1415A
Permeabilized Fiber ATPase System – Microscope Mountable
The 1415A Permeabilized Fiber ATPase System is designed to enable physiology researchers to seamlessly measure permeabilized fiber mechanics and ATP consumption using an absorbance technique in a single, user-friendly package. It provides accurate measurements of fiber properties across a broad range of applications and tests. Performing a force-pCa experiment and combining it with energetics measurements is a breeze with our automatically indexing bath plate. Pre-program calcium concentrations and activation/relaxation sequences and let the 1415A system do the rest.
Included is a temperature controlled apparatus which includes XYZ micrometer stages with built-in mounts for our high-speed length controllers and force transducers. The bath controller features exclusive software with a programmable motion control sequencer for automated bath transfer of the fiber being studied. A laser diffraction system is also included for setting SL of cardiac tissue. The apparatus has an add-on ATPase cuvette that is used to measure ATP consumption. The ATPase cuvette includes optics to excite the fluorophores in solution with UV light and to quantify the absorbance of NADH from the bath using a photodetector. Also included are a high-speed length controller, precision force transducer, data acquisition hardware and our unique real-time Linux control and analysis software.
Our dedicated software includes a library of experimental protocols, simplifying the process and allowing easy measurement of both force and length. When combined with our optional HVSL sarcomere length measurement system the researcher can control and measure length, force, and sarcomere length. These advanced features allow researchers to completely characterize permeabilized fibers performing all of the standard tests including force-pCa, kTr, ATPase activity, length-tension, force-velocity and cross-bridge cycling kinetics.
The Aurora Scientific permeabilized fiber ATPase system is manufactured using corrosion resistant materials and can easily mount on a bench top or inverted microscope for basic observation or more sophisticated imaging.
Stories of Success
1415A – Measuring ATPase activity with High Resolution
CHALLENGE
In 2016 Aurora Scientific was approached by Dr. Pieter de Tombe and Dr. Ramzi Khairallah of Loyola University to partner on the development and commercialization of a new apparatus for making measurements of ATP consumption in permeabilized tissue. This initiative was in response to what was perceived to be a growing demand to make these measurements again after long period of sparse publication on the subject, and the disappearance of any commercial offerings for researchers without the means to construct their own system. Price was also a very important consideration as equipment available in the past did not have motorized movement of the bath plate and was equipped with expensive optics for the ATPase portion of the experiment.
SOLUTION
After many prototypes and iterations a version of the apparatus which could fit onto a typical inverted microscope was developed. Aurora was able to leverage their experience with precise motion control from the 802D fiber apparatus to develop a reliable and relatively inexpensive moving chamber while Dr’s de Tombe and Khairallah’s extensive knowledge of optics helped leverage new optical technologies available to achieve good ATP resolution much more cheaply than possible in the past.
RESULTS
We are very proud to present the 804A Permeabilized Fiber ATPase Apparatus which represents a true collaborative effort between industry and academia and the best of the spirit of scientific discovery. We are grateful for the efforts of all parties involved.
