Q. 16.40 - An Introduction to General, Organic, and Biological Chemistry

Question

How is the $LDH$ isoenzyme in the heart different from the $LDH$ isoenzyme in the liver?

Step-by-Step Solution

Answer

The heart's $LDH$ isoenzyme has had only $H$ polypeptide subunits, while the liver's $LDH$ isoenzyme comprises only $M$ polypeptide subunits.

Step 1: Introduction.

Isozymes are frequently observed using electrophoretic mobilities. All lifeforms necessitate several chemical copies of specific enzymes to achieve their full biological potential.

Step 2: Given Information.

 Lactic acid dehydrogenase, or $LDH$, is an oxidase protein source.

$574-16-46$

In $LDH$ isoenzyme, $M and N$ amino subunits have already been recognized.

Step 3: Explanation.

The heart's $LDH$ isoenzyme has just $H$ polypeptide subunits, whilst the liver's $LDH$ isoenzyme has only $M$ polypeptide subunits.