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1.A.98.1.1
HTLV-1 P13 viroporin of 87 aas.  Transports K+ (Hyser and Estes 2015). Large protein conformation changes occur upon transitioning from the soluble to the membrane-bound state. p13(II)-assisted transport of K+ suggests an involvement in the control of the transmembrane potential (Georgieva et al. 2020).

Accession Number:C6L855
Protein Name:P13 protein
Length:87
Molecular Weight:10063.00
Species:Human T-lymphotropic virus 1 [11908]
Location1 / Topology2 / Orientation3: Membrane1 / Multi-pass membrane protein2
Substrate potassium(1+)

Cross database links:

Pfam: PF05599   

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FASTA formatted sequence
1:	MLIISPLPRV WTESSFRIPS LRVWRLCTRR LVPHLWGTMF GPPTSSRPTG HLSRASDHLG 
61:	PHRWTRYRLS STVPYPSTPL LPHPENL