SARS-CoV-2 Spike RBD Protein, His Tag (NB.1.8.1) (MALS verified)
SARS‑CoV‑2 NB.1.8.1 is an Omicron‑descendant variant under monitoring, first detected in early 2025. It carries multiple spike mutations linked to immune escape and shows a growth advantage over co‑circulating BA.2.86/JN.1 lineages2. While currently at low prevalence in many regions, it is spreading in parts of Asia and is expected to rise, though no major increase in disease severity is anticipated.
Product Specifications
Background
SARS‑CoV‑2 NB.1.8.1 is an Omicron‑descendant variant under monitoring, first detected in early 2025. It carries multiple spike mutations linked to immune escape and shows a growth advantage over co‑circulating BA.2.86/JN.1 lineages2. While currently at low prevalence in many regions, it is spreading in parts of Asia and is expected to rise, though no major increase in disease severity is anticipated.
Specifications
This protein carries a polyhistidine tag at the C-terminus. The protein has a calculated MW of 26.7 kDa. The protein migrates as 35-41 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under reducing (R) condition (SDS-PAGE) due to glycosylation.
Expression Region
Arg 319 - Lys 537
Target
Spike RBD
Conjugation
Unconjugated
Tag
C-10xHis
Stability
-20°C to -70°C for 12 months in lyophilized state; -70°C for 3 months under sterile conditions after reconstitution. For long term storage, the product should be stored at lyophilized state at -20°C or lower.
Endotoxin
1.0 EU per μg
Purity
90%
Format
Powder
Buffer
PBS, pH7.4
Molecular Weight
26.7 kDa
Additionnal Information
Please see 'Shipping-and-Payments' sheet. Website: https://www.acrobiosystems.com/support/shipping-and-payments
Shipping Conditions
RT
Storage Conditions
-20°C
Package Size
1mg*1
Host or Source
HEK293
Species
SARS-CoV-2
Protein ID
QHD43416.1 (I332V, G339H, K356T, S371F, S373P, S375F, T376A, R403K, D405N, R408S, K417N, A435S, N440K, V445H, G446S, N450D, L452W, L455S, F456L, N460K, S477N, T478I, N481K, E484K, F486P, Q493E, Q498R, N501Y, Y505H)
Preservative
Trehalose
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