4QKL

Influenza A M2 wild type TM domain at high pH in the lipidic cubic phase under room temperature diffraction conditions

Functional Information from GO Data

Chain	GOid	namespace	contents
A	0015078	molecular_function	proton transmembrane transporter activity
A	0033644	cellular_component	host cell membrane
A	0055036	cellular_component	virion membrane
A	1902600	biological_process	proton transmembrane transport

Functional Information from PDB Data

site_id	AC1
Number of Residues	3
Details	BINDING SITE FOR RESIDUE CL A 101

Chain	Residue
A	SER23
A	SER23
A	SER23

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site_id	AC2
Number of Residues	6
Details	BINDING SITE FOR RESIDUE CA A 102

Chain	Residue
A	SER22
A	SER22
A	SER22
A	HOH201
A	HOH201
A	HOH201

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site_id	AC3
Number of Residues	7
Details	BINDING SITE FOR RESIDUE CA A 103

Chain	Residue
A	ASP24
A	HOH204
A	HOH205
A	HOH207
A	HOH208
A	HOH210
A	HOH215

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site_id	AC4
Number of Residues	2
Details	BINDING SITE FOR RESIDUE EDO A 104

Chain	Residue
A	HIS37
A	TRP41

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Functional Information from SwissProt/UniProt

site_id	SWS_FT_FI1
Number of Residues	20
Details	TRANSMEM: Helical; Signal-anchor for type III membrane protein => ECO:0000255|HAMAP-Rule:MF_04069

Chain	Residue	Details
A	SER23-LEU43

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site_id	SWS_FT_FI2
Number of Residues	1
Details	SITE: Essential for channel activity, possibly by being protonated during channel activation, and by forming the channel gate and the selective filter => ECO:0000255|HAMAP-Rule:MF_04069

Chain	Residue	Details
A	HIS37

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site_id	SWS_FT_FI3
Number of Residues	1
Details	SITE: Seems to be involved in pH gating => ECO:0000255|HAMAP-Rule:MF_04069

Chain	Residue	Details
A	TRP41

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