Toggle navigation
About
What is Reactome ?
News
Team
Scientific Advisory Board
Funding
Editorial Calendar
Release Calendar
Statistics
Our Logo
License Agreement
Privacy Notice
Disclaimer
Digital Preservation
Contact us
Content
Table of Contents
DOIs
Data Schema
Reactome Research Spotlight
ORCID Integration Project
COVID-19 Disease Pathways
Docs
Userguide
Pathway Browser
How do I search ?
Details Panel
Analysis Tools
Analysis Data
Analysis Gene Expression
Species Comparison
Tissue Distribution
Diseases
Cytomics
Review Status of Reactome Events
ReactomeFIViz
Developer's Zone
Graph Database
Analysis Service
Content Service
Pathways Overview
Pathway Diagrams
Icon Info
EHLD Specs & Guidelines
Icon Library Guidelines
Data Model
Curator Guide
Release Documentation
Computationally inferred events
FAQ
Linking to Us
Citing us
Tools
Pathway Browser
Analyse gene list
Analyse gene expression
Species Comparison
Tissue Distribution
Analysis Service
Content Service
ReactomeFIViz
Advanced Data Search
Site Search
Community
Contribute Pathway Knowledge
Icon Library
Outreach
Events
Publications
Partners
Contributors
Resources Guide
Download
About
What is Reactome ?
News
Team
Scientific Advisory Board
Funding
Editorial Calendar
Release Calendar
Statistics
Our Logo
License Agreement
Privacy Notice
Disclaimer
Digital Preservation
Contact us
Content
Table of Contents
DOIs
Data Schema
Reactome Research Spotlight
ORCID Integration Project
COVID-19 Disease Pathways
Docs
Userguide
Pathway Browser
How do I search ?
Details Panel
Analysis Tools
Analysis Data
Analysis Gene Expression
Species Comparison
Tissue Distribution
Diseases
Cytomics
Review Status of Reactome Events
ReactomeFIViz
Developer's Zone
Graph Database
Analysis Service
Content Service
Pathways Overview
Pathway Diagrams
Icon Info
EHLD Specs & Guidelines
Icon Library Guidelines
Data Model
Curator Guide
Release Documentation
Computationally inferred events
FAQ
Linking to Us
Citing us
Tools
Pathway Browser
Analyse gene list
Analyse gene expression
Species Comparison
Tissue Distribution
Analysis Service
Content Service
ReactomeFIViz
Advanced Data Search
Site Search
Community
Contribute Pathway Knowledge
Icon Library
Outreach
Events
Publications
Partners
Contributors
Resources Guide
Download
Search ...
Go!
MASP1(20-448) [extracellular region]
Stable Identifier
R-HSA-182685
Type
Protein [EntityWithAccessionedSequence]
Species
Homo sapiens
Compartment
extracellular region
Synonyms
MASP-1 heavy chain
Locations in the PathwayBrowser
Expand all
Immune System (Homo sapiens)
Innate Immune System (Homo sapiens)
Complement cascade (Homo sapiens)
Initial triggering of complement (Homo sapiens)
Conversion of C2 into C2a and C2b (Homo sapiens)
C4 activators [plasma membrane] (Homo sapiens)
MBL2,FCN:activated MASPs:carbohydrate patterns [plasma membrane] (Homo sapiens)
Ficolin-1:activated MASP-1:activated MASP-2:Ca2+:ficolin ligand [plasma membrane] (Homo sapiens)
Activated MASP1 [extracellular region] (Homo sapiens)
MASP1(20-448) [extracellular region] (Homo sapiens)
Ficolin-2:activated MASP-1:activated MASP-2:Ca2+:ficolin ligand [plasma membrane] (Homo sapiens)
Activated MASP1 [extracellular region] (Homo sapiens)
MASP1(20-448) [extracellular region] (Homo sapiens)
Ficolin-3:activated MASP-1:activated MASP-2:Ca2+:ficolin ligand [plasma membrane] (Homo sapiens)
Activated MASP1 [extracellular region] (Homo sapiens)
MASP1(20-448) [extracellular region] (Homo sapiens)
