SKU: 50874791750

NPC1 His Tag Protein, Human

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Description

NPC1 His Tag Protein, HumanProduct Specification Species Human Synonyms NPC1, NPC Protein Accession O15118 1 Amino Acid Sequence Arg372 Phe622, with N terminal His Expression System HEK293 Molecular Weight 40 50 kDa (Reducing) Purity 95% by SDS PAGE & >95% by SEC HPLC Endotoxin <0. 1EU g Conjugation Unconjugated Tag His Tag Physical Appearance Lyophilized Powder Storage Buffer PBS, pH7. 4,5% trehalose Reconstitution Reconstitute at 0. 1 1 mg ml according to the size in

Product Specification


Species Human
Synonyms NPC1, NPC Protein
Accession O15118-1
Amino Acid Sequence Arg372-Phe622, with N-terminal His
Expression System HEK293
Molecular Weight 40-50 kDa (Reducing)
Purity >95% by SDS-PAGE & >95% by SEC-HPLC
Endotoxin <0.1EU/μg
Conjugation Unconjugated
Tag His Tag
Physical Appearance Lyophilized Powder
Storage Buffer PBS, pH7.4,5% trehalose
Reconstitution Reconstitute at 0.1-1 mg/ml according to the size in ultrapure water after rapid centrifugation.
Stability & Storage · 12 months from date of receipt, lyophilized powder stored at -20 to -80℃.
· 3 months, -20 to -80℃ under sterile conditions after reconstitution.
· 1 week, 2 to 8℃ under sterile conditions after reconstitution.
· Please avoid repeated freeze-thaw cycles.
Reference

J P Davies, Y A Ioannou. Dupilumab for the treatment of asthma. Topological analysis of Niemann-Pick C1 protein reveals that the membrane orientation of the putative sterol-sensing domain is identical to those of 3-hydroxy-3-methylglutaryl-CoA reductase and sterol regulatory element binding protein cleavage-activating protein.J Biol Chem. 2000 Aug 11;275(32):24367-74.

Background

The Niemann-Pick C1 (NPC1) protein is predicted to be a polytopic glycoprotein, and it contains a region with extensive homology to the sterol-sensing domains (SSD) of 3-hydroxy-3-methylglutaryl-coenzyme A reductase (HMG-R) and sterol regulatory element binding protein cleavage-activating protein (SCAP). To aid the functional characterization of NPC1, a model of NPC1 topology was evaluated by expression of epitope-tagged NPC1 proteins and investigation of epitope accessibility in selectively permeabilized cells. These results were further confirmed by expression of NPC1 and identification of glycosylated domains that are located in the lumen of the endoplasmic reticulum. Our data indicate that this glycoprotein contains 13 transmembrane domains, 3 large and 4 small luminal loops, 6 small cytoplasmic loops, and a cytoplasmic tail. Furthermore, our data show that the putative SSD of NPC1 is oriented in the same manner as those of HMG-R and SCAP, providing strong evidence that this domain is functionally important.

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SKU: 50874791750

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4.5 ★★★★★
Based on 22 reviews
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Verified Purchase
Britney R.
Natrona Heights, US
★★★★★ 4
Cute for a puppy or small dog- not meant for chewers
Color: Octopus Purple & Blue, Color: Octopus Purple & Blue
I bought this cute squid two-pack as Christmas toys for two dogs, and they’re absolutely adorable. The colors are bright and fun, and the crinkle sound inside is very appealing especially to the puppy I was buying for. They are a little smaller than I expected, but I added a photo with my hand in it for size reference. The size ended up being perfect for our 12-week-old Irish Setter/Golden Retriever mix. He loves grabbing the tentacles and flinging it around. It’s easy for him to hold, shake, and carry, which makes it a great puppy toy. I also have a German Shorthaired Pointer, and it’s definitely not big enough or sturdy enough for her, she doesn’t really play with it. But for a puppy or small dog, it’s ideal. The Tupac is ideal, but losing one star just for durability and size.
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Reviewed in the United States on February 21, 2026
L
Verified Purchase
Linda Lou
Bozeman, US
★★★★★ 5
Lasted longer than I expected! But Still going...
Color: Octopus Yellow & Green
My dog was hesitant at first, which was strange because he loves the squeaker toys. would smell them and then walk away (I think it had a manufacturing smell) but after a few hours of airing out the fight (Playing) was on! Lasted longer than I expected! the squeak was gone from one of them but somehow, he managed to get it working again. normally he would chew the guts out to get to the squeaking piece, but they are surprisingly both still in tacked! and also, he refuses to share with his big brother even though he has two of them!
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Reviewed in the United States on December 30, 2025
A
Verified Purchase
Amazing Customer
Louisville, US
★★★★★ 3
Another one bites the dust!
Color: Octopus Purple & Blue
Good toy, but nothing spectacular. Took my 10 month old girl less than a day to kill the squeaker lol. Item is still intact meaning its not shredded but once squeaker dies she's pretty much done with it.
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Reviewed in the United States on December 20, 2025
D
Verified Purchase
Danyelle
Draper, US
★★★★★ 5
My dog's obsession
Color: Octopus Yellow & Green
My dog has been obsessed with these since he was a puppy. I started buying them in 6 packs. He chews is after each meal like dental floss and it's always soggy and gross. I keep an eye on the legs and throw it away when he begins to chew through them. One lasts him a couple months (80 pound Lab).
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Reviewed in the United States on May 28, 2026
T
Verified Purchase
Tricia S.
Lexington, US
★★★★★ 5
Great for treats
Color: Octopus Purple & Blue
We purchased this to keep our dog busy and engaged. He seems to enjoy it. We placed 1 or 2 treats in the tentacles and then loosely tie them. He can not untie them but can still manage to get the treats out. It amuses him for 10-12 minutes which is great. Only downside I can see is that the octopus is going to get grungy soon because of the treats and the treats and the constant licking to remove them. Not sure how it will washup but we will try. Very soft and decent squeaky sound.
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Reviewed in the United States on January 21, 2026

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