5GKK

Crystal structure of a homing endonuclease, I-TnaI

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	Putative homing endonuclease	polymer	170	20385.8	2	UniProt (Q70PR2)	Thermotoga neapolitana
2	C, D (A, B)	water	water		18.0	31	Chemie (HOH)

Sequence modifications

A, B: 1 - 162 (UniProt: Q70PR2)

PDB	External Database	Details
Leu 163	-	expression tag
Glu 164	-	expression tag
His 165	-	expression tag
His 166	-	expression tag
His 167	-	expression tag
His 168	-	expression tag
His 169	-	expression tag
His 170	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	40771.6
All*	Total formula weight	40771.6

*Water molecules are not included.