4IT0

Structure of the RNA ligase RtcB-GMP/Mn(II) 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	tRNA-splicing ligase RtcB	polymer	481	53582.4	2	UniProt (O59245) Pfam (PF01139) In PDB	Pyrococcus horikoshii	Pho hyp2 intein
2	C, D	beta-D-fructofuranose-(2-1)-alpha-D-glucopyranose	branched		342.3	2	In PDB BIRD (PRD_900003)		sucrose
3	A, B	MANGANESE (II) ION	non-polymer		54.9	4	Chemie (MN)
4	A	GUANOSINE-5'-MONOPHOSPHATE	non-polymer		363.2	1	Chemie (5GP)
5	B, A	SULFATE ION	non-polymer		96.1	19	Chemie (SO4)
6		water	water		18.0	551	Chemie (HOH)

Sequence modifications

A, B: 1 - 97 (UniProt: O59245)
A, B: 98 - 481 (UniProt: O59245)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	107164.8
Branched	Number of molecules	2
	Total formula weight	684.6
Non-Polymers*	Number of molecules	24
	Total formula weight	2408.2
All*	Total formula weight	110257.6

*Water molecules are not included.