4S21

Crystal structure of the photosensory core module of bacteriophytochrome RPA3015 from R. palustris

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	Bacteriophytochrome (Light-regulated signal transduction histidine kinase), PhyB1	polymer	525	57358.1	2	UniProt (Q6N5G3) Pfam (PF08446) Pfam (PF01590) Pfam (PF00360) In PDB	Rhodopseudomonas palustris CGA009	Photosensory core module of bacteriophytochrome RPA3015 (RpBphP2)
2	A, B	BILIVERDINE IX ALPHA	non-polymer		582.6	2	Chemie (BLA)
3		water	water		18.0	1	Chemie (HOH)

Sequence modifications

A, B: 1 - 505 (UniProt: Q6N5G3)

PDB	External Database	Details
Met -19	-	expression tag
Gly -18	-	expression tag
Ser -17	-	expression tag
Ser -16	-	expression tag
His -15	-	expression tag
His -14	-	expression tag
His -13	-	expression tag
His -12	-	expression tag
His -11	-	expression tag
His -10	-	expression tag
Ser -9	-	expression tag
Ser -8	-	expression tag
Gly -7	-	expression tag
Leu -6	-	expression tag
Val -5	-	expression tag
Pro -4	-	expression tag
Arg -3	-	expression tag
Gly -2	-	expression tag
Ser -1	-	expression tag
His 0	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	114716.2
Non-Polymers*	Number of molecules	2
	Total formula weight	1165.3
All*	Total formula weight	115881.5

*Water molecules are not included.