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- Table of Contents
1 Citations 5 Q&As
Facts about Serine protease HTRA1.
During cleavage of proteoglycans, may release soluble FGF-glycosaminoglycan complexes that promote the intensity and range of FGF signals in the extracellular space. Regulates the access to insulin-like growth factors (IGFs) by cleaving IGF-binding proteins.
| Human | |
|---|---|
| Gene Name: | HTRA1 |
| Uniprot: | Q92743 |
| Entrez: | 5654 |

| Belongs to: |
|---|
| peptidase S1C family |

ARMD7; EC 3.4.21; EC 3.4.21.108; High-temperature requirement A serine peptidase 1; HtrA serine peptidase 1; HTRA1; IGFBP5-protease; L56; ORF480; PRSS11; Serine protease 11; serine, 11 (IGF binding)
Mass (kDA):
51.287 kDA

| Human | |
|---|---|
| Location: | 10q26.13 |
| Sequence: | 10; NC_000010.11 (122461553..122514907) |
Widely expressed, with strongest expression in placenta (at protein level). Secreted by synovial fibroblasts. Up- regulated in osteoarthritis and rheumatoid arthritis synovial fluids and cartilage as compared with non-arthritic (at protein level).
Cell membrane. Secreted. Cytoplasm, cytosol. Predominantly secreted (PubMed:15208355). Also found associated with the plasma membrane (PubMed:21297635).





PMID: 8977104 by Zumbrunn J., et al. Primary structure of a putative serine protease specific for IGF- binding proteins.
PMID: 9852107 by Hu S.I., et al. Human HtrA, an evolutionarily conserved serine protease identified as a differentially expressed gene product in osteoarthritic cartilage.