>8pbb_D mol:protein length:460 Nitrogenase iron-iron protein, beta subunitMTCQVTQKAREGTINPIFTCQPAGAQFASIGIKDCIGIVHGGQGCVMFVRLLISQHMKESFEIASSSVHEDGAVFGALDRVETAVEVLLTRYPDVKVVPIITTCSTEIIGDDVDGLLSKLEDELLPTKFPGREVHLLTVHCPSFVGSMITGYDKAVHDFVKKFATKDEPSDKINLITGWVNPGDVKELKHLLEVMEVKANVLFEVESFDSPLMPDLEHHSHGSTTIEDLRDTANAKGTIALNRYEGMKAADYLKKKFKVPAVIGPTPVGIRNTDAFLKAVSEMTGQPIPAQLVKERGLALDAIADIGHMFLADKRVAIYANPDLAIGLTEFCLDLEMKPKLLLLGDDNSGYVKDPRVLALQENAPDLEIVTNADFWDLESRIQQGLELDLILGHSKGRFISIDYKVPMVRVGFPTYDRAGMYRHPVLGYGGAMFLAETMANTLFADMEAKKNKEWILNVW