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USA
- USA
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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 6 - Jul 11
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Description
CDK9/Cyclin K ProteinProduct Specification Species Human Accession P50750 O75909 Amino Acid Sequence M1 F372(CDK9) M1 S300(Cyclin KA) Expression System Baculovirus InsectCells Molecular Weight 69. 3 KDa 36. 9 KDa Conjugation Unconjugated Tag GST Tag, Flag Tag Physical Appearance Liquid Storage Buffer 20 mM HEPES (pH 7. 5), 200 mM NaCl, 5% glycerol, 1 mM DTT Stability & Storage 80C Guidelines For complete recovery, mix well and spin before use. Product must not be stored
Product Specification
| Species | Human |
| Accession | P50750、/O75909 |
| Amino Acid Sequence | M1-F372(CDK9) M1-S300(Cyclin KA) |
| Expression System | Baculovirus-InsectCells |
| Molecular Weight | 69.3 KDa/36.9 KDa |
| Conjugation | Unconjugated |
| Tag | GST Tag, Flag Tag |
| Physical Appearance | Liquid |
| Storage Buffer | 20 mM HEPES (pH 7.5), 200 mM NaCl, 5% glycerol, 1 mM DTT |
| Stability & Storage | -80°C |
Guidelines
·For complete recovery, mix well and spin before use. ·Product must not be stored in diluted solutions. ·Aliquots below 10ul are not advisable. ·Avoid repetitive freeze-thaw cycles!
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 2087 reviews
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Product Reviews
★★★★★ 3
Comes with pump
Color: Colorful, Size: Large
My dogs enjoyed it but it’s not large dog proof. I have a husky and German Shepard…..the ball lasted a day before it was torn up. But this would be perfect for smaller or medium sized dogs.
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Reviewed in the United States on March 27, 2026
★★★★★ 5
Great toy
Color: Colorful, Size: Medium
Best toy ever for my Aussie!
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Reviewed in the United States on May 31, 2026
★★★★★ 5
Our German Sheppard loves these
Size: Medium
These cost a bit more than tennis balls, but they are so much nicer and longer lasting. For starters, they stay cleaner than tennis balls because they’re smooth rubber. Dirt won’t build up on them and if anything does stick, like grass or soil, it falls off once the dog slobber dries. They’re also thick, so they don’t fall apart or blow out like a normal tennis ball does in our dog’s jaws after 30 seconds. Our GS chomps on these like crazy and the only damage they’ve suffered is a crack that developed from the edge of the hole, but the crack is growing very slowly and none of these balls have totally failed yet. The balls do whistle when thrown ant high speed and that may help a dog track and locate it, but I’m not sure. Our neighbors hear the whistling too so it’s far from silent. Lastly the orange ball is easy to locate out in our yard, but the dark blue practically disappears.
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Reviewed in the United States on April 6, 2025
★★★★★ 5
Great for smaller dogs
Size: Small
These two balls are perfect for the smaller mouthed dog that loves to play fetch.
These balls are not only super durable (lots of teeth biting), but float in the baby pool we use for our miniature dachshunds.
The value here is much better than you’d find anywhere else. The noise, if bitten hard enough, was “low” at best. Easy to spot/find if overthrown. Will definitely buy again once these are in bad repair; so far, so good-love these for my fur babies!
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Reviewed in the United States on October 8, 2024
★★★★★ 5
My dogs favorite balls
Size: Medium
These are great for my dog who always has to have a ball in her mouth. Not too hard so I don't have to worry about her teeth. They last for ever. They do lose their shape a little over time (like I said, she always has a ball in her mouth) they become a little oval in shape. They still bounce, she still chases it and she still chews on it so I don't think she notices or cares. I've gotten her a bag full of these over time and I have only seen one that she chewed a chunk out.
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Reviewed in the United States on September 28, 2023