2. Recombinant Proteins
  3. CAR-T Related Proteins CD Antigens Receptor Proteins
  4. NK Cell CD Proteins Macrophage CD Proteins Monocyte CD Proteins Stem Cell CD Proteins Dendritic Cell CD Proteins Siglec
  5. Siglec-3/CD33 Siglec-3/CD33
  6. Siglec-3/CD33 Protein, Human (HEK293)

Siglec-3/CD33 Protein, Human (HEK293)

Cat. No.: HY-P73643
Handling Instructions

Siglec-3/CD33, a sialic-acid-binding lectin, crucially mediates cell-cell interactions and immune cell quiescence. Preferring sialic acid on specific mucins, it forms homodimers, interacting with PTPN6/SHP-1 and PTPN11/SHP-2 upon phosphorylation. CD33 also engages C1QA through its C-terminus, activating CD33 inhibitory motifs. Siglec-3/CD33 Protein, Human (HEK293) is the recombinant human-derived Siglec-3/CD33 protein, expressed by HEK293 , with tag free. The total length of Siglec-3/CD33 Protein, Human (HEK293) is 242 a.a., with molecular weight of ~27.4 kDa.

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

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Description

Siglec-3/CD33, a sialic-acid-binding lectin, crucially mediates cell-cell interactions and immune cell quiescence. Preferring sialic acid on specific mucins, it forms homodimers, interacting with PTPN6/SHP-1 and PTPN11/SHP-2 upon phosphorylation. CD33 also engages C1QA through its C-terminus, activating CD33 inhibitory motifs. Siglec-3/CD33 Protein, Human (HEK293) is the recombinant human-derived Siglec-3/CD33 protein, expressed by HEK293 , with tag free. The total length of Siglec-3/CD33 Protein, Human (HEK293) is 242 a.a., with molecular weight of ~27.4 kDa.
Background

Siglec-3/CD33, a sialic-acid-binding immunoglobulin-like lectin, plays a crucial role in mediating cell-cell interactions and maintaining immune cells in a resting state. It exhibits a preference for binding sialic acid on the short O-linked glycans of specific mucins. The protein forms homodimers through disulfide linkages and interacts with signaling molecules such as PTPN6/SHP-1 and PTPN11/SHP-2 upon phosphorylation. Additionally, CD33 engages with C1QA via its C-terminus, leading to the activation of CD33 inhibitory motifs.
Species

Human
Source

HEK293
Tag

Tag Free
Accession

AAH28152 (D18-H259)
Gene ID

945  [NCBI]
Molecular Construction
N-term
CD33 (D18-H259)
Accession # AAH28152
C-term
Synonyms
Myeloid Cell Surface Antigen CD33; Siglec-3; gp67; CD33; SIGLEC3
Molecular Weight

Approximately 27.4 kDa
Purity

Greater than 95% as determined by reducing SDS-PAGE.
Endotoxin Level

<1 EU/μg, determined by LAL method.
Documentation
Handling Instructions (2659 KB)

Siglec-3/CD33 Protein, Human (HEK293) 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.

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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
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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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