Select References
- DeWinter, Josine M. et al. “Troponin activator augments muscle force in nemaline myopathy patients with nebulin mutations.” Journal of Medical Genetics (2013) DOI: 10.1136/jmedgenet-2012-101470
- van der Pijl et al. “Titin-based mechanosensing modulates muscle hypertrophy” Journal of Cachexia, Sarcopenia and Muscle (2018) DOI: 10.1002/jcsm.12319
- Bennett et al. “RNA helicase, DDX27 regulates skeletal muscle growth and regeneration by modulation of translational processes” PLoS Genetics (2018) DOI: 10.1371/journal.pgen.1007226
- Garibaldi et al. “Novel ACTA1 mutation causes late-presenting nemaline myopathy with unusual dark cores” Neuromuscular Disorders (2021) DOI: 10.1016/j.nmd.2020.11.012
- Chung et al. “Myocardial relaxation is accelerated by fast stretch, not reduced afterload” Journal of Molecular and Cellular Cardiology (2017) DOI: 10.1016/j.yjmcc.2017.01.004
- Lee et al. “Mechanical Properties of Single Muscle Fibers: Understanding Poor Muscle Quality in Older Adults with Diabetes” Annals of Geriatric Medicine and Research (2020) DOI: 10.4235/agmr.20.0078
- Weidner at al. “Impact of lengthening velocity on the generation of eccentric force by slow-twitch muscle fibers in long stretches” Pflügers Archiv - European Journal of Physiology (2024) DOI: 10.1007/s00424-024-02991-4
- Hessel et al. “Fast myosin binding protein C knockout in skeletal muscle alters length-dependent activation and myofilament structure” Communications biology (2024) DOI: 10.1038/s42003-024-06265-8
- Davis, Jonathan P. et al. “Effects of thin and thick filament proteins on calcium binding and exchange with cardiac troponin C.” Biophysical Journal (2007) DOI: 10.1529/biophysj.106.095406
- Manders, Emmy et al. “Diaphragm weakness in pulmonary arterial hypertension: role of sarcomeric dysfunction.” American Journal of Physiology-Lung Cellular and Molecular Physiology (2012) DOI: 10.1152/ajplung.00135.2012
System Components
315D/322D: High-Speed Length Controllers
The 315D/322D High-Speed Length Controllers give physiologists the ability to control and measure length of single cells, fibers and whole muscle with ease.
Learn More400C: Force Transducers
The 400C series of force transducers is the next generation of our widely used 400A and 400B series. The 400C series enables contractile measurements from a variety of muscle types and sizes and are designed to meet the needs of muscle researchers.
Learn More600A: Real-Time Muscle Data Acquisition and Analysis System
The 600A Digital Controller serves to integrate components and provide the researcher control of system operations, data collection and signal analysis.
Learn More804A: Permeabilized Fiber ATPase Apparatus
The 804A ATPase apparatus was designed to enable physiology researchers to measure consumption of ATP along with contractile force and length changes of permeabilized fibers.
Learn More825B: TEC Controller / Thermometer
Thermometer and TEC Controller controls bath temperature from 0 to 40°C
Learn More901D: High-Speed Video Sarcomere Length
A simple, turn-key system for measuring sarcomere spacing in isolated muscle preparations.
Learn More902A: Laser Diode Sarcomere Length
A simple, easy to use laser diode system designed for measuring sarcomere length in thicker muscle fibres
Learn More608C: LCD Monitor
A 22” widescreen LCD monitor providing high quality visualization of data collection
Resources
Parts & Accessories
Model # | 1400A |
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901D | The High-Speed Video Sarcomere Length (HVSL) system provides high-speed, accurate sarcomere length measurement from a live video image. Our 901D HVSL system uses a high-resolution, USB 3.0 camera to provide full-frame images (1280×1024) at up to 300 frames per second. This frame rate increases to 3,000 frames per second when the camera is windowed down to 16 pixel lines. Image capture and sarcomere length data can be controlled by our 600A Digital Controller software which runs on a real-time Linux operating system. |
902A | Simple laser diffraction instrument consisting of a laser diode assembly and a SL target assembly. The laser diode mounts to a microscope port via a C-mount adapter (not provided). The SL target assembly mounts to the apparatus. The laser shines through an empty objective port on the microscope turret and passes through the tissue. The sarcomeres in the tissue diffract the laser and form a diffraction pattern on the SL target thus indicating the Sarcomere Length. The desired spacing is set visually and no recording is made. |
830A | Half-rack adapter that allows half-rack instruments to be mounted in standard 19” racking. Works with models: 315D/322D, 400C series, 701C and 825B. |
831A | Heavy gauge, steel desktop or shelf-top rack, with standard 19” width for any Aurora Scientific Instruments. Available in various heights. (6U high for 1200A and 1300A, 5U high for 1400A, 1500A and 1600A systems). |