5L3R

Structure of the GTPase heterodimer of chloroplast SRP54 and FtsY from Arabidopsis thaliana

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, C	Signal recognition particle 54 kDa protein, chloroplastic	polymer	301	32424.8	2	UniProt (P37107) Pfam (PF02881) Pfam (PF00448) In PDB	Arabidopsis thaliana (Mouse-ear cress)	cpSRP54,FFC
2	B, D	Cell division protein FtsY homolog, chloroplastic	polymer	293	31733.6	2	UniProt (O80842) Pfam (PF02881) Pfam (PF00448) In PDB	Arabidopsis thaliana (Mouse-ear cress)	Chloroplast SRP receptor homolog,alpha subunit CpFtsY,Fused signal recognition particle receptor
3	A, B, C, D	PHOSPHOMETHYLPHOSPHONIC ACID GUANYLATE ESTER	non-polymer		521.2	4	Chemie (GCP)
4	A, B, C, D	MAGNESIUM ION	non-polymer		24.3	4	Chemie (MG)
5	B, D	GLYCEROL	non-polymer		92.1	2	Chemie (GOL)
6		water	water		18.0	140	Chemie (HOH)

Sequence modifications

A, C: 77 - 371 (UniProt: P37107)

PDB	External Database	Details
His 71	-	expression tag
His 72	-	expression tag
His 73	-	expression tag
His 74	-	expression tag
His 75	-	expression tag
His 76	-	expression tag

B, D: 80 - 366 (UniProt: O80842)

PDB	External Database	Details
His 74	-	expression tag
His 75	-	expression tag
His 76	-	expression tag
His 77	-	expression tag
His 78	-	expression tag
His 79	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	128316.8
Non-Polymers*	Number of molecules	10
	Total formula weight	2366.2
All*	Total formula weight	130683.1

*Water molecules are not included.