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BETA
  • SUMMARY

  • TISSUE

  • BRAIN

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  • IMMUNE

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  • CFI
Protein interactions
Interaction methods
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.

CFI
Synonyms C3b-INA, FI, IF, KAF
Gene descriptioni

Full gene name according to HGNC.

Complement factor I
Protein classi

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

Biomarker genes
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.

Secreted
Protein evidence Evidence at protein level (all genes)

HUMAN PROTEIN ATLAS INFORMATIONi

Summary of RNA expression analysis and annotation data generated within the Human Protein Atlas project.

Single cell type
expression clusteri

The RNA data was used to cluster genes according to their expression across single cell types. Clusters contain genes that have similar expression patterns, and each cluster has been manually annotated to describe common features in terms of function and specificity.

Hepatocytes - Plasma protein synthesis & secretion (mainly)
Single cell type specificityi

The RNA specificity category is based on mRNA expression levels in the analyzed cell types based on scRNA-seq data from normal tissues. The categories include: cell type enriched, group enriched, cell type enhanced, low cell type specificity and not detected.

Cell type enhanced (Hepatocytes)
Tissue expression
cluster (RNA)i

The RNA data was used to cluster genes according to their expression across tissues. Clusters contain genes that have similar expression patterns, and each cluster has been manually annotated to describe common features in terms of function and specificity.

Liver & Kidney - Metabolism (mainly)
Tissue specificity (RNA)i

The RNA specificity category is based on mRNA expression levels in the consensus dataset which is calculated from the RNA expression levels in samples from HPA and GTEX. The categories include: tissue enriched, group enriched, tissue enhanced, low tissue specificity and not detected.

Tissue enriched (Liver)
Subcellular locationi

Main subcellular location based on data generated in the subcellular section of the Human Protein Atlas.

Not available
Secretome annotationi

All genes with at least one predicted secreted isoform have been annotated and classified with the aim to determine if the corresponding protein(s) are:

  • secreted into blood
  • locally secreted
  • or actually being attached to membrane or retained in intracellular locations like mitochondria, endoplasmatic reticulum (ER), Golgi apparatus or lysosomes.
Secreted to blood
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 4
Cytoband q25
Chromosome location (bp) 109731008 - 109802150
Number of transcriptsi

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

4
Ensembl ENSG00000205403 (version 109)
Entrez gene 3426
HGNC HGNC:5394
UniProt P05156
GeneCards CFI
INTERACTIONi

In the Interaction resource network plots showing the gene's first-level interaction partners according to five different datasets are displayed, including a consensus network plot showing only interactions present in at least two of the datasets and an aggregated network displaying interaction from all datasets.Dashed line edges represent interaction pairs only predicted by the deep learning model RosettaFold2-PPI. By clicking on nodes the network can be expanded. In the network plots the nodes represent genes and edge color represent the number of datasets the interaction belongs to. In-house generated AlphaFold 3 predicted 3D structures for interactions in the consensus network are displayed by clicking on the blue symbols on the edges. A blue square on the edge indicate a known heterodimer based on data in the ComplexPortal.

The highlight bar in the top of the plot can be used to color the nodes according to subcellular location (based on data in the Subcellular section), predicted location (based on signalpeptide and transmembrane region predictions), tissue specificity (based on RNA tissue expression profiles), single cell cluster or proteinclass. For genes categorised as single cell type or group specific the option to highlight interaction partners expressed in the same cell type will also be available in the highlight bar.

Custom highlighting of nodes is possible using the top left Filter option in which a query of choice can be built to for example label all nodes that are tissue enriched in both human and mouse brain or those that belongs to a certain tissue expression cluster. The expression cluster for the gene is stated in the box Human Protein Atlas Information above the network plot. Click on Filter in the top left in the plot to find the query builder and some example queries.

Experimentally verified interactions included are direct interaction and physical associations with high and medium confidence from IntAct, physical multivalidated interactions from BioGRID, interactions with>75% probability from BioPlex and significant physical interactions from OpenCell. High precision predicted interactions based on the deep learning model RosettaFold2-PPI are also presented.

