1F23

CONTRIBUTION OF A BURIED HYDROGEN BOND TO HIV-1 ENVELOPE GLYCOPROTEIN STRUCTURE AND FUNCTION

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B, C, D, E... (A, B, C, D, E...)	TRANSMEMBRANE GLYCOPROTEIN	polymer	76	8820.8	6	UniProt (Q89797) Pfam (PF00517)	Human immunodeficiency virus 1	GP41
2	G, H, I, J, K... (A, B, C, D, E...)	water	water		18.0	271	Chemie (HOH)

Sequence modifications

A, B, C, D, E, F: 1 - 36 (UniProt: Q89797)

PDB	External Database	Details
Thr 28	Ile 573	engineered mutation

A, B, C, D, E, F: 43 - 76 (UniProt: Q89797)

PDB	External Database	Details
Ser 37	-	insertion
Gly 38	-	insertion
Gly 39	-	insertion
Arg 40	-	insertion
Gly 41	-	insertion
Gly 42	-	insertion

Contents of the asymmetric unit

Polymers	Number of chains	6
	Total formula weight	52924.7
All*	Total formula weight	52924.7

*Water molecules are not included.