>UniProt/Swiss-Prot|O68943|ANFG_AZOPA Nitrogenase iron-iron protein delta chain MSAASASAAVKQKVEAPVHPMDARIDELTDYIMKNCLWQFHSRSWDRERQNAEILKKTKE LLCGEPVDLSTSHDRCYWVDAVCLADDYREHYPWINSMSKEELASLMQGLKDRMDYLTIT GSLNEELSDKHY