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MASP1
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  • MASP1
PROTEIN STRUCTURE
ANTIBODIES
AND
VALIDATION
Protein structures
GENERAL INFORMATIONi

General description of the gene and the encoded protein(s) using information from HGNC and Ensembl, as well as predictions made by the Human Protein Atlas project.

Gene namei

Official gene symbol, which is typically a short form of the gene name, according to HGNC.

MASP1
Synonyms CRARF, MASP, PRSS5
Gene descriptioni

Full gene name according to HGNC.

Mannan binding lectin serine peptidase 1
Protein classi

Assigned HPA protein class(es) for the encoded protein(s).

Read more
Disease related genes
Enzymes
Human disease related genes
Plasma proteins
Potential drug targets
Predicted locationi

All transcripts of all genes have been analyzed regarding the location(s) of corresponding protein based on prediction methods for signal peptides and transmembrane regions.

  • Genes with at least one transcript predicted to encode a secreted protein, according to prediction methods or to UniProt location data, have been further annotated and classified with the aim to determine if the corresponding protein(s) are secreted or actually retained in intracellular locations or membrane-attached.

  • Remaining genes, with no transcript predicted to encode a secreted protein, will be assigned the prediction-based location(s).

The annotated location overrules the predicted location, so that a gene encoding a predicted secreted protein that has been annotated as intracellular will have intracellular as the final location.

Read more
Intracellular,Secreted
Protein evidence Evidence at protein level (all genes)
GENE INFORMATIONi

Gene information from Ensembl and Entrez, as well as links to available gene identifiers are displayed here. Information was retrieved from Ensembl if not indicated otherwise.

Chromosome 3
Cytoband q27.3
Chromosome location (bp) 187217282 - 187291980
Number of transcriptsi

Number of protein-coding transcripts from the gene as defined by Ensembl.

8
Ensembl ENSG00000127241 (version 103.38)
Entrez gene 5648
HGNC HGNC:6901
UniProt P48740 (UniProt - Evidence at protein level)
neXtProt NX_P48740
Antibodypedia MASP1 antibodies


PROTEIN STRUCTUREi

The Structure section provides predicted structures from the Alphafold protein structure database and available experimental structures from Protein Data Bank (PDB).

In the Structure drop-down menu all experimental structures from PDB are available for selection and display. The structures are displayed using the NGL Viewer and can be zoomed-in and rotated either manually or by checking the Autorotate box. The Color scheme can be selected to show the residue index, chain name or confidence score (as B-factors and pLDDT score for experimental and predicted structures, respectively). The positions for available antigen sequences in the structure are shown if Antigens is turned to ON, and the Variants slider can be used to show the positions of clinical and population variants.https://github.com/nglviewer/ngl

Read more

Predicted


Description: Structure prediction from Alphafold project. Structure version 2

# Chains: 1      # Clinical variants: 0      # Population variants: 470

Experimental


Description: MBL-Ficolin Associated Protein-1, MAP-1 aka MAP44 (X-ray)

# Chains: 1      # Clinical variants: 0      # Population variants: 0

Antigens:

Off
On

Variants:

Off
Clinical
Population

Color scheme:

Confidence
Residue index
Chain name

Autorotate:

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On



PROTEIN BROWSERi

The protein browser displays the antigen location on the target protein(s) and the features of the target protein. The tabs at the top of the protein view section can be used to switch between the different splice variants to which an antigen has been mapped.

At the top of the view, the position of the antigen (identified by the corresponding HPA identifier) is shown as a green bar. A yellow triangle on the bar indicates a <100% sequence identity to the protein target.

Below the antigens, the maximum percent sequence identity of the protein to all other proteins from other human genes is displayed, using a sliding window of 10 aa residues (HsID 10) or 50 aa residues (HsID 50). The region with the lowest possible identity is always selected for antigen design, with a maximum identity of 60% allowed for designing a single-target antigen (read more).

The curve in blue displays the predicted antigenicity i.e. the tendency for different regions of the protein to generate an immune response, with peak regions being predicted to be more antigenic.The curve shows average values based on a sliding window approach using an in-house propensity scale. (read more).

If a signal peptide is predicted by a majority of the signal peptide predictors SPOCTOPUS, SignalP 4.0, and Phobius (turquoise) and/or transmembrane regions (orange) are predicted by MDM, these are displayed.

