FGL1 Protein, Human (242a.a, HEK293, hFc)
FGL1 protein is the main ligand of LAG3 and can inhibit antigen-specific T cell activation, mediating the inhibitory function of LAG3 independently of MHC-II binding. FGL1 is secreted by liver cells and contributes to their growth. FGL1 Protein, Human (242a.a, HEK293, hFc) is the recombinant human-derived FGL1 protein, expressed by HEK293 , with N-hFc labeled tag.
- Species: Human
- Source: HEK293
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Storage:Stored at -20°C for 2 years from date of receipt. 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.
Biological Activity
Description
FGL1 protein is the main ligand of LAG3 and can inhibit antigen-specific T cell activation, mediating the inhibitory function of LAG3 independently of MHC-II binding. FGL1 is secreted by liver cells and contributes to their growth. FGL1 Protein, Human (242a.a, HEK293, hFc) is the recombinant human-derived FGL1 protein, expressed by HEK293 , with N-hFc labeled tag.
Background
FGL1 protein functions as an immune suppressive molecule, exerting inhibitory effects on antigen-specific T-cell activation by serving as a major ligand for LAG3. It plays a pivotal role in mediating LAG3's T-cell inhibitory function independently of MHC class II (MHC-II) binding. Beyond its immune-regulatory role, FGL1 is secreted by hepatocytes, contributing to their growth. Existing as a homodimer, FGL1 interacts with LAG3 through its Fibrinogen C-terminal domain, specifically binding to LAG3's Ig-like domains 1 and 2. This molecular interaction, detailed in studies, underscores the significance of FGL1 in modulating immune responses and hepatocyte growth, highlighting its potential as a key player in the regulation of T-cell activation and hepatic functions.
Technical Parameters
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Species Human
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Source HEK293
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Tag N-hFc
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Accession
Q08830 (D64-N305)
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Molecular Construction
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N-term
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hFc
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FGL1 (D64-N305)
Accession # Q08830 -
C-term
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Protein Length
Partial
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Conjugation
Biotin
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Synonyms
FGL1; Fibrinogen-Like Protein 1; Fibrinogen Like 1; LFIRE-1; HPS; HFREP1; Hepassocin; HP-041; HFREP-1; Hepatocellular Carcinoma-Related Sequence; Hepatocyte-Derived Fibrinogen-Related Protein 1; LFIRE1; Liver Fibrinogen-Related Protein 1
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AA Sequence
DKGDENTVIDLGSKRQYADCSEIFNDGYKLSGFYKIKPLQSPAEFSVYCDMSDGGGWTVIQRRSDGSENFNRGWKDYENGFGNFVQKHGEYWLGNKNLHFLTTQEDYTLKIDLADFEKNSRYAQYKNFKVGDEKNFYELNIGEYSGTAGDSLAGNFHPEVQWWASHQRMKFSTWDRDHDNYEGNCAEEDQSGWWFNRCHSANLNGVYYSGPYTAKTDNGIVWYTWHGWWYSLKSVVMKIRPN
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Predicted Molecular Mass
54.8 kDa
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Molecular Weight
Approximately 60-66 kDa, based on SDS-PAGE under reducing conditions, due to the glycosylation.
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Purity
≥ 95%, as determined by reducing SDS-PAGE.
Product Properties
Lyophilized powder
<1 EU/μg, determined by LAL method.
It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH2O.
Stored at -20°C for 2 years from date of receipt. 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.
Room temperature in continental US; may vary elsewhere.
Documentation
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)