Regulation of plant plasma membrane H+‐ATPase activity
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Regulation of plant plasma membrane H+‐ATPase activity. / Palmgren, Michael Gjedde.
In: Physiologia Plantarum, Vol. 83, No. 2, 10.1991, p. 314-323.Research output: Contribution to journal › Review › Research › peer-review
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TY - JOUR
T1 - Regulation of plant plasma membrane H+‐ATPase activity
AU - Palmgren, Michael Gjedde
PY - 1991/10
Y1 - 1991/10
N2 - The plant plasma membrane H+‐ATPase plays a central role in plant physiology. This enzyme belongs to the P type family of cation‐translocating pumps and generates the proton‐motive force that drives nutrient uptake across the plasma membrane. It also determines the extracellular acidification associated with elongation growth. The activity of the plasma membrane H+‐ATPase is rapidly altered after exposure of plant tissues to plant growth factors such as plant hormones, light and pathogens. However, very little is known about the mechanisms that regulate plasma membrane H+‐ATPase activity in the intact cell. The recent identification of an auto‐inhibitory domain in the C‐terminus of the plant plasma membrane H+‐ATPase implies that there are several possible means by which the enzyme could be regulated. The inhibitory interaction between the inhibitory domain and the catalytic site and/or a proton binding site may thus be regulated by a variety of means, such as the binding of effector molecules, phosphorylation, partial proteolysis, or removal of the inhibitory domain at the gene level. In addition, proton pumping across the plasma membrane could be regulated by changes in the transcriptional activity of H+‐ATPase genes or by differential expression of pump isoforms varying in their C‐terminal domain.
AB - The plant plasma membrane H+‐ATPase plays a central role in plant physiology. This enzyme belongs to the P type family of cation‐translocating pumps and generates the proton‐motive force that drives nutrient uptake across the plasma membrane. It also determines the extracellular acidification associated with elongation growth. The activity of the plasma membrane H+‐ATPase is rapidly altered after exposure of plant tissues to plant growth factors such as plant hormones, light and pathogens. However, very little is known about the mechanisms that regulate plasma membrane H+‐ATPase activity in the intact cell. The recent identification of an auto‐inhibitory domain in the C‐terminus of the plant plasma membrane H+‐ATPase implies that there are several possible means by which the enzyme could be regulated. The inhibitory interaction between the inhibitory domain and the catalytic site and/or a proton binding site may thus be regulated by a variety of means, such as the binding of effector molecules, phosphorylation, partial proteolysis, or removal of the inhibitory domain at the gene level. In addition, proton pumping across the plasma membrane could be regulated by changes in the transcriptional activity of H+‐ATPase genes or by differential expression of pump isoforms varying in their C‐terminal domain.
KW - P type ATPase
KW - Plant plasma membrane H‐ATPase
KW - proton transport
KW - regulation
UR - http://www.scopus.com/inward/record.url?scp=84989741819&partnerID=8YFLogxK
U2 - 10.1111/j.1399-3054.1991.tb02159.x
DO - 10.1111/j.1399-3054.1991.tb02159.x
M3 - Review
AN - SCOPUS:84989741819
VL - 83
SP - 314
EP - 323
JO - Physiologia Plantarum
JF - Physiologia Plantarum
SN - 0031-9317
IS - 2
ER -
ID: 245003075