LDX corresponds to an LD isoenzyme found in which tissue?

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Multiple Choice

LDX corresponds to an LD isoenzyme found in which tissue?

Explanation:
LDX refers to the LDH-X isoenzyme, a testis- or sperm-specific form of lactate dehydrogenase. This isozyme is produced from the LDHC gene and is predominantly found in sperm and testes to support energy production for sperm motility in the reproductive tract. Other tissues like liver, muscle, and brain express the common LDH isoforms (combinations of H and M subunits) in different patterns, but the testis-specific LDH-X is not a major form there. That’s why the correct tissue association for LDX is human sperm.

LDX refers to the LDH-X isoenzyme, a testis- or sperm-specific form of lactate dehydrogenase. This isozyme is produced from the LDHC gene and is predominantly found in sperm and testes to support energy production for sperm motility in the reproductive tract. Other tissues like liver, muscle, and brain express the common LDH isoforms (combinations of H and M subunits) in different patterns, but the testis-specific LDH-X is not a major form there. That’s why the correct tissue association for LDX is human sperm.

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