MeSH Browser

MeSH Heading: Complement Factor I
Tree Number(s): D08.811.277.656.300.760.210; D08.811.277.656.959.350.210; D12.776.124.486.274.920.325.210
Unique ID: D017244
RDF Unique Identifier: http://id.nlm.nih.gov/mesh/D017244
Annotation: do not confuse with FACTOR I see FIBRINOGEN
Scope Note: A plasma serine proteinase that cleaves the alpha-chains of C3b and C4b in the presence of the cofactors COMPLEMENT FACTOR H and C4-binding protein, respectively. It is a 66-kDa glycoprotein that converts C3b to inactivated C3b (iC3b) followed by the release of two fragments, C3c (150-kDa) and C3dg (41-kDa). It was formerly called KAF, C3bINF, or enzyme 3b inactivator.
Entry Term(s): C3b Inactivator; C3b-C4b Inactivator; C4b-C3b-INA; C4bC3bINA; Complement 3b-Complement 4b Inactivator; Complement C4b-C3b Inactivator
Pharm Action: Complement Inactivating Agents
Registry Number: EC 3.4.21.45
Previous Indexing: Peptide Peptidohydrolases (1983-1987); Serine Proteinases (1988-1992)
Public MeSH Note: 93; COMPLEMENT FACTOR I was indexed under SERINE PROTEINASES 1988-92 & under PEPTIDE PEPTIDOHYDROLASES 1983-87
Online Note: use COMPLEMENT FACTOR I (NM) to search FACTOR I, C 3B INACTIVATOR 1983-92
History Note: 93; was FACTOR I, C 3B INACTIVATOR (NM) 1983-92
Date Established: 1993/01/01
Date of Entry: 1992/05/07
Revision Date: 2009/07/06

Allowable Qualifiers: administration & dosage (AD)

adverse effects (AE)

agonists (AG)

analysis (AN)

antagonists & inhibitors (AI)

biosynthesis (BI)

cerebrospinal fluid (CF)

chemical synthesis (CS)

chemistry (CH)

classification (CL)

deficiency (DF)

drug effects (DE)

economics (EC)

genetics (GE)

history (HI)

immunology (IM)

isolation & purification (IP)

metabolism (ME)

pharmacokinetics (PK)

pharmacology (PD)

physiology (PH)

poisoning (PO)

radiation effects (RE)

standards (ST)

supply & distribution (SD)

therapeutic use (TU)

toxicity (TO)

ultrastructure (UL)

urine (UR)

Enzymes and Coenzymes [D08]
- Enzymes [D08.811]
  - Hydrolases [D08.811.277]
    - Peptide Hydrolases [D08.811.277.656]
      - Endopeptidases [D08.811.277.656.300]
        
        Serine Endopeptidases [D08.811.277.656.300.760]
        
        Acrosin [D08.811.277.656.300.760.030]
        
        Cathepsin G [D08.811.277.656.300.760.066]
        
        Chymases [D08.811.277.656.300.760.103]
        
        Chymotrypsin [D08.811.277.656.300.760.176]
        
        Complement Factor B [D08.811.277.656.300.760.198]
        
        Complement Factor D [D08.811.277.656.300.760.200]
        
        Complement Factor I [D08.811.277.656.300.760.210]
        
        Endopeptidase K [D08.811.277.656.300.760.247]
        
        Enteropeptidase [D08.811.277.656.300.760.284]
        
        Factor VIIa [D08.811.277.656.300.760.300]
        
        Factor IXa [D08.811.277.656.300.760.310]
        
        Factor Xa [D08.811.277.656.300.760.315]
        
        Factor XIa [D08.811.277.656.300.760.320]
        
        Factor XIIa [D08.811.277.656.300.760.324]
        
        Fibrinolysin [D08.811.277.656.300.760.330]
        
        Furin [D08.811.277.656.300.760.353]
        
        Granzymes [D08.811.277.656.300.760.397]
        
        High-Temperature Requirement A Serine Peptidase 1 [D08.811.277.656.300.760.420]
        
        High-Temperature Requirement A Serine Peptidase 2 [D08.811.277.656.300.760.431]
        
        Kallikreins [D08.811.277.656.300.760.442]
        
        Lactoferrin [D08.811.277.656.300.760.471]
        
        Mannose-Binding Protein-Associated Serine Proteases [D08.811.277.656.300.760.501]
        
        Myeloblastin [D08.811.277.656.300.760.530]
        
        Pancreatic Elastase [D08.811.277.656.300.760.560]
        
        Plasminogen Activators [D08.811.277.656.300.760.635]
        
        Prolyl Oligopeptidases [D08.811.277.656.300.760.637]
        
        Pronase [D08.811.277.656.300.760.638]
        
        Proprotein Convertase 1 [D08.811.277.656.300.760.640]
        
        Proprotein Convertase 2 [D08.811.277.656.300.760.646]
        
        Proprotein Convertase 5 [D08.811.277.656.300.760.648]
        
        Proprotein Convertase 9 [D08.811.277.656.300.760.718]
        
        Reelin Protein [D08.811.277.656.300.760.753]
        
        Subtilisins [D08.811.277.656.300.760.787]
        
        Thrombin [D08.811.277.656.300.760.855]
        
        Tissue Plasminogen Activator [D08.811.277.656.300.760.875]
        