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e.g. Brain enriched, Localized to mitochondria, Liver & Kidney - Metabolism

Field
Term
Gene name
Class
Subclass
Category
Keyword
Chromosome
External id
Tissue
Cell type
Expression
Antibody panel
Tissue
Main location
Patient ID
Annotation
Tissue
Category
Tau score
Tissue
Category
Tau score
Tissue
Category
Tau score
Cluster
Reliability
Region
Niche
Category
Brain region
Category
Tau score
Brain domain
Category
Tau score
Cell type
Category
Tau score
Cell type
Category
Tau score
Brain region
Category
Tau score
Brain region
Category
Tau score
Brain region
Category
Tau score
Brain region
Category
Tau score
Cluster
Reliability
Cell type
Category
Tau score
Cell type group
Category
Tau score
Single cell
Category
Tau score
Single cell
Category
Tau score
Annotation
Annotation
Annotation
Tissue
Cell type
Enrichment
Cluster
Cell type
Category
Tau score
Cell lineage
Category
Tau score
Cluster
Location
Searches
Location
Cell line
Class
Type
Phase
Reliability
Cancer
Prognosis
Cancer
Regulation
Cancer
Regulation
Cancer
Category
Cancer
Category
Tau score
Correlation
Correlation
Cancer
Category
Tau score
Cluster
Variants
Source
PTM
ipTM
Interacting gene (ensg_id)
Type
Number of interactions
Type
Heterodimer
Subsystem
Isoforms
Specificity
Expression
Species
Ortholog
Type
Species
Tissue
Category
Species
Tau score
Data
Category
Data
Species
Category
Category
Category
Category
Category
Validation
Validation
Validation
Validation
Antibodies
Data type
Column


Consensus
Aggregated
IntAct
BioGrid
OpenCell
BioPlex
Rosettafold2-PPI
CFI has no defined protein interactions in Consensus.
Number of interactions: 6
Interaction# Consensus# Aggregated# IntAct# BioGrid# OpenCell# BioPlex# Rosettafold2-PPI
AGPAT121492201452
C31401153220
CFH1762000
GLP1R3534642002
KLK1001160001152
POTEI114021120
Number of interactions: 2 View all protein interaction data in IntAct
Interaction# Consensus# Aggregated# IntAct# BioGrid# OpenCell# BioPlex# Rosettafold2-PPI
CFH1762000
GLP1R3534642002
Number of interactions: 2
Interaction# Consensus# Aggregated# IntAct# BioGrid# OpenCell# BioPlex# Rosettafold2-PPI
C31401153220
GLP1R3534642002
CFI has no defined protein interactions in OpenCell.
Number of interactions: 3
Interaction# Consensus# Aggregated# IntAct# BioGrid# OpenCell# BioPlex# Rosettafold2-PPI
AGPAT121492201452
KLK1001160001152
POTEI114021120
CFI has no defined protein interactions in Rosettafold2-PPI.
PROTEIN INFORMATIONi

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

The Splice variant identifier links to the Ensembl website protein summary for the selected splice variant. The data in the Swissprot and TrEMBL columns links to corresponding pages in the UniProt database.

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 length of the protein (amino acid residues according to Ensembl), molecular mass (kDalton), predicted signal peptide and number of predicted transmembrane region(s) according to in-house majority decision methods based on sets of predictors are also reported.

Splice variant SwissProt TrEMBL Protein class Length & mass Signal peptide
(predicted)
Transmembrane regions
(predicted)
CFI-201 P05156
Enzymes
Predicted secreted proteins
Plasma proteins
Disease related genes
Biomarker genes
Potential drug targets
Human disease related genes
Mapped to neXtProt
Protein evidence (Ezkurdia et al 2014)
Show all
583 aa
65.7 kDa
Yes 0
CFI-202 E7ETH0
Predicted secreted proteins
Human disease related genes
Protein evidence (Ezkurdia et al 2014)
591 aa
66.6 kDa
Yes 0
CFI-204 D6R9Z8
Predicted secreted proteins
Human disease related genes
Protein evidence (Ezkurdia et al 2014)
161 aa
18.3 kDa
Yes 0
CFI-205 G3XAM2
Predicted secreted proteins
Human disease related genes
Protein evidence (Ezkurdia et al 2014)
576 aa
65.1 kDa
Yes 0

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