A potassium channel protein encoded by chlorella virus PBCV-1
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In: Science, Vol. 287, No. 5458, 03.03.2000, p. 1641-1644.
Research output: Journal contributions › Journal articles › Research › peer-review
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TY - JOUR
T1 - A potassium channel protein encoded by chlorella virus PBCV-1
AU - Plugge, Barbara
AU - Gazzarrini, Sabrina
AU - Nelson, Michael C.
AU - Cerana, Raffaella
AU - Van Etten, James L.
AU - Derst, Christian
AU - DiFrancesco, Dario
AU - Moroni, A
AU - Thiel, Gerhard
PY - 2000/3/3
Y1 - 2000/3/3
N2 - The large chlorella virus PBCV-1, which contains double-stranded DNA (dsDNA), encodes a 94-codon open reading frame (ORF) that contains a motif resembling the signature sequence of the pore domain of potassium channel proteins. Phylogenetic analyses of the encoded protein, Kcv, indicate a previously unidentified type of potassium channel. The messenger RNA encoded by the ORF leads to functional expression of a potassium-selective conductance in Xenopus laevis oocytes. The channel blockers amantadine and barium, but not cesium, inhibit this conductance, in addition to virus plaque formation. Thus, PBCV-1 encodes the first known viral protein that functions as a potassium-selective channel and is essential in the virus life cycle.
AB - The large chlorella virus PBCV-1, which contains double-stranded DNA (dsDNA), encodes a 94-codon open reading frame (ORF) that contains a motif resembling the signature sequence of the pore domain of potassium channel proteins. Phylogenetic analyses of the encoded protein, Kcv, indicate a previously unidentified type of potassium channel. The messenger RNA encoded by the ORF leads to functional expression of a potassium-selective conductance in Xenopus laevis oocytes. The channel blockers amantadine and barium, but not cesium, inhibit this conductance, in addition to virus plaque formation. Thus, PBCV-1 encodes the first known viral protein that functions as a potassium-selective channel and is essential in the virus life cycle.
KW - Biology
UR - http://www.scopus.com/inward/record.url?scp=0034008733&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/1d5e3004-efbf-328f-bd16-ee969147261e/
U2 - 10.1126/science.287.5458.1641
DO - 10.1126/science.287.5458.1641
M3 - Journal articles
C2 - 10698737
VL - 287
SP - 1641
EP - 1644
JO - Science
JF - Science
SN - 0036-8075
IS - 5458
ER -