Research any topic before you write.

Find related topics. | Discover entities. | See connections. | Build a topical map.

Complement component 4: History, Regions, Measurement & Products

Complement component 4 (C4), in humans, is a protein involved in the intricate complement system, originating from the human leukocyte antigen (HLA) system, which when paired with complement component 2 (C2) is imperative in generating an immune response. C4 serves a number of critical functions in immunity, tolerance, and autoimmunity with the other…

Language: English [EN]
Use the mouse wheel or two fingers (on touchscreens) to zoom in and out of the map.
100%
More settings
100% 100% 100% 100% 100%

Complement component 4 topic overview

The analysis highlights History, Regions, Measurement and Products as prominent areas in the source structure around Complement component 4.

Related topics
34
Source areas
5
Connected nodes
39
Extracted relationships
12
Concept neighborhoods
14
Bridge connections
39

What this topic covers Research coverage

Source areas are shown by the number of related topics found in each part of the analysis. Use smaller areas too: they can reveal specialized angles and content gaps.

Overview · 12 topics
Function and mechanism · 11 topics
Clinical significance · 5 topics
History · 5 topics
Structure · 1 topics

Smaller areas are not necessarily less important. They contain fewer connections in this analysis and can be useful for finding specialized angles or coverage gaps.

Key facts & relationships

High-confidence facts extracted from structured source data. Use them as anchors for further research.

Domains
InterPro
HGNC
1323
Locus
Chr. 6 p21.3
NCBI gene
720
OMIM
120810
RefSeq
NM_007293

Explore all related topics Closing gaps

Browse the complete topic structure, not only the most central items. Less prominent entities and concepts can reveal missing angles, specialized context and useful research gaps. Each item opens a new analysis centered on that subject.

Overview

History

Structure

Function and mechanism

Clinical significance

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

How Complement component 4 connects Entity context

The extracted context around Complement component 4 shows recurring relationship patterns in the source. For example, Complement component 4 → A1-B8-DR3-DQ2, Complement Another extracted example is Complement component 4 → InterPro. Use these groups to spot repeated connection types before inspecting the individual relationships.

Complement component 4

Top relations

see also · 2
Complement component 4 → A1-B8-DR3-DQ2, Complement
Domains · 1
Complement component 4 → InterPro
HGNC · 1
Complement component 4 → 1323
Locus · 1
Complement component 4 → Chr. 6 p21.3
NCBI gene · 1
Complement component 4 → 720
OMIM · 1
Complement component 4 → 120810
RefSeq · 1
Complement component 4 → NM_007293
Search for · 1
Complement component 4 → Search forStructuresSwiss-modelDomainsInterPro
Structures · 1
Complement component 4 → Swiss-model
Symbol · 1
Complement component 4 → C4A

Important terminology

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

c4 c4b c4a gene protein two complement genetic schizophrenia genes number proteins system human complex rccx found et al study

Complement component 4 relationships Subject–Predicate–Object triples

TTTA extracted 12 structured relationships around Complement component 4. Examples in this analysis include Complement component 4 → Domains → InterPro and Complement component 4 → HGNC → 1323. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
Complement component 4DomainsInterPro1.00infobox
Complement component 4HGNC13231.00infobox
Complement component 4LocusChr. 6 p21.31.00infobox
Complement component 4NCBI gene7201.00infobox
Complement component 4OMIM1208101.00infobox
Complement component 4RefSeqNM_0072931.00infobox
Complement component 4Search forSearch forStructuresSwiss-modelDomainsInterPro1.00infobox
Complement component 4StructuresSwiss-model1.00infobox
Complement component 4SymbolC4A1.00infobox
Complement component 4UniProtP0C0L41.00infobox
Complement component 4see alsoComplement0.60section
Complement component 4see alsoA1-B8-DR3-DQ20.60section

Related concept clusters Concept neighborhoods

The concept neighborhoods around Complement component 4 bring nearby vocabulary together. In this analysis, examples include Component, System and Human. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • complement system
    • Component
    • Complement
    • System
    • Human
    • Proteins
    • Protein
    • Three
    • C4
    • Schizophrenia
    • Model
    • Complex
    • C4a
  • c4a
    • C4b
    • Gene
    • Two
    • Found
    • Sequence
    • Human
    • Genes
    • Study
    • Number
    • Genetic
    • Complement
    • Variation
  • c4b
    • Two
    • Gene
    • Protein
    • Sequence
    • Genes
    • Found
    • Study
    • Complex
    • Human
    • Proteins
    • Genetic
    • Variation
  • Complement component 4
    • Component
    • System
    • Human
    • Proteins
    • Protein
    • Three
    • C4
    • Role
    • Schizophrenia
    • Complex
    • Within
    • C4a
  • complement component 4
    • Component
    • Human
    • System
    • Proteins
    • Protein
    • Three
    • C4
    • Sequence
    • Levels
    • Role
    • Gene
    • Schizophrenia
  • human leukocyte antigen
    • Study
    • Two
    • Genetic
    • C4a
    • Within
    • System
    • Gene
    • Sequence
    • C4b
    • Allelic
    • Protein
    • Variation
  • complement component 2
    • Component
    • Human
    • System
    • Proteins
    • Protein
    • Three
    • C4
    • Sequence
    • Levels
    • Role
    • Gene
    • Schizophrenia
  • copy number variation
    • Number
    • Variation
    • Genetic
    • Study
    • Gene
    • Levels
    • Rccx
    • Genes
    • Model
    • Long
    • Within
    • Two

Connections between topic areas Semantic bridges

For Complement component 4, one of the stronger structural bridges in this analysis connects Complement component 4 with Overview. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.

Min side: 3
Complement component 4 — Overview · splits 27 ⟂ 13
Complement component 4 — Function and mechanism · splits 28 ⟂ 12
Complement component 4 — History · splits 34 ⟂ 6
Complement component 4 — Clinical significance · splits 34 ⟂ 6

Map overview Semantic statistics

Complement component 4

Nodes40
Edges39
Triples12
Avg. degree1.95
Density0.05
Components1

Source & methodology

TTTA analyzes the structure around Complement component 4 to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as History, Regions, Measurement & Products, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — Complement component 4 · EN edition · Analysis: TopicsToTalkAbout

For writers, content strategists, SEOs, marketers and creators — from quick topic research to advanced semantic analysis.