CheKine™ Micro Mitochondrial Complex II Assay Kit: Your Buyer's Guide for SDH Activity Quantification

The 30-Second Verdict

Mitochondrial complex II (succinate dehydrogenase, SDH) is a dual-component enzyme bridging the tricarboxylic acid (TCA) cycle and electron transport chain (ETC), playing a pivotal role in energy metabolism[reference:61]. Abbkine's CheKine™ Micro Mitochondrial complex II Activity Assay Kit (KTB1860) delivers exceptional value at $49 for 48 tests/24 standards[reference:62], making advanced mitochondrial analysis accessible to labs of every size.

Pros

✅ Gold-standard SDH detection — measures complex II activity via colorimetric readout

✅ Broad sample compatibility — plant tissues, animal tissues, and cells[reference:63]

✅ Microplate format — 48T/24S for streamlined high-throughput analysis[reference:64]

✅ Detailed practical guidance — comprehensive protocol covers mitochondrial enrichment, preprocessing, and result normalization[reference:65]

✅ Validated in high-impact research — cited in Cellular Physiology and Biochemistry (IF: 10.6) on mitochondrial ultrastructural pathology in diabetic cardiomyopathy[reference:66] and Nucleic Acids Research (IF: 17) on multifaceted roles of t6A biogenesis in mitochondrial gene expression[reference:67]

✅ Cost-effective — $49 for 48 tests

Cons

❌ Requires mitochondrial enrichment for optimal results—cytosolic contaminants and damaged mitochondria skew results[reference:68]

❌ Not for clinical diagnosis (research use only)

Who Should Buy This Kit?

Ideal for:

• Researchers studying mitochondrial function in metabolic disorders and diabetes[reference:69]
• Scientists investigating complex II dysfunction in neurodegenerative diseases
• Cardiomyopathy researchers[reference:70]
• Plant physiologists studying stress responses[reference:71]
• Drug discovery teams screening compounds for mitochondrial toxicity
• Labs conducting high-throughput mitochondrial functional analysis

Skip this if:

• You lack a microplate reader
• You're unable to perform mitochondrial enrichment

Practical Tips for Success

Mitochondrial enrichment is the foundational step to accurate complex II activity measurement. For adherent cells, seed to 90% confluency, wash with ice-cold PBS, and harvest via trypsinization. Resuspend 1×10⁷ cells in 1 mL of the kit's recommended mitochondrial isolation buffer (supplemented with 0.25 M sucrose to maintain osmolarity) and homogenize using a Dounce homogenizer (20–30 strokes on ice)—avoid excessive force[reference:72].

For tissue samples, mince 50 mg of fresh tissue in isolation buffer, homogenize with a glass-Teflon homogenizer (10 strokes at 1,500 rpm) on ice. Centrifuge at 800×g for 10 minutes at 4°C, then transfer supernatant and centrifuge at 10,000×g for 20 minutes at 4°C to pellet crude mitochondria[reference:73].

Critical optimization: Add 1 mM sodium malonate (a specific complex II inhibitor) to a parallel "inhibited control" well for each sample[reference:74].

Key Applications

The kit is suitable for evaluating mitochondrial respiratory chain complex II activity in:

• Cellular energy metabolism disorders[reference:75]
• Mitochondrial disease models[reference:76]
• Drug toxicity screening[reference:77]
• Plant stress physiology[reference:78]
• Animal disease mechanisms[reference:79]

The Bottom Line

For researchers investigating mitochondrial complex II activity in health and disease, KTB1860 delivers the sensitivity, affordability ($49/48T), and publication-ready performance that modern mitochondrial research demands—with validation in Cellular Physiology and Biochemistry (IF: 10.6) and Nucleic Acids Research (IF: 17).

👉 Quantify mitochondrial complex II activity with confidence. View Product