SKU: 13119104022

H1N1 HA1 (A/California/04/2009) His Tag Protein

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Description

H1N1 HA1 (A/California/04/2009) His Tag ProteinProduct Specification Species Influenza Antigen HA Hemagglutinin Synonyms Hemagglutinin, HA Accession Accession#: C3W5S3 Amino Acid Sequence Asp18 Gln529, with C terminal 10*His

Product Specification


Species Influenza
Antigen HA/Hemagglutinin
Synonyms Hemagglutinin, HA
Accession Accession#: C3W5S3
Amino Acid Sequence

Asp18-Gln529, with C-terminal 10*His DTLCIGYHANNSTDTVDTVLEKNVTVTHSVNLLEDKHNGKLCKLRGVAPLHLGKCNIAGWILGNPECESLSTASSWSYIVETPSSDNGTCYPGDFIDYEELREQLSSVSSFERFEIFPKTSSWPNHDSNKGVTAACPHAGAKSFYKNLIWLVKKGNSYPKLSKSYINDKGKEVLVLWGIHHPSTSADQQSLYQNADTYVFVGSSRYSKKFKPEIAIRPKVRDQEGRMNYYWTLVEPGDKITFEATGNLVVPRYAFAMERNAGSGIIISDTPVHDCNTTCQTPKGAINTSLPFQNIHPITIGKCPKYVKSTKLRLATGLRNIPSIQSRGLFGAIAGFIEGGWTGMVDGWYGYHHQNEQGSGYAADLKSTQNAIDEITNKVNSVIEKMNTQFTAVGKEFNHLEKRIENLNKKVDDGFLDIWTYNAELLVLLENERTLDYHDSNVKNLYEKVRSQLKNNAKEIGNGCFEFYHKCDNTCMESVKNGTYDYPKYSEEAKLNREEIDGVKLESTRIYQGGGSGGGSHHHHHHHH

Expression System Hi5(Baculovirus-InsectCells)
Molecular Weight 49-57kDa
Endotoxin <0.1EU/μg
Conjugation Unconjugated
Tag His Tag
Physical Appearance Liquid
Storage Buffer 20mM, Tris,150mM, NaCl, 10% glycerol, pH7.5.
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

1.Michal Lazniewski, M. et al. (2018) Briefings in Functional Genomics 17:415.2.Sriwilaijaroen, N. and Suzuki, Y. (2012) Proc. Jpn. Acad. Ser. B. Phys. Biol Sci. 88:226.3.Chang, Y.J. et al. (2021) Sci Rep 11:8637.

Background

Neuraminidase (NA) and hemagglutinin (HA) are major membrane glycoproteins found on the surface of influenza virus. Hemagglutinin binds to the sialic acid-containing receptors on the surface of host cells during initial infection and at the end of an infectious cycle. Hemagglutinin also plays a major role in the determination of host range restriction and virulence. As a class I viral fusion protein, hemagglutinin is responsible for penetration of the virus into the cell cytoplasm by mediating the fusion of the membrane of the endocytosed virus particle with the endosomal membrane. Binds to sialic acid-containing receptors on the cell surface, bringing about the attachment of the virus particle to the cell. This attachment induces virion internalization either through clathrin-dependent endocytosis or through clathrin- and caveolin-independent pathway. Plays a major role in the determination of host range restriction and virulence. Class I viral fusion protein. Responsible for penetration of the virus into the cell cytoplasm by mediating the fusion of the membrane of the endocytosed virus particle with the endosomal membrane. Low pH in endosomes induces an irreversible conformational change in HA2, releasing the fusion hydrophobic peptide. Several trimers are required to form a competent fusion pore.

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SKU: 13119104022

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4.1 ★★★★★
Based on 27 reviews
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Bernard Eisenfeld, M.D.
Chelsea, US
★★★★★ 5
This is the one.
Size: 58.3mm, Color: Black
As an el Supremo Coffee Geek, I've wasted money on lots of different tampers. Save your money and buy this one or it's equivalent. This thing is heavy duty, solid, well-made, self-leveling, tamps at 30 pounds and is fool-proof even for fools. Also, it's a palm tamper meaning more fun and more satisfying to use as you prep the puck for your morning buzz. Buy it. You will thank me.
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Reviewed in the United States on March 30, 2024
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lesserof2weevils
Draper, US
★★★★★ 5
Super easy to use and takes the guess-work out of getting even pressure on the grounds
Size: 58.3mm, Color: Black, Size: 58.3mm, Color: Black
I have been using a hand tamper for many years and have a good idea of the pressure I am applying to the grounds in the portafilter. I honestly considered spring tampers to be a bit silly. But this tamper really does take the guess-work out of pressing the coffee grounds. The shroud helps guide the press so that pressure is applied even and flat across the surface. With the manual tamper, there will be some play when pressing, or some unevenness in pressure. This is especially true when cranking out many espressos during a breakfast party with friends. Having the spring tamper makes quick work of turning out a lot of coffees with consistency. There are no instructions for taking this tamper apart to clean inside, and you may not really need to do that very often. After each use, just pull back the shroud (the black piece that moves up and down) and wipe off the tamper (the shiny steel part). This will help prevent grounds from working their way inside. If you do want to take it apart, it’s easy. Pull back the shroud and unscrew the tamper. It will come apart into three pieces. Wipe the pieces off and reassemble. Super quick and easy. This tamper is very heavy. My scale shows 656 g (about a pound and a half). It fits the portafilter exactly, with no slop. Just place on top of grounds and press!. Don’t even worry about pressure, just push down all the way. Overall I had fun using this tamper versus my manual one. And since I make myself a cappuccino very early in the morning, I don’t have to be very awake to get a good pack on the grounds and get my coffee fast!
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Reviewed in the United States on January 10, 2024
M
Verified Purchase
Monty
Cuba, US
★★★★★ 5
Good size
This works for most of the items (powder like cinnamon or beet root, etc.0 i need it for. I would like to have one that is 50 oz. It is airtight and a great product but I'm not convinced pumping it 20-30 times really helps.
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Reviewed in the United States on February 22, 2025
S
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Stacy
Phoenix, US
★★★★★ 4
Good product/unsure of air seal
We love this to hold our coffee beans, but we aren’t sure if it truly seals air out. It seems to work great though and our beans taste fresh!
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Reviewed in the United States on January 22, 2025
A
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Artlover06
Omaha, US
★★★★★ 5
Love it!!
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Reviewed in the United States on July 12, 2025

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