MBL:activated MASPs:mannose-based carbohydrates [plasma membrane] (Homo sapiens)
MBL2 dodecamer:2xActivated MASP1:2xActivated MASP2-1 [extracellular region] (Homo sapiens)
Activated MASP1 [extracellular region] (Homo sapiens)
MASP1(20-448) [extracellular region] (Homo sapiens)
Conversion of C4 into C4a and C4b (Homo sapiens)
C4 activators [plasma membrane] (Homo sapiens)
MBL2,FCN:activated MASPs:carbohydrate patterns [plasma membrane] (Homo sapiens)
Ficolin-1:activated MASP-1:activated MASP-2:Ca2+:ficolin ligand [plasma membrane] (Homo sapiens)
Activated MASP1 [extracellular region] (Homo sapiens)
MASP1(20-448) [extracellular region] (Homo sapiens)
Ficolin-2:activated MASP-1:activated MASP-2:Ca2+:ficolin ligand [plasma membrane] (Homo sapiens)
Activated MASP1 [extracellular region] (Homo sapiens)
MASP1(20-448) [extracellular region] (Homo sapiens)
Ficolin-3:activated MASP-1:activated MASP-2:Ca2+:ficolin ligand [plasma membrane] (Homo sapiens)
Activated MASP1 [extracellular region] (Homo sapiens)
MASP1(20-448) [extracellular region] (Homo sapiens)
MBL:activated MASPs:mannose-based carbohydrates [plasma membrane] (Homo sapiens)
MBL2 dodecamer:2xActivated MASP1:2xActivated MASP2-1 [extracellular region] (Homo sapiens)
Activated MASP1 [extracellular region] (Homo sapiens)
MASP1(20-448) [extracellular region] (Homo sapiens)
Creation of C4 and C2 activators (Homo sapiens)
Lectin pathway of complement activation (Homo sapiens)
Activation of MASPs (Homo sapiens)
MBL2,FCN:activated MASPs:carbohydrate patterns [plasma membrane] (Homo sapiens)
Ficolin-1:activated MASP-1:activated MASP-2:Ca2+:ficolin ligand [plasma membrane] (Homo sapiens)
Activated MASP1 [extracellular region] (Homo sapiens)
MASP1(20-448) [extracellular region] (Homo sapiens)
Ficolin-2:activated MASP-1:activated MASP-2:Ca2+:ficolin ligand [plasma membrane] (Homo sapiens)
Activated MASP1 [extracellular region] (Homo sapiens)
MASP1(20-448) [extracellular region] (Homo sapiens)
Ficolin-3:activated MASP-1:activated MASP-2:Ca2+:ficolin ligand [plasma membrane] (Homo sapiens)
Activated MASP1 [extracellular region] (Homo sapiens)
MASP1(20-448) [extracellular region] (Homo sapiens)
MBL:activated MASPs:mannose-based carbohydrates [plasma membrane] (Homo sapiens)
MBL2 dodecamer:2xActivated MASP1:2xActivated MASP2-1 [extracellular region] (Homo sapiens)
Activated MASP1 [extracellular region] (Homo sapiens)
MASP1(20-448) [extracellular region] (Homo sapiens)
External Reference Information
External Reference
UniProt:P48740 MASP1
Gene Names
MASP1, CRARF, CRARF1, PRSS5
Chain
signal peptide:1-19, chain:20-699, chain:20-448, chain:449-699
Reference Genes
COSMIC (genes):MASP1 MASP1
dbSNP Gene:5648 MASP1
ENSEMBL:ENSG00000127241 MASP1
Participates
as a component of
Activated MASP1 [extracellular region] (Homo sapiens)
Other forms of this molecule
MASP1(20-699) [extracellular region]
MASP1(449-699) [extracellular region]
Inferred To
MASP1(20-448) [extracellular region]
(Bos taurus)
MASP1(20-448) [extracellular region]
(Canis familiaris)
MASP1(20-448) [extracellular region]
(Gallus gallus)
MASP1(20-448) [extracellular region]
(Mus musculus)
MASP1(20-448) [extracellular region]
(Rattus norvegicus)
MASP1(20-448) [extracellular region]
(Sus scrofa)
MASP1(20-448) [extracellular region]
(Xenopus tropicalis)
© 2025
Reactome
Cite Us!
Cite Us!
Cite Us!
Warning!
Unable to extract citation. Please try again later.
Download As:
BibTeX
RIS
Text