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complement component 4 binding protein alpha

Summary

Gene Symbol

C4BPA

Organism

Bos taurus (domestic cattle)

External Links

NCBI Gene: 281651
PubChem: 281651

Annotation

Keyword

Complement pathway
Disulfide bond
Glycoprotein
Reference proteome
Repeat
Secreted
Signal
Sushi

Proteins

Displaying **all 3** entries
UniProt	Protein Name
A0AAF6YU71
Q28065
A0ABI0P573

Annotation information from UniProt.

Gene Ontology (GO)

Displaying **all 4** entries
GO Term	Evidence Code	PMID
T cell mediated immunity	IEA	30032202
complement activation, classical pathway
innate immune response
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

complement activation [inference]

complement activation, classical pathway

activation of immune response [inference]

complement activation [inference]

complement activation, classical pathway

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

humoral immune response [inference]

complement activation [inference]

complement activation, classical pathway

innate immune response

biological process involved in interspecies interaction between organisms [inference]

response to other organism [inference]

defense response to other organism [inference]

innate immune response

response to stimulus [inference]

response to stress [inference]

defense response [inference]

defense response to other organism [inference]

innate immune response

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

humoral immune response [inference]

complement activation [inference]

complement activation, classical pathway

innate immune response

response to external stimulus [inference]

response to external biotic stimulus [inference]

response to other organism [inference]

defense response to other organism [inference]

innate immune response

response to biotic stimulus [inference]

response to external biotic stimulus [inference]

response to other organism [inference]

defense response to other organism [inference]

innate immune response

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

positive regulation of immune system process [inference]

positive regulation of immune response [inference]

activation of immune response [inference]

complement activation [inference]

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

positive regulation of immune response [inference]

activation of immune response [inference]

complement activation [inference]

complement activation, classical pathway

positive regulation of biological process [inference]

positive regulation of immune system process [inference]

positive regulation of immune response [inference]

activation of immune response [inference]

complement activation [inference]

complement activation, classical pathway

positive regulation of response to stimulus [inference]

positive regulation of immune response [inference]

activation of immune response [inference]

complement activation [inference]

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]

positive regulation of response to stimulus [inference]

positive regulation of immune response [inference]

activation of immune response [inference]

complement activation [inference]

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 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

positive regulation of immune response [inference]

activation of immune response [inference]

complement activation [inference]

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

zona pellucida sperm-binding protein 3 receptor

Functional Category

G: Carbohydrate transport and metabolism
O: Posttranslational modification, protein turnover, chaperones
T: Signal transduction mechanisms

Displaying **all 2** entries
Gene Ontology
T cell mediated immunity
negative regulation of complement activation, classical pathway

Displaying **all 2** entries
InterPro
Sushi/SCR/CCP domain
Sushi/SCR/CCP superfamily

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Last updated: April 6, 2026

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