Crystal Structure of a Conserved Hypothetical Protein MJ0927 from Methanocaldococcus jannaschii Reveals a Novel Quaternary Assembly in the Nif3 Family

Table 3

Interacting surfaces in MJ0927 and interactions at the intratrimer interface.

Type of contacts	Monomer A	Monomer B	Monomer C
	Residue	Residue	Residue
Salt bridges	Asp22	His204
	Lys192	Glu191
	Lys127	Asp194
	Asp194		Lys127
	Glu191		Lys192
	His204		Asp22
Hydrogen bonds	Tyr188[OH]	Glu191[OE1]
	Lys127[NZ]	Ala193[O]
	Lys110[N]	Glu211[OE1]
	Glu211[OE1]		Lys110[N]
	Glu191[OE1]		Tyr188[OH]