variable loop

[/ˈvɛriəbəl luːp/]
nounpl: variable loops
alça variável
1. In immunology, the region of an antibody or T-cell receptor that varies in amino acid sequence among different immune cells, allowing recognition of diverse antigens
The variable loop of the antibody determines its specificity for particular antigens.
A alça variável do anticorpo determina sua especificidade para antígenos particulares.
2. In computer programming, a loop structure whose number of iterations can change based on conditional statements or variable values
The variable loop continues until the counter reaches the specified limit.
A alça variável continua até o contador atingir o limite especificado.
3. In structural biology, a flexible region connecting secondary structures in proteins
The variable loop provides flexibility to the protein structure.
A alça variável oferece flexibilidade à estrutura proteica.
This is specialized terminology primarily used in scientific and medical contexts, particularly in immunology and molecular biology. It appears in research publications, academic courses, and laboratory settings in both Brazil and the USA. The term is relatively consistent across English and Portuguese scientific communities, though Brazilian scientists may also encounter the English term directly in international publications.
Synonyms / Sinônimos
hypervariable regionCDR (complementarity-determining region)flexible loopvariable region
Antonyms / Antônimos
constant regionfixed loopinvariant region

Regional Variations

General Brazilian Portuguese
alça variável
Standard term used in immunology and molecular biology contexts
Portugal
ciclo variável / ansa variável
Alternative term occasionally used in European Portuguese scientific contexts
Technical/Scientific Communities
região hipervariável
Often used as synonymous term in immunological literature

Related Words

antibodyimmunoglobulinantigenT-cell receptorhypervariable regionloop structureamino acid sequenceprotein folding

Related Idioms & Phrases

break out of the loop - sair do ciclo/alça
loop back - retornar à alça
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