Version 5.4
| Homo sapiens Gene: MASP1 | |||||||||||||||||||
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| Summary | |||||||||||||||||||
| InnateDB Gene | IDBG-69257.6 | ||||||||||||||||||
| Last Modified | 2014-10-13 [Report errors or provide feedback] | ||||||||||||||||||
| Gene Symbol | MASP1 | ||||||||||||||||||
| Gene Name | mannan-binding lectin serine peptidase 1 (C4/C2 activating component of Ra-reactive factor) | ||||||||||||||||||
| Synonyms | 3MC1; CRARF; CRARF1; MAP1; MAp44; MASP; MASP3; PRSS5; RaRF | ||||||||||||||||||
| Species | Homo sapiens | ||||||||||||||||||
| Ensembl Gene | ENSG00000127241 | ||||||||||||||||||
| Encoded Proteins |
mannan-binding lectin serine peptidase 1 (C4/C2 activating component of Ra-reactive factor)
mannan-binding lectin serine peptidase 1 (C4/C2 activating component of Ra-reactive factor)
mannan-binding lectin serine peptidase 1 (C4/C2 activating component of Ra-reactive factor)
mannan-binding lectin serine peptidase 1 (C4/C2 activating component of Ra-reactive factor)
mannan-binding lectin serine peptidase 1 (C4/C2 activating component of Ra-reactive factor)
mannan-binding lectin serine peptidase 1 (C4/C2 activating component of Ra-reactive factor)
mannan-binding lectin serine peptidase 1 (C4/C2 activating component of Ra-reactive factor)
mannan-binding lectin serine peptidase 1 (C4/C2 activating component of Ra-reactive factor)
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| Protein Structure | |||||||||||||||||||
| Useful resources | Stemformatics EHFPI ImmGen | ||||||||||||||||||
| InnateDB Annotation | |||||||||||||||||||
| Summary |
MASP1 is an essential protease of both the lectin and alternative complement pathways, essential components of innate immunity, participating in the pathogenesis of inflammatory diseases and in host defence.
MASP1 is crucial for classical complement activation, but is not required for the alternative pathway function.
MASP1 forms a complex with MASP2 to activate the complement system.
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| Entrez Gene | |||||||||||||||||||
| Summary |
This gene encodes a serine protease that functions as a component of the lectin pathway of complement activation. The complement pathway plays an essential role in the innate and adaptive immune response. The encoded protein is synthesized as a zymogen and is activated when it complexes with the pathogen recognition molecules of lectin pathway, the mannose-binding lectin and the ficolins. This protein is not directly involved in complement activation but may play a role as an amplifier of complement activation by cleaving complement C2 or by activating another complement serine protease, MASP-2. The encoded protein is also able to cleave fibrinogen and factor XIII and may may be involved in coagulation. A splice variant of this gene which lacks the serine protease domain functions as an inhibitor of the complement pathway. Alternate splicing results in multiple transcript variants.[provided by RefSeq, Apr 2010] |
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| Gene Information | |||||||||||||||||||
| Type | Protein coding | ||||||||||||||||||
| Genomic Location | Chromosome 3:187217285-187292022 | ||||||||||||||||||
| Strand | Reverse strand | ||||||||||||||||||
| Band | q27.3 | ||||||||||||||||||
| Transcripts | |||||||||||||||||||
| Interactions | |||||||||||||||||||
| Number of Interactions |
This gene and/or its encoded proteins are associated with 31 experimentally validated interaction(s) in this database.
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| Gene Ontology | |||||||||||||||||||
Molecular Function |
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| Biological Process |
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| Cellular Component |
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| Orthologs | |||||||||||||||||||
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Species
Mus musculus
Bos taurus
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Gene ID
Gene Order
Not yet available
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| Pathways | |||||||||||||||||||
| NETPATH | |||||||||||||||||||
| REACTOME |
Lectin pathway of complement activation pathway
Initial triggering of complement pathway
Innate Immune System pathway
Binding and Uptake of Ligands by Scavenger Receptors pathway
Scavenging by Class A Receptors pathway
Creation of C4 and C2 activators pathway
Immune System pathway
Ficolins bind to repetitive carbohydrate structures on the target cell surface pathway
Complement cascade pathway
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| KEGG |
Complement and coagulation cascades pathway
Staphylococcus aureus infection pathway
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| INOH | |||||||||||||||||||
| PID NCI | |||||||||||||||||||
| Cross-References | |||||||||||||||||||
| SwissProt | |||||||||||||||||||
| TrEMBL | |||||||||||||||||||
| UniProt Splice Variant | |||||||||||||||||||
| Entrez Gene | |||||||||||||||||||
| UniGene | Hs.602872 Hs.89983 | ||||||||||||||||||
| RefSeq | NM_001031849 NM_001879 NM_139125 XM_006713700 | ||||||||||||||||||
| HUGO | |||||||||||||||||||
| OMIM | |||||||||||||||||||
| CCDS | CCDS33907 CCDS33908 CCDS33909 | ||||||||||||||||||
| HPRD | 02749 | ||||||||||||||||||
| IMGT | |||||||||||||||||||
| EMBL | |||||||||||||||||||
| GenPept | |||||||||||||||||||
| RNA Seq Atlas | |||||||||||||||||||