Why my protein band in SDS-PAGE if heating the sample becomes much lighter compared to not heating the sample?

I ran a SDS-PAGE of my sample ovalbumin in histidine buffer in 2x Laemmli buffer without heating and it got nice visible bands. However, when I heat the sample at 77C in 2x laemmli buffer for 5...

16 February 2021 3,308 3 View