        Trypsin [D08.811.277.656.300.760.895]
        
        Tryptases [D08.811.277.656.300.760.902]
        
        Urokinase-Type Plasminogen Activator [D08.811.277.656.300.760.910]
        
        Venombin A [D08.811.277.656.300.760.955]

Enzymes and Coenzymes [D08]
- Enzymes [D08.811]
  - Hydrolases [D08.811.277]
    - Peptide Hydrolases [D08.811.277.656]
      - Serine Proteases [D08.811.277.656.959]
        
        Serine Endopeptidases [D08.811.277.656.959.350]
        
        Acrosin [D08.811.277.656.959.350.030]
        
        Cathepsin G [D08.811.277.656.959.350.066]
        
        Chymases [D08.811.277.656.959.350.103]
        
        Chymotrypsin [D08.811.277.656.959.350.176]
        
        Complement Factor B [D08.811.277.656.959.350.198]
        
        Complement Factor D [D08.811.277.656.959.350.200]
        
        Complement Factor I [D08.811.277.656.959.350.210]
        
        Endopeptidase K [D08.811.277.656.959.350.247]
        
        Enteropeptidase [D08.811.277.656.959.350.284]
        
        Factor VIIa [D08.811.277.656.959.350.300]
        
        Factor IXa [D08.811.277.656.959.350.310]
        
        Factor Xa [D08.811.277.656.959.350.315]
        
        Factor XIa [D08.811.277.656.959.350.320]
        
        Factor XIIa [D08.811.277.656.959.350.324]
        
        Fibrinolysin [D08.811.277.656.959.350.330]
        
        Furin [D08.811.277.656.959.350.353]
        
        Granzymes [D08.811.277.656.959.350.397]
        
        High-Temperature Requirement A Serine Peptidase 1 [D08.811.277.656.959.350.420]
        
        High-Temperature Requirement A Serine Peptidase 2 [D08.811.277.656.959.350.431]
        
        Kallikreins [D08.811.277.656.959.350.442]
        
        Lactoferrin [D08.811.277.656.959.350.471]
        
        Mannose-Binding Protein-Associated Serine Proteases [D08.811.277.656.959.350.501]
        
        Myeloblastin [D08.811.277.656.959.350.530]
        
        Pancreatic Elastase [D08.811.277.656.959.350.560]
        
        Plasminogen Activators [D08.811.277.656.959.350.635]
        
        Pronase [D08.811.277.656.959.350.638]
        
        Proprotein Convertase 1 [D08.811.277.656.959.350.640]
        
        Proprotein Convertase 2 [D08.811.277.656.959.350.646]
        
        Proprotein Convertase 5 [D08.811.277.656.959.350.648]
        
        Proprotein Convertase 9 [D08.811.277.656.959.350.718]
        
        Reelin Protein [D08.811.277.656.959.350.753]
        
        Subtilisins [D08.811.277.656.959.350.787]
        
        Thrombin [D08.811.277.656.959.350.855]
        
        Tissue Plasminogen Activator [D08.811.277.656.959.350.875]
        
        Trypsin [D08.811.277.656.959.350.895]
        
        Tryptases [D08.811.277.656.959.350.902]
        
        Urokinase-Type Plasminogen Activator [D08.811.277.656.959.350.910]
        
        Venombin A [D08.811.277.656.959.350.955]

Amino Acids, Peptides, and Proteins [D12]
- Proteins [D12.776]
  - Blood Proteins [D12.776.124]
    - Immunoproteins [D12.776.124.486]
      - Complement System Proteins [D12.776.124.486.274]
        
        Complement Inactivator Proteins [D12.776.124.486.274.920]
        
        Complement C3b Inactivator Proteins [D12.776.124.486.274.920.325]
        
        Complement Factor H [D12.776.124.486.274.920.325.200]
        
        Complement Factor I [D12.776.124.486.274.920.325.210]

Complement Factor I Preferred

Concept UI: M0026165
Registry Number: EC 3.4.21.45
Scope Note: A plasma serine proteinase that cleaves the alpha-chains of C3b and C4b in the presence of the cofactors COMPLEMENT FACTOR H and C4-binding protein, respectively. It is a 66-kDa glycoprotein that converts C3b to inactivated C3b (iC3b) followed by the release of two fragments, C3c (150-kDa) and C3dg (41-kDa). It was formerly called KAF, C3bINF, or enzyme 3b inactivator.
Terms: Complement Factor I Preferred Term
Term UI T051406
Date01/01/1999
LexicalTag NON
ThesaurusID NLM (1993); C4b-C3b-INA
Term UI T122015
LexicalTag NON
ThesaurusID NLM (2006); C3b Inactivator
Term UI T621749
Date12/03/2004
LexicalTag NON
ThesaurusID NLM (2006); C4bC3bINA
Term UI T601207
Date08/02/2004
LexicalTag NON
ThesaurusID NLM (2006); Complement C4b-C3b Inactivator
Term UI T601208
Date08/02/2004
LexicalTag NON
ThesaurusID NLM (2006); C3b-C4b Inactivator
Term UI T122012
LexicalTag NON
ThesaurusID NLM (2006); Complement 3b-Complement 4b Inactivator
Term UI T122017
LexicalTag NON
ThesaurusID NLM (2006)

Complement Factor I MeSH Descriptor Data 2023