HADA
Tocris Bioscience, part of Bio-Techne | Catalog # 6647
Key Product Details
| Description: | Blue fluorescent D-amino acid for labeling peptidoglycans in live bacteria |
| Chemical Name: | 3-[[(7-Hydroxy-2-oxo-2H-1-benzopyran-3-yl)carbonyl]amino]-D-alanine hydrocholoride |
| Purity: | ≥98% (HPLC) |
| Molecular Weight: | 328.71 |
Biological Activity for HADA
HADA is a fluorescent D-amino acid. Suitable for labeling peptidoglycans in live bacteria. Results in strong peripheral and septal labeling of diverse bacterial cell populations without affecting growth rates. Displays mitochondrial outer membrane permeability. Excitation/emission λ ~405/450 nm.
Optical Data for HADA
| Emission Color | Blue |
|---|---|
| λabs | 405 nm |
| λem | 450 nm |
| Extinction Coefficient (ε) | 36,700 M-1cm-1 |
| Application | Fluorescence Microscopy |
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Investigating mycobacteria cell wall formation using FDAA HADA. Investigating mycobacteria cell wall formation using fluorescent D-amino acid HADA. Image showing FDAA HADA incorporation in log-phase growth of WT, delta L,D-transpeptidases (LDT) and delta L,D-transpeptidases (LDT) comp cells. Scale = 5 μm. Baranowski et al show FDAAs are incorporated asymmetrically by L,D-transpeptidases. For more information on this work and to request full protocols read Baranowski et al (2018) Maturing Mycobacterium smegmatis peptidoglycan requires non-canonical crosslinks to maintain shape. Elife 16 e37516 PMID: 30324906 |
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Using FDAAs HADA and RADA to study peptidoglycan enzyme and substrate distribution, and the role of polar cell growth and peptidoglycan segregation over time. Image shows peptidoglycan segregation over time. Left to right - 2 mins HADA pulse (cyan), 45 min outgrowth, followed by 2 min RADA (Catalog # 6649) chase (magenta) in WT Msm cells. New cell wall (magenta), oldest cell wall (cyan). Scale = 5 μm. For more information on this work and to request full protocols please read García-Heredia et al (2018) Peptidoglycan precursor synthesis along the sidewall of pole-growing mycobacteria. Elife 10 e37243 PMID: 30198841 |
Plan Your Experiments
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