3TFA

Crystal structure of an H-NOX protein from Nostoc sp. PCC 7120 under 6 atm of xenon

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	Alr2278 protein	polymer	189	21213.6	2	UniProt (Q8YUQ7) Pfam (PF07700)	Nostoc sp.
2	C, G (A, B)	PROTOPORPHYRIN IX CONTAINING FE	non-polymer		616.5	2	Chemie (HEM)
3	D, E, F, H, I... (A, B)	XENON	non-polymer		131.3	6	Chemie (XE)
4	K, L (A, B)	water	water		18.0	107	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	42427.3
Non-Polymers*	Number of molecules	8
	Total formula weight	2020.7
All*	Total formula weight	44448.0

*Water molecules are not included.