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CD55 molecule (Cromer blood group)

Summary

Gene Symbol

CD55

Organism

Physeter catodon (sperm whale)

External Links

NCBI Gene: 102976693
KEGG Gene ID: pcad:102976693
PubChem: 102976693

Annotation

Keyword

Complement pathway
Disulfide bond
Glycoprotein
Membrane
Reference proteome
Repeat
Signal
Sushi
Transmembrane helix

Proteins

Displaying **all 4** entries
UniProt	Protein Name
A0A9W2WLM3
A0A2Y9TH95
A0A2Y9TKI8
A0A2Y9TK82

Annotation information from UniProt.

Gene Ontology (GO)

Displaying **all 2** entries
GO Term	Evidence Code	PMID
T cell mediated immunity	IEA	30032202
negative regulation of complement activation, classical pathway	IEA	30032202

GO Hierarchy

biological process

immune system process [inference]

immune effector process [inference]

leukocyte mediated immunity [inference]

lymphocyte mediated immunity [inference]

T cell mediated immunity

immune response [inference]

adaptive immune response [inference]

adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains [inference]

T cell mediated immunity

response to stimulus [inference]

immune response [inference]

adaptive immune response [inference]

adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains [inference]

T cell mediated immunity

biological regulation [inference]

regulation of biological process [inference]

regulation of immune system process [inference]

negative regulation of immune system process [inference]

negative regulation of immune effector process [inference]

negative regulation of leukocyte mediated immunity [inference]

negative regulation of lymphocyte mediated immunity [inference]

negative regulation of B cell mediated immunity [inference]

negative regulation of immunoglobulin mediated immune response [inference]

negative regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of complement activation, classical pathway

negative regulation of complement activation [inference]

negative regulation of complement activation, classical pathway

negative regulation of immune response [inference]

negative regulation of adaptive immune response [inference]

negative regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains [inference]

negative regulation of B cell mediated immunity [inference]

negative regulation of immunoglobulin mediated immune response [inference]

negative regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of complement activation, classical pathway

negative regulation of humoral immune response [inference]

negative regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of complement activation, classical pathway

negative regulation of complement activation [inference]

negative regulation of complement activation, classical pathway

regulation of immune effector process [inference]

negative regulation of immune effector process [inference]

negative regulation of leukocyte mediated immunity [inference]

negative regulation of lymphocyte mediated immunity [inference]

negative regulation of B cell mediated immunity [inference]

negative regulation of immunoglobulin mediated immune response [inference]

negative regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of complement activation, classical pathway

negative regulation of complement activation [inference]

negative regulation of complement activation, classical pathway

regulation of leukocyte mediated immunity [inference]

negative regulation of leukocyte mediated immunity [inference]

negative regulation of lymphocyte mediated immunity [inference]

negative regulation of B cell mediated immunity [inference]

negative regulation of immunoglobulin mediated immune response [inference]

negative regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of complement activation, classical pathway

regulation of lymphocyte mediated immunity [inference]

negative regulation of lymphocyte mediated immunity [inference]

negative regulation of B cell mediated immunity [inference]

negative regulation of immunoglobulin mediated immune response [inference]

negative regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of complement activation, classical pathway

regulation of B cell mediated immunity [inference]

negative regulation of B cell mediated immunity [inference]

negative regulation of immunoglobulin mediated immune response [inference]

negative regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of complement activation, classical pathway

regulation of immunoglobulin mediated immune response [inference]

negative regulation of immunoglobulin mediated immune response [inference]

negative regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of complement activation, classical pathway

regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of complement activation, classical pathway

regulation of complement activation, classical pathway [inference]

negative regulation of complement activation, classical pathway

regulation of complement activation [inference]

regulation of complement activation, classical pathway [inference]

negative regulation of complement activation, classical pathway

negative regulation of complement activation [inference]

negative regulation of complement activation, classical pathway

regulation of immune response [inference]

regulation of adaptive immune response [inference]

negative regulation of adaptive immune response [inference]

negative regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains [inference]

negative regulation of B cell mediated immunity [inference]

negative regulation of immunoglobulin mediated immune response [inference]

negative regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of complement activation, classical pathway

regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains [inference]

regulation of B cell mediated immunity [inference]

negative regulation of B cell mediated immunity [inference]

negative regulation of immunoglobulin mediated immune response [inference]

negative regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of complement activation, classical pathway

regulation of immunoglobulin mediated immune response [inference]

negative regulation of immunoglobulin mediated immune response [inference]

negative regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of complement activation, classical pathway

regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of complement activation, classical pathway

regulation of complement activation, classical pathway [inference]

negative regulation of complement activation, classical pathway

negative regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains [inference]

negative regulation of B cell mediated immunity [inference]

negative regulation of immunoglobulin mediated immune response [inference]

negative regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of complement activation, classical pathway

regulation of humoral immune response [inference]

negative regulation of humoral immune response [inference]

negative regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of complement activation, classical pathway

negative regulation of complement activation [inference]

negative regulation of complement activation, classical pathway

regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of complement activation, classical pathway

regulation of complement activation, classical pathway [inference]

negative regulation of complement activation, classical pathway

regulation of complement activation [inference]

