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SSB Protein, Human

Cat. No.: HY-P73630A
COA Handling Instructions

The SSB protein critically binds to the 3' poly(U) terminus of RNA polymerase III transcripts, preventing exonuclease digestion and aiding in correct folding. In coxsackievirus B3 infection, SSB binds to the viral internal ribosome entry site (IRES) and enhances IRES-mediated translation. SSB Protein, Human is the recombinant human-derived SSB protein, expressed by E. coli , with tag free. The total length of SSB Protein, Human is 408 a.a., with molecular weight of ~50 kDa.

For research use only. We do not sell to patients.

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Size Price Stock Quantity
Free Sample   Apply now
5 μg $68 In-stock
10 μg $115 In-stock
50 μg $300 In-stock
100 μg $510 In-stock
500 μg $1425 In-stock
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  • Biological Activity

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Description

The SSB protein critically binds to the 3' poly(U) terminus of RNA polymerase III transcripts, preventing exonuclease digestion and aiding in correct folding. In coxsackievirus B3 infection, SSB binds to the viral internal ribosome entry site (IRES) and enhances IRES-mediated translation. SSB Protein, Human is the recombinant human-derived SSB protein, expressed by E. coli , with tag free. The total length of SSB Protein, Human is 408 a.a., with molecular weight of ~50 kDa.

Background

The SSB protein plays a crucial role by binding to the 3' poly(U) terminus of nascent RNA polymerase III transcripts, providing protection against exonuclease digestion and facilitating their proper folding and maturation, as evidenced by various studies. Additionally, in the context of Coxsackievirus B3 infection, SSB binds to the viral internal ribosome entry site (IRES), thereby stimulating IRES-mediated translation. The protein further engages in interactions with DDX15 and may potentially interact with RUFY1, indicating its involvement in diverse cellular processes and highlighting its multifunctional nature.

Species

Human

Source

E. coli

Tag

Tag Free

Accession

P05455 (M1-Q408)

Gene ID
Molecular Construction
N-term
SSB (M1-Q408)
Accession # P05455
C-term
Synonyms
Lupus La protein; Sjoegren syndrome type B antigen; SS-B
AA Sequence

MAENGDNEKMAALEAKICHQIEYYFGDFNLPRDKFLKEQIKLDEGWVPLEIMIKFNRLNRLTTDFNVIVEALSKSKAELMEISEDKTKIRRSPSKPLPEVTDEYKNDVKNRSVYIKGFPTDATLDDIKEWLEDKGQVLNIQMRRTLHKAFKGSIFVVFDSIESAKKFVETPGQKYKETDLLILFKDDYFAKKNEERKQNKVEAKLRAKQEQEAKQKLEEDAEMKSLEEKIGCLLKFSGDLDDQTCREDLHILFSNHGEIKWIDFVRGAKEGIILFKEKAKEALGKAKDANNGNLQLRNKEVTWEVLEGEVEKEALKKIIEDQQESLNKWKSKGRRFKGKGKGNKAAQPGSGKGKVQFQGKKTKFASDDEHDEHDENGATGPVKRAREETDKEEPASKQQKTENGAGDQ

Molecular Weight

Approximately 50 kDa

Purity
  • Greater than 95% as determined by reducing SDS-PAGE.
Appearance

Lyophilized powder.

Formulation

Lyophilized a 0.2 μm filtered solution of PBS, 300 mM NaCl, pH 7.4.

Endotoxin Level

<1 EU/μg, determined by LAL method.

Reconstitution

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH2O. For long term storage it is recommended to add a carrier protein (0.1% BSA, 5% HSA, 10% FBS or 5% Trehalose).

Storage & Stability

Stored at -20°C for 2 years. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.

Shipping

Room temperature in continental US; may vary elsewhere.

Documentation

SSB Protein, Human Related Classifications

Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

  • Reconstitution Calculator

  • Dilution Calculator

  • Specific Activity Calculator

The reconstitution calculator equation

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration
= ÷

The dilution calculator equation

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
× = ×
C1   V1   C2   V2

The specific activity calculator equation

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)
Unit/mg = 106 ÷ ng/mL

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SSB Protein, Human
Cat. No.:
HY-P73630A
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