1UN6

THE CRYSTAL STRUCTURE OF A ZINC FINGER - RNA COMPLEX REVEALS TWO MODES OF MOLECULAR RECOGNITION

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	B, C, D	TRANSCRIPTION FACTOR IIIA	polymer	87	10299.8	3	UniProt (P03001) Pfam (PF00096) In PDB	XENOPUS LAEVIS (AFRICAN CLAWED FROG)	TFIIIA, FACTOR A, S-TFIIIA/O-TFIIIA
2	E, F	5S RIBOSOMAL RNA	polymer	61	19708.8	2		XENOPUS LAEVIS (AFRICAN CLAWED FROG)
3	B, C, D	ZINC ION	non-polymer		65.4	8	Chemie (ZN)
4	B, C, E, F	MAGNESIUM ION	non-polymer		24.3	13	Chemie (MG)
5		water	water		18.0	16	Chemie (HOH)

Sequence modifications

B, C, D: 104 - 104 (PDB: 1UN6)
B, C, D: 105 - 190 (UniProt: P03001)

Contents of the asymmetric unit

Polymers	Number of chains	5
	Total formula weight	70317.1
Non-Polymers*	Number of molecules	21
	Total formula weight	839.2
All*	Total formula weight	71156.3

*Water molecules are not included.