Cellular component - Host
- DefinitionThe host is any organism in which another organism, or symbiont, spends part or all of its life cycle. Most animals and plants live symbiotically with microorganisms. The larger organism is called the host and smaller organism the symbiont. When the interactions between the symbiont and the host benefits both partners, the symbiotic interaction is called mutualism. When there is a negative effect on one of the partners, it is called a parasitic symbiosis and if there is no beneficial or negative effect it is a commensal symbiosis. These clear-cut definitions are not always easy to apply in nature. Take the bacterium Pseudomonas aeruginosa for example. This bacterium can be found on the skin of humans and not cause disease, perhaps we would call it a commensial, but if the person has a severe burn P. aeruginosa can cause an infection and becomes a pathogen (a medicinal term for parasitism). This type of organism is called an opportunistic pathogen. Whether an association is a mutualist, commensal or parasitic depends on the relative "strengths" of the partners and the balance of power can change over time.
- CategoryCellular component
- Gene Ontology (GO)
- ContentHost
- Links
Related UniProtKB entries
Browse all 15,484 entries- Xyloglucan-specific endo-beta-1,4-glucanase 1 · Gene: XEG1 · Phytophthora sojae (strain P6497) (Soybean stem and root rot agent) (Phytophthora megasperma f. sp. glycines) · EC:3.2.1.151 · 241 amino acids · Evidence at protein level · Annotation score: 5/5
- Endo-beta-N-acetylglucosaminidase EndoS2 · Gene: endoS2 · Streptococcus pyogenes serotype M49 · EC:3.2.1.96 · 843 amino acids · Evidence at protein level · Annotation score: 5/5
- Endo-beta-N-acetylglucosaminidase EndoS · Gene: endoS · Streptococcus pyogenes serotype M1 · EC:3.2.1.96 · 995 amino acids · Evidence at protein level · Annotation score: 5/5
- Capsid polyprotein VP90 · Gene: ORF2 · Human astrovirus-1 (HAstV-1) · 786 amino acids · Evidence at protein level · Annotation score: 5/5
- Capsid polyprotein VP90 · Gene: ORF2 · Human astrovirus-8 (HAstV-8) · 782 amino acids · Evidence at protein level · Annotation score: 5/5
- P3N-PIPO polyprotein · Tobacco etch virus (TEV) · 1016 amino acids · Evidence at protein level · Annotation score: 5/5
- P3N-PIPO polyprotein · Turnip mosaic virus (strain Japanese) (TuMV) · 1043 amino acids · Evidence at protein level · Annotation score: 5/5
- Streptopain · Gene: speB · Streptococcus pyogenes · EC:3.4.22.10 · 398 amino acids · Evidence at protein level · Annotation score: 5/5
- Streptopain · Gene: speB · Streptococcus pyogenes serotype M18 (strain MGAS8232) · EC:3.4.22.10 · 398 amino acids · Inferred from homology · Annotation score: 5/5
- Streptopain · Gene: speB · Streptococcus pyogenes serotype M1 · EC:3.4.22.10 · 398 amino acids · Evidence at protein level · Annotation score: 5/5
- Protein Vpr · Gene: vpr · Human immunodeficiency virus type 1 group M subtype B (isolate NY5) (HIV-1) · 96 amino acids · Evidence at protein level · Annotation score: 5/5
- Streptopain · Gene: speB · Streptococcus pyogenes serotype M28 (strain MGAS6180) · EC:3.4.22.10 · 398 amino acids · Inferred from homology · Annotation score: 5/5
- Streptopain · Gene: speB · Streptococcus pyogenes serotype M3 (strain ATCC BAA-595 / MGAS315) · EC:3.4.22.10 · 398 amino acids · Inferred from homology · Annotation score: 5/5
- Streptopain · Gene: speB · Streptococcus pyogenes serotype M6 (strain ATCC BAA-946 / MGAS10394) · EC:3.4.22.10 · 398 amino acids · Inferred from homology · Annotation score: 5/5
- Protein Vpr · Gene: vpr · Human immunodeficiency virus type 1 group M subtype B (isolate BRU/LAI) (HIV-1) · 96 amino acids · Evidence at protein level · Annotation score: 5/5
- Protein Vpr · Gene: vpr · Human immunodeficiency virus type 1 group M subtype B (isolate HXB2) (HIV-1) · 96 amino acids · Evidence at protein level · Annotation score: 5/5
- RNA2 polyprotein · Red clover mottle virus (RCMV) · 996 amino acids · Evidence at protein level · Annotation score: 5/5
- RNA2 polyprotein · Bean-pod mottle virus (strain Kentucky G7) (BPMV) · 1018 amino acids · Evidence at protein level · Annotation score: 5/5
- RNA2 polyprotein · Cowpea severe mosaic virus (strain DG) (CPSMV) · 1002 amino acids · Evidence at protein level · Annotation score: 5/5
- Nucleoprotein · Gene: N · Severe acute respiratory syndrome coronavirus 2 (2019-nCoV) (SARS-CoV-2) · 419 amino acids · Evidence at protein level · Annotation score: 5/5
- RNA2 polyprotein · Cowpea mosaic virus (strain SB) (CPMV) · 1046 amino acids · Evidence at protein level · Annotation score: 5/5
- RNA2 polyprotein · Broad bean wilt virus 2 (BBWV-2) · 1065 amino acids · Evidence at protein level · Annotation score: 5/5
- Suppressor of RNA silencing · Barley stripe mosaic virus (BSMV) · 153 amino acids · Evidence at protein level · Annotation score: 5/5
- Readthrough protein P3-RTD · Gene: ORF3/ORF5 · Turnip yellows virus (isolate FL-1) (TuYV) (BWYV-FL1) · 670 amino acids · Evidence at protein level · Annotation score: 5/5
- Movement protein · Gene: MP · Tomato mosaic virus (strain L) (ToMV) (TMV strain tomato) · 264 amino acids · Evidence at protein level · Annotation score: 5/5