Low complexity regions are shown in yellow and InterPro regions in green. Common (purple) and unique (grey) regions between different splice variants of the gene are also displayed (read more), and at the bottom of the protein view is the protein scale.
MASP1-201
MASP1-202
MASP1-203
MASP1-204
MASP1-205
MASP1-206
MASP1-207
MASP1-208


PROTEIN INFORMATIONi

The protein information section displays alternative protein-coding transcripts (splice variants) encoded by this gene according to the Ensembl database.

The ENSP identifier links to the Ensembl website protein summary, while the ENST identifier links to the Ensembl website transcript summary for the selected splice variant. The data in the UniProt column can be expanded to show links to all matching UniProt identifiers for this protein.

The protein classes assigned to this protein are shown if expanding the data in the protein class column. Parent protein classes are in bold font and subclasses are listed under the parent class.

The Gene Ontology terms assigned to this protein are listed if expanding the Gene ontology column. The length of the protein (amino acid residues according to Ensembl), molecular mass (kDalton), predicted signal peptide (according to a majority of the signal peptide predictors SPOCTOPUS, SignalP 4.0, and Phobius) and the number of predicted transmembrane region(s) (according to MDM) are also reported.
Splice variant UniProt Protein class Gene ontology Length & mass Signal peptide
(predicted)
Transmembrane regions
(predicted)
MASP1-201
ENSP00000169293
ENST00000169293
P48740 [Direct mapping]
Mannan-binding lectin serine protease 1 Mannan-binding lectin serine protease 1 heavy chain Mannan-binding lectin serine protease 1 light chain
Show all
Enzymes
   Peptidases
   Serine-type peptidases
   MEMSAT3 predicted membrane proteins
Predicted secreted proteins
   Secreted proteins predicted by MDSEC
   SignalP predicted secreted proteins
   Phobius predicted secreted proteins
   SPOCTOPUS predicted secreted proteins
Plasma proteins
Disease related genes
Potential drug targets
Human disease related genes
   Congenital malformations
   Other congenital malformations
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Kim et al 2014)
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0001867 [complement activation, lectin pathway]
GO:0002376 [immune system process]
GO:0004252 [serine-type endopeptidase activity]
GO:0005509 [calcium ion binding]
GO:0005515 [protein binding]
GO:0005576 [extracellular region]
GO:0005615 [extracellular space]
GO:0005654 [nucleoplasm]
GO:0005829 [cytosol]
GO:0006508 [proteolysis]
GO:0006898 [receptor-mediated endocytosis]
GO:0006956 [complement activation]
GO:0008233 [peptidase activity]
GO:0008236 [serine-type peptidase activity]
GO:0016787 [hydrolase activity]
GO:0042803 [protein homodimerization activity]
GO:0045087 [innate immune response]
GO:0046872 [metal ion binding]
GO:0048306 [calcium-dependent protein binding]
Show all
380 aa
43.6 kDa
Yes 0
MASP1-202
ENSP00000296280
ENST00000296280
P48740 [Direct mapping]
Mannan-binding lectin serine protease 1 Mannan-binding lectin serine protease 1 heavy chain Mannan-binding lectin serine protease 1 light chain
Show all
Enzymes
   Peptidases
   Serine-type peptidases
   MEMSAT3 predicted membrane proteins
   Phobius predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
Predicted secreted proteins
   Secreted proteins predicted by MDSEC
   SignalP predicted secreted proteins
   Phobius predicted secreted proteins
   SPOCTOPUS predicted secreted proteins
Plasma proteins
Disease related genes
Potential drug targets
Human disease related genes
   Congenital malformations
   Other congenital malformations
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Kim et al 2014)
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0001867 [complement activation, lectin pathway]
GO:0002376 [immune system process]
GO:0004252 [serine-type endopeptidase activity]
GO:0005509 [calcium ion binding]
GO:0005515 [protein binding]
GO:0005576 [extracellular region]
GO:0005615 [extracellular space]
GO:0005654 [nucleoplasm]
GO:0005829 [cytosol]
GO:0006508 [proteolysis]
GO:0006898 [receptor-mediated endocytosis]
GO:0006956 [complement activation]
GO:0008233 [peptidase activity]
GO:0008236 [serine-type peptidase activity]
GO:0016787 [hydrolase activity]
GO:0042803 [protein homodimerization activity]
GO:0045087 [innate immune response]
GO:0045916 [negative regulation of complement activation]
GO:0046872 [metal ion binding]
GO:0048306 [calcium-dependent protein binding]
Show all
728 aa
81.9 kDa
Yes 0
MASP1-203
ENSP00000336792
ENST00000337774
