Albumin is abundant and binds copper(II) tightly at a specific N-terminal site. In serum-containing culture medium it is present in quantity, which means an added copper complex enters a solution that already has a strong copper acceptor in it.
Whether the copper stays on the peptide, transfers to albumin, or reaches some equilibrium between them is a question about relative affinities and concentrations — not something that can be assumed from what was added to the tube.
EDTA appears in many buffers and media formulations and is a strong chelator. Free histidine binds copper. Even the buffer species itself can coordinate a metal in some systems.
A result obtained in one buffer is therefore not automatically reproducible in another, and a methods section that does not state the full composition has left out something that matters for a metal complex in a way it would not for a plain peptide.
Ask what was in the medium. Serum or serum-free, which buffer, whether any chelator was present. For copper work these are not housekeeping details; they are part of the experiment.
It is also why in vitro copper results can be harder to reproduce between laboratories than the apparent simplicity of the system suggests.
| Format | Strength | Price | Availability |
|---|---|---|---|
| GHK-Cu Duo Pack | 2 × 50 mg | AED 1090 | In stock |
Delivery is AED 40 flat and free on orders over AED 700. Payment is cash on delivery anywhere in the UAE, or USDT (TRC20) in advance, which takes 5% off the order total.
Albumin is abundant and binds copper(II) tightly at a specific N-terminal site. In serum-containing culture medium it is present in quantity, which means an added copper complex enters a solution that already has a strong copper acceptor in it.
No. REVIVE LAB UAE supplies research materials and provides no dosing, administration or protocol guidance of any kind. Every product is sold for laboratory research use only and is not for human or veterinary consumption.
Stock is held in Dubai. An order confirmed before 4 PM Dubai time is dispatched the same working day, reaching Dubai and Abu Dhabi the same day and the remaining emirates within 24 hours. Delivery is AED 40 flat and free over AED 700.
Supplied for laboratory research use only. Not for human or veterinary consumption. REVIVE LAB UAE provides no dosing, administration or protocol guidance.