2 syllables: Lig, ase. Stress on Lig.
LEYE-gayz
/ˈlaɪɡeɪz/
Ligase is pronounced LEYE-gayz (/ˈlaɪɡeɪz/). It has two syllables (Lig-ase), with the stress on "Lig". Ligase is a type of enzyme that facilitates the joining of DNA strands by forming a phosphodiester bond. It is essential in DNA replication and repair processes, catalyzing the covalent linkage of adjacent nucleotides. In biochemistry, ligases enable the sealing of nicks in double-stranded DNA to maintain genome integrity.
nounLigase is a type of enzyme that facilitates the joining of DNA strands by forming a phosphodiester bond. It is essential in DNA replication and repair processes, catalyzing the covalent linkage of adjacent nucleotides. In biochemistry, ligases enable the sealing of nicks in double-stranded DNA to maintain genome integrity.
How to Pronounce Ligase
"The ligase enzyme seals the gaps in the DNA backbone after replication."
"Researchers used a DNA ligase to join fragments in the plasmid vector."
"Mutations in ligase activity can lead to faulty DNA repair mechanisms."
Ligase is pronounced LI-gase, with primary stress on LI and a long a in the second syllable: /ˈlaɪˌɡeɪz/ in US, and a similar /ˈlaɪ.ɡeɪz/ in UK and AU. Think: LI (eye) + -gase (gaze). The final -ase sounds like -aze. In careful speech, the two-syllable rhythm is.alert; you’ll hear a gentle secondary stress on the second syllable in some contexts.
Common mistakes include pronouncing it as LI-GAS or LI-GAS-e, misplacing the vowel length, and flattening the -eɪz to -ɪs or -əs. To correct: maintain the long -eɪ sound in the second syllable and keep the final z sound crisp: /ˈlaɪˌɡeɪz/. Avoid voicing confusion with ligature or ligoid terms. Practice the transition between /laɪ/ and /ɡeɪ/ with a quick glide to ensure the -eɪz lands as a single syllable beat.
Across US/UK/AU, ligase remains two syllables with /ˈlaɪ/ for the first, and /ˌɡeɪz/ for the second. US pronunciation tends to be fully rhotic with a clear /ɹ/ influence on neighboring words, while UK and AU may show a slightly shorter /eɪ/ diphthong and less rhoticity in connected speech. The primary difference is rhythm and vowel quality rather than a different phoneme set. In all accents, the final -ase remains /eɪz/.
The challenge lies in the two-syllable structure with a preceding /ɪ/ or /aɪ/ diphthong and a clear, long -eɪ sound followed by a voiced -z. The transition from /laɪ/ to /ɡeɪz/ requires precise timing; misplacing the glottal stop or reducing the second syllable can blur the word. Additionally, the -ase ending often cues a plural-looking or pluralizable form, prompting hesitations. Practice steady, two-syllable rhythm: /ˈlaɪˌɡeɪz/.
A unique feature is the explicit two-stress pattern within a monosyllabic leading element and a secondary stress on the second component: LI-gase. The secondary stress is typical in many two-syllable technical terms borrowed from Latin roots where the second syllable carries emphasis; this pattern helps listeners distinguish ligase from similar terms like ligature or ligament. Focus on producing a crisp /ˈlaɪ/ followed by a clear /ˌɡeɪz/.
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Ligase originates from the combination of the Latin word ligare, meaning to bind or tie, with the suffix -ase used to denote enzymes. The term reflects the enzyme’s primary function of binding DNA substrates. The root lig- (bind) appears in many related biology terms such as ligation and ligament (though ligament has a different etymology, sharing the bind concept). The earliest usage of ligase in scientific literature dates to the mid-20th century, aligning with advances in molecular biology and DNA manipulation techniques. The concept of ligation as a chemical joining process was recognized prior to the formal naming of a specific enzyme, but the modern designation ligase emerged with the rise of enzymology, particularly in the 1960s–1980s, as researchers distinguished ligases (joining activities) from nucleases (cleaving activities). Over time, multiple classes of ligases were identified (e.g., DNA ligase I, II, III, IV) with specialized roles in replication, repair, and recombination, each named to reflect their substrate preferences and cellular functions. The term has since become foundational in genetics, biotechnology, and molecular cloning workflows, where ligases are indispensable for constructing recombinant DNA molecules and for in vivo DNA repair studies.
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💡 These words have similar meanings to "Ligase" and can often be used interchangeably.
🔄 These words have opposite meanings to "Ligase" and show contrast in usage.
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Words that rhyme with "Ligase"
-ise sounds
-ize sounds
Practice with these rhyming pairs to improve your pronunciation consistency:
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