regulation of complement activation, classical pathway [inference]

negative regulation of complement activation, classical pathway

negative regulation of complement activation [inference]

negative regulation of complement activation, classical pathway

negative regulation of immune response [inference]

negative regulation of adaptive immune response [inference]

negative regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains [inference]

negative regulation of B cell mediated immunity [inference]

negative regulation of immunoglobulin mediated immune response [inference]

negative regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of complement activation, classical pathway

negative regulation of humoral immune response [inference]

negative regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of complement activation, classical pathway

negative regulation of complement activation [inference]

negative regulation of complement activation, classical pathway

negative regulation of biological process [inference]

negative regulation of immune system process [inference]

negative regulation of immune effector process [inference]

negative regulation of leukocyte mediated immunity [inference]

negative regulation of lymphocyte mediated immunity [inference]

negative regulation of B cell mediated immunity [inference]

negative regulation of immunoglobulin mediated immune response [inference]

negative regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of complement activation, classical pathway

negative regulation of complement activation [inference]

negative regulation of complement activation, classical pathway

negative regulation of immune response [inference]

negative regulation of adaptive immune response [inference]

negative regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains [inference]

negative regulation of B cell mediated immunity [inference]

negative regulation of immunoglobulin mediated immune response [inference]

negative regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of complement activation, classical pathway

negative regulation of humoral immune response [inference]

negative regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of complement activation, classical pathway

negative regulation of complement activation [inference]

negative regulation of complement activation, classical pathway

negative regulation of response to stimulus [inference]

negative regulation of immune response [inference]

negative regulation of adaptive immune response [inference]

negative regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains [inference]

negative regulation of B cell mediated immunity [inference]

negative regulation of immunoglobulin mediated immune response [inference]

negative regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of complement activation, classical pathway

negative regulation of humoral immune response [inference]

negative regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of complement activation, classical pathway

negative regulation of complement activation [inference]

negative regulation of complement activation, classical pathway

regulation of response to stimulus [inference]

negative regulation of response to stimulus [inference]

negative regulation of immune response [inference]

negative regulation of adaptive immune response [inference]

negative regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains [inference]

negative regulation of B cell mediated immunity [inference]

negative regulation of immunoglobulin mediated immune response [inference]

negative regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of complement activation, classical pathway

negative regulation of humoral immune response [inference]

negative regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of complement activation, classical pathway

negative regulation of complement activation [inference]

negative regulation of complement activation, classical pathway

regulation of immune response [inference]

regulation of adaptive immune response [inference]

negative regulation of adaptive immune response [inference]

negative regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains [inference]

negative regulation of B cell mediated immunity [inference]

negative regulation of immunoglobulin mediated immune response [inference]

negative regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of complement activation, classical pathway

regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains [inference]

regulation of B cell mediated immunity [inference]

negative regulation of B cell mediated immunity [inference]

negative regulation of immunoglobulin mediated immune response [inference]

negative regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of complement activation, classical pathway

regulation of immunoglobulin mediated immune response [inference]

negative regulation of immunoglobulin mediated immune response [inference]

negative regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of complement activation, classical pathway

regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of complement activation, classical pathway

regulation of complement activation, classical pathway [inference]

negative regulation of complement activation, classical pathway

negative regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains [inference]

negative regulation of B cell mediated immunity [inference]

negative regulation of immunoglobulin mediated immune response [inference]

negative regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of complement activation, classical pathway

regulation of humoral immune response [inference]

negative regulation of humoral immune response [inference]

negative regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of complement activation, classical pathway

negative regulation of complement activation [inference]

negative regulation of complement activation, classical pathway

regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of complement activation, classical pathway

regulation of complement activation, classical pathway [inference]

negative regulation of complement activation, classical pathway

regulation of complement activation [inference]

regulation of complement activation, classical pathway [inference]

negative regulation of complement activation, classical pathway

negative regulation of complement activation [inference]

negative regulation of complement activation, classical pathway

negative regulation of immune response [inference]

negative regulation of adaptive immune response [inference]

negative regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains [inference]

negative regulation of B cell mediated immunity [inference]

negative regulation of immunoglobulin mediated immune response [inference]

negative regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of complement activation, classical pathway

negative regulation of humoral immune response [inference]

negative regulation of humoral immune response mediated by circulating immunoglobulin [inference]

negative regulation of complement activation, classical pathway

negative regulation of complement activation [inference]

negative regulation of complement activation, classical pathway

Displaying **all 2** entries
GO Term	Evidence Code	PMID
extracellular space	IEA	30032202
plasma membrane	IEA	30032202

GO Hierarchy

cellular component

cellular anatomical entity [inference]

extracellular space

membrane [inference]

plasma membrane

Gene Ontology information from NCBI Gene and UniProt.

OrthoDB (Group)

Group level

Eukaryota

Group Name

procollagen C-endopeptidase enhancer a

Functional Category

M: Cell wall/membrane/envelope biogenesis
O: Posttranslational modification, protein turnover, chaperones
T: Signal transduction mechanisms

KEGG BRITE Database

Orthology

K04006

Name

decay accelerating factor

References

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GlyCosmos Portal v4.4.0

Last updated: December 8, 2025

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Acknowledgements