>6rqr_B mol:protein length:144 Na(+)/H(+) exchange regulatory cofactor NHE-RF1,Cystic fibrosis transmembrane conductance regulatorMAEEHHHHHHHHLEVLFQGPLRPRLCTMKKGPSGYGFNLHSDKSKPGQFIRSVDPDSPAEASGLRAQDRIVEVNGVCMEGKQHGDVVSAIRAGGDETKLLVVDRETDEFFKKCRVIPSQEHLNGPLPVPFTNGEIQKENSDTRL