Individual lanes show warped or distorted bands while adjacent lanes appear normal. Affected lanes may show smearing, broadening, or lateral spreading of protein bands.
Common Causes
1Excessive protein amount loaded exceeding well capacity
2Uneven protein loading across different wells
3Sample volume exceeding well volume capacity
4High protein concentration causing local gel matrix saturation
Solutions
1Do not exceed recommended well loading capacity (typically 20-30 µg total protein for mini-gels)
2Refer to gel manufacturer and comb size specifications for maximum sample volumes
3Perform protein quantification (BCA or Bradford assay) to ensure equal loading
4Dilute high-concentration samples to appropriate levels before loading