1YTU

Structural basis for 5'-end-specific recognition of the guide RNA strand by the A. fulgidus PIWI protein

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, C (C, E)	5'-R(P*AP*GP*AP*CP*AP*G)-3'	polymer	6	1938.3	2
2	B, D (D, F)	5'-R(P*UP*GP*UP*C)-3'	polymer	4	1217.8	2
3	E, F (A, B)	hypothetical protein AF1318	polymer	427	49818.3	2	UniProt (O28951) Pfam (PF02171)	Archaeoglobus fulgidus	PIWI
4	G, H (A, B)	MAGNESIUM ION	non-polymer		24.3	2	Chemie (MG)
5	I, J, K, L, M... (C, D, E, F, A...)	water	water		18.0	57	Chemie (HOH)

Sequence modifications

A, B: 1 - 427 (UniProt: O28951)

PDB	External Database	Details
Mse 1	Met 1	modified residue
Mse 2	Met 2	modified residue
Mse 112	Met 112	modified residue
Mse 139	Met 139	modified residue
Mse 200	Met 200	modified residue
Mse 208	Met 208	modified residue
Mse 260	Met 260	modified residue
Mse 280	Met 280	modified residue
Mse 301	Met 301	modified residue
Mse 339	Met 339	modified residue
Mse 377	Met 377	modified residue

Contents of the asymmetric unit

Polymers	Number of chains	6
	Total formula weight	105948.6
Non-Polymers*	Number of molecules	2
	Total formula weight	48.6
All*	Total formula weight	105997.2

*Water molecules are not included.