National Cancer Institute Thesaurus

Last uploaded: February 23, 2024
Preferred Name

Complement Factor I
Synonyms

C3B/C4B Inactivator

Complement Control Protein Factor I

EC 3.4.21.45

Complement Factor I

Complement Component I

CFI

Definitions

Complement factor I (583 aa, ~66 kDa) is encoded by the human CFI gene. This protein is involved in proteolytic inactivation of the alpha-chain of C3d and the alpha-chain of C4b, which leads to inhibition of the complement cascade.

ID

http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C198614

code

C198614

DEFINITION

Complement factor I (583 aa, ~66 kDa) is encoded by the human CFI gene. This protein is involved in proteolytic inactivation of the alpha-chain of C3d and the alpha-chain of C4b, which leads to inhibition of the complement cascade.

DesignNote

Complement factor I is synthesized as an inactive preproprotein that is cleaved to produce both heavy and light chains, which are linked by disulfide bonds and form the active heterodimeric glycoprotein. (EntrezGene)

FULL_SYN

C3B/C4B Inactivator

Complement Control Protein Factor I

EC 3.4.21.45

Complement Factor I

Complement Component I

CFI

label

Complement Factor I

OMIM_Number

217030

Preferred_Name

Complement Factor I

prefixIRI

Thesaurus:C198614

Semantic_Type

Amino Acid, Peptide, or Protein

Enzyme

Swiss_Prot

P05156

UMLS_CUI

C1529475

subClassOf

http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C17123

http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C21523

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