Ab. Tsiomenko et al., SECRETORY HEAT-SHOCK-PROTEIN OF THE THERMOTOLERANT YEAST HANSENULA-POLYMORPHA - IDENTIFICATION AND COMPARATIVE CHARACTERISTICS, Biochemistry, 62(2), 1997, pp. 123-128
Thirteen investigated strains of ascomycetous yeasts able to produce s
ecretory heat-shock proteins (sHSPs) do not response equally to a high
temperature by induction of the synthesis and secretion of these prot
eins. In this respect the above yeasts can be divided into three group
s having a positive (I), a negative (II), and an indefinite reaction (
III) to the heat shock. The thermotolerant yeast Hansenula polymorpha
belongs to the first group. In this yeast heat shock induces the synth
esis and secretion of sHSP gp280. This new representative differs from
known sHSPs in molecular mass and subunit composition. In other respe
cts (glycosylation, mainly extracellular localization, and the charact
er of export into the culture medium) it displays similar properties.