyclo[20.4.0.06,10]hexacosan-15-yl]-3-hydroxypyridine-2-carboxamide
Synonyms	Mikamycin B; Mikamycin IA
HS Tariff Code	2934.99.9001
Storage	Powder -20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month
Shipping Condition	Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)

Solubility Data

Solubility (In Vitro)	DMSO : ~33.33 mg/mL (~38.44 mM)
Solubility (In Vivo)	Solubility in Formulation 1: ≥ 3 mg/mL (3.46 mM) (saturation unknown) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 30.0 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL. Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution. Solubility in Formulation 2: ≥ 3 mg/mL (3.46 mM) (saturation unknown) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 30.0 mg/mL clear DMSO stock solution to 900 μL of 20% SBE-β-CD physiological saline solution and mix evenly. Preparation of 20% SBE-β-CD in Saline (4°C，1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution. View More Solubility in Formulation 3: ≥ 3 mg/mL (3.46 mM) (saturation unknown) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 30.0 mg/mL clear DMSO stock solution to 900 μL of corn oil and mix evenly. (Please use freshly prepared in vivo formulations for optimal results.)

Solubility (In Vitro)

DMSO : ~33.33 mg/mL (~38.44 mM)

Solubility (In Vivo)

Solubility in Formulation 1: ≥ 3 mg/mL (3.46 mM) (saturation unknown) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 30.0 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL.
Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution.

Solubility in Formulation 2: ≥ 3 mg/mL (3.46 mM) (saturation unknown) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 30.0 mg/mL clear DMSO stock solution to 900 μL of 20% SBE-β-CD physiological saline solution and mix evenly.
Preparation of 20% SBE-β-CD in Saline (4°C，1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution.

View More

Solubility in Formulation 3: ≥ 3 mg/mL (3.46 mM) (saturation unknown) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 30.0 mg/mL clear DMSO stock solution to 900 μL of corn oil and mix evenly.

(Please use freshly prepared in vivo formulations for optimal results.)

Preparing Stock Solutions		1 mg	5 mg	10 mg
	1 mM	1.1535 mL	5.7673 mL	11.5346 mL
	5 mM	0.2307 mL	1.1535 mL	2.3069 mL
	10 mM	0.1153 mL	0.5767 mL	1.1535 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.

Calculator

Mass

Concentration

Volume

Molecular Weight*

Molarity Calculator allows you to calculate the mass, volume, and/or concentration required for a solution, as detailed below:

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See Example

An example of molarity calculation using the molarity calculator is shown below:
What is the mass of compound required to make a 10 mM stock solution in 5 ml of DMSO given that the molecular weight of the compound is 350.26 g/mol?

Enter 350.26 in the Molecular Weight (MW) box
Enter 10 in the Concentration box and choose the correct unit (mM)
Enter 5 in the Volume box and choose the correct unit (mL)
Click the “Calculate” button
The answer of 17.513 mg appears in the Mass box. In a similar way, you may calculate the volume and concentration.

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Dilution Calculator allows you to calculate how to dilute a stock solution of known concentrations. For example, you may Enter C1, C2 & V2 to calculate V1, as detailed below:

What volume of a given 10 mM stock solution is required to make 25 ml of a 25 μM solution?
Using the equation C1V1 = C2V2, where C1=10 mM, C2=25 μM, V2=25 ml and V1 is the unknown:

Enter 10 into the Concentration (Start) box and choose the correct unit (mM)
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Enter 25 into the Volume (End) box and choose the correct unit (mL)
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The answer of 62.5 μL (0.1 ml) appears in the Volume (Start) box

Molecular formula

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Molecular Weight Calculator allows you to calculate the molar mass and elemental composition of a compound, as detailed below:

Note: Chemical formula is case sensitive: C12H18N3O4 c12h18n3o4
Instructions to calculate molar mass (molecular weight) of a chemical compound:

To calculate molar mass of a chemical compound, please enter the chemical/molecular formula and click the “Calculate’ button.

Definitions of molecular mass, molecular weight, molar mass and molar weight:

Molecular mass (or molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12)
Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.

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Reconstitution Calculator allows you to calculate the volume of solvent required to reconstitute your vial.

Enter the mass of the reagent and the desired reconstitution concentration as well as the correct units
Click the “Calculate” button
The answer appears in the Volume (to add to vial) box

In vivo Formulation Calculator (Clear solution)

Step 1: Enter information below (Recommended: An additional animal to make allowance for loss during the experiment)

Dosage mg/kg

Average weight of animals g

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Step 2: Enter in vivo formulation (This is only a calculator, not the exact formulation for a specific product. Please contact us first if there is no in vivo formulation in the solubility section.)

% DMSO

% Tween 80

% ddH₂O

Calculation results

Working concentration： mg/mL；

Method for preparing DMSO stock solution： mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.

Method for preparing in vivo formulation:：Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH₂O，mix and clarify.

Note： (1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
(2) Be sure to add the solvent(s) in order.

Biological Data

Attenuator LRR is of good regulatory performance.A. Regulation mechanism of the attenuator LRR. LRR forms a terminator structure under no antibiotic condition, which inhibits the transcription of lacZ mRNA and generates short transcripts. In the presence of antibiotics, ribosome stalling induced by antibiotics results in the formation of an anti‐terminator structure of LRR. Consequently, the expression of lacZ is increased obviously.B. Antibiotics induce LacZ expression. NA, no antibiotics; Tet, tetracycline (1 μg ml−1, 2.25 μM); Vgm, virgimycin M (1 μg ml−1, 1.903 μM); Rap, rapamycin (8 μg ml−1, 8.751 μM); Lin, lincomycin (4 μg ml−1, 9.839 μM); Pnm, pristinamycin IA (4 μg ml−1, 4.614 μM); Cam, chloramphenicol (1 μg ml−1, 3.095 μM); Lnz, linezolid (0.2 μg ml−1, 0.593 μM); Tel, telithromycin (2.5 μg ml−1, 3.079 μM); Kan, kanamycin (2 μg ml−1, 3.433 μM); Rtm, retapamulin (0.5 μg ml−1, 0.965 μM); Van, vancomycin (1.5 μg ml−1, 1.01 μM). The numbers above the columns are the fold change induced by antibiotics. The fold change was calculated by dividing the Miller units under antibiotic conditions by the Miller units under no antibiotic condition.[2].Attenuator LRR - a regulatory tool for modulating gene expression in Gram-positive bacteria. Microb Biotechnol. 2021 Nov;14(6):2538-2551.