>3fn2_A mol:protein length:106 Putative sensor histidine kinase domainSNANGYTMQRDNQKTLAVYMFEEINRDVEYLSGRLSEKELKDKYRYYGRGYVRITDKDGQVITYEDGSVQDKTVFLTNEGANKLGWKLEFLIDEKMFEEEILEKQN