The Study
Cooperative Binding of Substrate and Ions Drives Forward Cycling of the Human Creatine Transporter-1
This study is like taking apart a toy car to see how its gears work inside — it tells us how the creatine transporter might move creatine in a test tube, but it doesn’t tell us if it works the same way in your muscles or brain.
Analysis score
Maximum 0 for a computational/algorithm study.
Where the score came from
Your muscles use a special door (CRT-1) to let in creatine, which helps make energy. This door only opens when sodium and salt ions are around, and once inside, creatine gets stuck inside because the door locks it in — but too much creatine inside would clog the door, so muscles need another door to let some out.
Where does this study sit?
Systematic Reviews & Meta-analyses
Max 100Randomized Trials
Max 90Cohort Studies
Max 72Case-Control
Max 58Cross-Sectional
Max 44Case Reports & Series
Max 30Expert Opinion
Max 50 / 100
Quality score
Based on clinical experience or non-systematic literature reviews. The lowest level of evidence as they are most susceptible to bias and personal perspective.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Yes — this explains why creatine builds up to high levels in muscles and brain, making it effective for energy storage and why supplements work.
- 2Creatine uptake requires 2 sodium ions and 1 chloride ion per molecule; intracellular creatine affinity drops 500-fold after entry; extracellular creatine is ~0.03–0.1 mM, intracellular is ~5–7 mM.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Frontiers in Physiology
Year
2022
Authors
Clemens V. Farr, Ali El‐Kasaby, F. Erdem, S. Sucic, M. Freissmuth, W. Sandtner
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.