Ranatuerin-2DR precursor
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Ranatuerin-2DR precursor

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Ranatuerin-2DR precursor is an antimicrobial peptide found in Rana draytonii (California red-legged frog), and has antimicrobial activity.

Category
Functional Peptides
Catalog number
BAT-011409
Molecular Formula
C143H248N38O41S3
Molecular Weight
3251.91
IUPAC Name
(5S,8S,11S,14R,17S,20S,23S,26S,29S,32S,35S,41S,44S,47S,50S,53S,56S,62S,65S,68S,74S,77S,80S,83S)-47-(2-amino-2-oxoethyl)-83-((S)-2-((2S,3S)-2-(2-aminoacetamido)-3-methylpentanamido)-4-(methylthio)butanamido)-11,17,35,50,62,74-hexakis(4-aminobutyl)-77-benzyl-68-((S)-sec-butyl)-23-(2-carboxyethyl)-26-(carboxymethyl)-5,80-bis((R)-1-hydroxyethyl)-20,29,32,44-tetraisobutyl-56-isopropyl-14-(mercaptomethyl)-41,53,65-trimethyl-8-(2-(methylthio)ethyl)-4,7,10,13,16,19,22,25,28,31,34,37,40,43,46,49,52,55,58,61,64,67,70,73,76,79,82-heptacosaoxo-3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57,60,63,66,69,72,75,78,81-heptacosaazapentaoctacontanedioic acid
Synonyms
Gly-Ile-Met-Asp-Thr-Phe-Lys-Gly-Ile-Ala-Lys-Gly-Val-Ala-Lys-Asn-Leu-Ala-Gly-Lys-Leu-Leu-Asp-Glu-Leu-Lys-Cys-Lys-Met-Thr-Gly
Appearance
Powder
Purity
≥96%
Sequence
GIMDTFKGIAKGVAKNLAGKLLDELKCKMTG
Storage
Store at -20°C
1. Hematogones: an overview
S P Chantepie, E Cornet, V Salaün, O Reman Leuk Res. 2013 Nov;37(11):1404-11. doi: 10.1016/j.leukres.2013.07.024. Epub 2013 Aug 8.
Hematogones were initially described as mysterious cells in bone marrow smears more than 70 years ago. These cells are normal bone marrow B-lymphocyte precursors with properties that overlap those of lymphoblasts. Their morphological and immunological features are described here with an update on the knowledge of hematogones in hematological and non-hematological disorders.
2. Precursor/product antiport in bacteria
B Poolman Mol Microbiol. 1990 Oct;4(10):1629-36. doi: 10.1111/j.1365-2958.1990.tb00539.x.
Many microorganisms metabolize their substrates (precursors) only partially and excrete the products of the metabolism into the medium. Although uptake of precursor and exit of product can proceed as two independent steps, there is increasing evidence that these processes are often linked and that transport is facilitated by a single antiport mechanism. Features of antiport mechanisms and advantages for the organism of catalysing precursor/product antiport will be illustrated by discussing a number of well-characterized systems. Based on precursor-product conversion stoichiometries, structural relatedness between precursors and products, and energetic and kinetic considerations, new examples of antiport systems will be proposed.
3. What Constitutes a Gluconeogenic Precursor?
Mark A Tetrick, Jack Odle J Nutr. 2020 Sep 1;150(9):2239-2241. doi: 10.1093/jn/nxaa166.
A gluconeogenic precursor is a biochemical compound acted on by a gluconeogenic pathway enabling the net synthesis of glucose. Recognized gluconeogenic precursors in fasting placental mammals include glycerol, lactate/pyruvate, certain amino acids, and odd-chain length fatty acids. Each of these precursors is capable of contributing net amounts of carbon to glucose synthesis via the tricarboxylic acid cycle (TCA cycle) because they are anaplerotic, that is, they are able to increase the pools of TCA cycle intermediates by the contribution of more carbon than is lost via carbon dioxide. The net synthesis of glucose from even-chain length fatty acids (ECFAs) in fasting placental mammals, via the TCA cycle alone, is not possible because equal amounts of carbon are lost via carbon dioxide as is contributed from fatty acid oxidation via acetyl-CoA. Therefore, ECFAs do not meet the criteria to be recognized as a gluconeogenic precursor via the TCA cycle alone. ECFAs are gluconeogenic precursors in organisms with a functioning glyoxylate cycle, which enables the net contribution of carbon to the intermediates of the TCA cycle from ECFAs and the net synthesis of glucose. The net conversion of ECFAs to glucose in fasting placental mammals via C3 metabolism of acetone may be a competent though inefficient metabolic path by which ECFA could be considered a gluconeogenic precursor. Defining a substrate as a gluconeogenic precursor requires careful articulation of the definition, organism, and physiologic conditions under consideration.
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