P48740 [Direct mapping]
Mannan-binding lectin serine protease 1 Mannan-binding lectin serine protease 1 heavy chain Mannan-binding lectin serine protease 1 light chain
Show all
Enzymes
   Peptidases
   Serine-type peptidases
   MEMSAT3 predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
Predicted secreted proteins
   Secreted proteins predicted by MDSEC
   SignalP predicted secreted proteins
   Phobius predicted secreted proteins
   SPOCTOPUS predicted secreted proteins
Plasma proteins
Disease related genes
Potential drug targets
Human disease related genes
   Congenital malformations
   Other congenital malformations
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Kim et al 2014)
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0001867 [complement activation, lectin pathway]
GO:0002376 [immune system process]
GO:0004252 [serine-type endopeptidase activity]
GO:0005509 [calcium ion binding]
GO:0005515 [protein binding]
GO:0005576 [extracellular region]
GO:0005615 [extracellular space]
GO:0005654 [nucleoplasm]
GO:0005829 [cytosol]
GO:0006508 [proteolysis]
GO:0006898 [receptor-mediated endocytosis]
GO:0006956 [complement activation]
GO:0008233 [peptidase activity]
GO:0008236 [serine-type peptidase activity]
GO:0016787 [hydrolase activity]
GO:0042803 [protein homodimerization activity]
GO:0045087 [innate immune response]
GO:0046872 [metal ion binding]
GO:0048306 [calcium-dependent protein binding]
Show all
699 aa
79.2 kDa
Yes 0
MASP1-204
ENSP00000376262
ENST00000392470
F8W876 [Direct mapping]
Mannan-binding lectin serine protease 1
Show all
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Human disease related genes
   Congenital malformations
   Other congenital malformations
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0005509 [calcium ion binding]
GO:0005654 [nucleoplasm]
GO:0005829 [cytosol]
Show all
354 aa
40.6 kDa
No 0
MASP1-205
ENSP00000376264
ENST00000392472
P48740 [Direct mapping]
Mannan-binding lectin serine protease 1 Mannan-binding lectin serine protease 1 heavy chain Mannan-binding lectin serine protease 1 light chain
Show all
Enzymes
   Peptidases
   Serine-type peptidases
   Phobius predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Plasma proteins
Disease related genes
Potential drug targets
Human disease related genes
   Congenital malformations
   Other congenital malformations
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0001867 [complement activation, lectin pathway]
GO:0002376 [immune system process]
GO:0004252 [serine-type endopeptidase activity]
GO:0005509 [calcium ion binding]
GO:0005515 [protein binding]
GO:0005576 [extracellular region]
GO:0005615 [extracellular space]
GO:0005654 [nucleoplasm]
GO:0005829 [cytosol]
GO:0006508 [proteolysis]
GO:0006898 [receptor-mediated endocytosis]
GO:0006956 [complement activation]
GO:0008233 [peptidase activity]
GO:0008236 [serine-type peptidase activity]
GO:0016787 [hydrolase activity]
GO:0042803 [protein homodimerization activity]
GO:0045087 [innate immune response]
GO:0046872 [metal ion binding]
GO:0048306 [calcium-dependent protein binding]
Show all
615 aa
68.9 kDa
No 0
MASP1-206
ENSP00000376267
ENST00000392475
C9JMA2 [Direct mapping]
Mannan-binding lectin serine protease 1
Show all
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
Predicted secreted proteins
   Secreted proteins predicted by MDSEC
   SignalP predicted secreted proteins
   Phobius predicted secreted proteins
   SPOCTOPUS predicted secreted proteins
Human disease related genes
   Congenital malformations
   Other congenital malformations
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0005509 [calcium ion binding]
Show all
204 aa
23.7 kDa
Yes 0
MASP1-207
ENSP00000409047
ENST00000425937
C9JLU5 [Direct mapping]
Mannan-binding lectin serine protease 1
Show all
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Human disease related genes
   Congenital malformations
   Other congenital malformations
Protein evidence (Ezkurdia et al 2014)
Show all
55 aa
6.5 kDa
No 0
MASP1-208
ENSP00000412021
ENST00000439271
C9J1C7 [Direct mapping]
Mannan-binding lectin serine protease 1
Show all
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
Predicted secreted proteins
   Secreted proteins predicted by MDSEC
   SignalP predicted secreted proteins
   Phobius predicted secreted proteins
   SPOCTOPUS predicted secreted proteins
Human disease related genes
   Congenital malformations
   Other congenital malformations
Protein evidence (Ezkurdia et al 2014)
Show all
118 aa
13.6 kDa
Yes 0

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The Human Protein Atlas project is funded
by the Knut & Alice Wallenberg Foundation.