Mutations of Rad6 E2 ubiquitin-conjugating enzymes at alanine-126 in helix-3 affect ubiquitination activity and decrease enzyme stability. - Shukla PK; Sinha D; Leng AM; Bissell JE; Thatipamula S; Ganguly R; Radmall KS; Skalicky JJ; Shrieve DC; Chandrasekharan MB (The Journal of biological chemistry, 2022)