>6v4k_D mol:protein length:485 Trk system potassium uptake proteinMQFRSIIRIVGLLLALFSVTMLAPALVALLYRDGAGVPFVTTFFVLLFCGAMCWFPNRRHKHELKSRDGFLIVVLFWTVLGSAGSLPFLIADNPNISVTDAFFESFSALTTTGATVIVGLDELPKAILFYRQFLQWFGGMGIIVLAVAILPVLGIGGMQLYRAEIPGPVKDTKMTPRIAETAKALWYIYLSLTIACAVAFWLAGMTPFDAISHSFSTIAIGGFSTHDASMGYFDSYAINLITVVFLLISACNFTLHFAAFASGGVHPKYYWKDPEFRAFIFIQVLLFLVCFLLLLKHHSYTSPYDAFDQALFQTVSISTTAGFTTTGFADWPLFLPVLLLFSSFIGGCAGSTGGGMKVIRILLLTLQGARELKRLVHPRAVYTIKVGGSALPQRVVDAVWGFFSAYALVFVVCMLGLIATGMDELSAFSAVAATLNNLGPGLGEVALHFGDVNDKAKWVLIVSMLFGRLEIFTLLILLTPTFWRS