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Rabbit Anti-IGSF1/FITC Conjugated antibody
background:
IGSF1 is a highly glycolylated immunoglobulin domain-containing protein. IGSF1 has been shown to act as a coreceptor in inhibin signaling, however, it does not appear to be a high-affinity inhibin receptor by itself. May reduce or inhibit activin A signaling and is believed to be necessary in the mediation of specific effects of inhibin B on activin-stimulated transcription. IGSF1 has been found to interact with several members of the ACVR family and possibly some members of the BMPR group. There are 3 known isoforms of IGSF1, with 1 and 2 likely being multi-pass membrane proteins. Isoform 3 is believed to be expressed as a secreted form. Expression is high in pancreas, testis and fetal liver, while heart, prostate and small intestine show only moderate expression. IGSF1 may be found at very low levels in brain, muscle, thymus, ovary, colon, fetal lung and fetal kidney. Isoform 3 has been detected in pituitary gland.
Function:
Seems to be a coreceptor in inhibin signaling, but seems not to be a high-affinity inhibin receptor. Antagonizes activin A signaling in the presence or absence of inhibin B (By similarity). Necessary to mediate a specific antagonistic effect of inhibin B on activin-stimulated transcription.
Subunit:
Interacts with INHA (By similarity). In PubMed:12385827 does not interact with INHA; standard receptor binding assay. Interacts with ACVR1B; the interaction appears to be ligand-dependent as it is diminished by inhibin B and activin A. Interacts with ACVR2A, ACVR2B, ACVRL1 and BMPR1B. Interacts with HECTD1.
Subcellular Location:
Isoforms 1 and 2: Membrane; Multipass membrane protein (Potential). Isoform 3: Secreted.
Tissue Specificity:
Highly expressed in pancreas, testis and fetal liver. Moderately expressed in heart, prostate and small intestine. Expressed at very low levels in brain, thymus, ovary, colon, fetal lung and fetal kidney. Expressed in muscle. Isoform 3 is expressed in pituitary gland.
Similarity:
Contains 12 Ig-like C2-type (immunoglobulin-like) domains.
Database links:
Entrez Gene: 3547 Human
Omim: 300137 Human
SwissProt: Q8N6C5 Human
Unigene: 22111 Human
Important Note:
This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications.
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