1CYQ

INTRON ENCODED HOMING ENDONUCLEASE I-PPOI (H98A)/DNA HOMING SITE COMPLEX

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (C, D)	5'-D(*TP*TP*GP*AP*CP*TP*CP*TP*CP*TP*TP*AP*AP*GP*AP*GP*AP*GP*TP*CP*A)-3'	polymer	21	6437.2	2
2	C, D (A, B)	INTRON-ENCODED HOMING ENDONUCLEASE I-PPOI	polymer	162	17613.0	2	UniProt (Q94702) Pfam (PF05551)	Physarum polycephalum	I-PPO
3	E, F (C, D)	MAGNESIUM ION	non-polymer		24.3	2	Chemie (MG)
4	G, H, I, J (A, B)	ZINC ION	non-polymer		65.4	4	Chemie (ZN)
5	K, L, M, N (C, D, A, B)	water	water		18.0	340	Chemie (HOH)

Sequence modifications

A, B: 2 - 163 (UniProt: Q94702)

PDB	External Database	Details
Ala 98	His 98	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	48100.3
Non-Polymers*	Number of molecules	6
	Total formula weight	310.2
All*	Total formula weight	48410.6

*Water molecules are not included.