>tr|D3S7K5|D3S7K5_METSF Putative nickel-responsive regulator OS=Methanocaldococcus sp. GN=MFS40622_0319 MTEMDRISISLPSKLLREFDEIIAERGYASRSEAIRDAIRDYIIKHKWIHSLEGERAGSI SVIYNHHASDVMEKITEIQHNYTDIIVATLHLHLDHDHCLETILVRGDAKRIRELTDRLT ALKGVKQVKLSVMVPGGQIPE