2IH3 - JenaLib

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Title :   ION SELECTIVITY IN A SEMI-SYNTHETIC K+ CHANNEL LOCKED IN THE CONDUCTIVE CONFORMATION

Authors :   F. I. Valiyaveetil, M. Leonetti, T. W. Muir, R. Mackinnon

Date :   25 Sep 06 (Deposition) - 21 Nov 06 (Release) - 16 Nov 11 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   1.72

Chains :   Asym. Unit : A,B,C
Biol. Unit 1: A,B,C  (4x)

Keywords :   Ion Channel D-Amino Acid Semi-Synthetic, Membrane Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   F. I. Valiyaveetil, M. Leonetti, T. W. Muir, R. Mackinnon
Ion Selectivity In A Semisynthetic K+ Channel Locked In The Conductive Conformation.
Science V. 314 1004 2006
PubMed-ID: 17095703 | Reference-DOI: 10.1126/SCIENCE.1133415

Molecule 1 - FAB HEAVY CHAIN
	Cell Line	:	HYBRIDOMA
	Chains	:	A
	Organism Common	:	HOUSE MOUSE
	Organism Scientific	:	MUS MUSCULUS
	Organism Taxid	:	10090

Molecule 2 - FAB LIGHT CHAIN
	Cell Line	:	HYBRIDOMA
	Chains	:	B
	Organism Common	:	HOUSE MOUSE
	Organism Scientific	:	MUS MUSCULUS
	Organism Taxid	:	10090

Molecule 3 - VOLTAGE-GATED POTASSIUM CHANNEL
	Chains	:	C
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Taxid	:	562
	Gene	:	KCSA, SKC1
	Mutation	:	YES
	Organism Scientific	:	STREPTOMYCES LIVIDANS
	Organism Taxid	:	1916

		1	2	3
Asymmetric Unit	:	A	B	C
Biological Unit 1 (4x)	:	A	B	C

Summary Information (see also Sequences/Alignments below)

Asymmetric Unit (3, 9)

No.	Name	Count	Type	Full Name
1	1EM	1	Ligand/Ion	(1S)-2-HYDROXY-1-[(NONANOYLOXY)METHYL]ETHYL MYRISTATE
2	DAL	1	Mod. Amino Acid	D-ALANINE
3	K	7	Ligand/Ion	POTASSIUM ION

Biological Unit 1 (2, 8)

No.	Name	Count	Type	Full Name
1	1EM	4	Ligand/Ion	(1S)-2-HYDROXY-1-[(NONANOYLOXY)METHYL]ETHYL MYRISTATE
2	DAL	4	Mod. Amino Acid	D-ALANINE
3	K	-1	Ligand/Ion	POTASSIUM ION

Asymmetric Unit (7, 7)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	THR C:75 , VAL C:76 , K C:202 , K C:204	BINDING SITE FOR RESIDUE K C 201
2	AC2	SOFTWARE	VAL C:76 , DAL C:77 , K C:201 , K C:203	BINDING SITE FOR RESIDUE K C 202
3	AC3	SOFTWARE	DAL C:77 , TYR C:78 , K C:202	BINDING SITE FOR RESIDUE K C 203
4	AC4	SOFTWARE	THR C:75 , K C:201	BINDING SITE FOR RESIDUE K C 204
5	AC5	SOFTWARE	K C:207	BINDING SITE FOR RESIDUE K C 206
6	AC6	SOFTWARE	K C:206	BINDING SITE FOR RESIDUE K C 207
7	AC7	SOFTWARE	THR A:30 , SER A:31 , PRO C:63 , CYS C:70 , VAL C:84 , LEU C:86 , ARG C:89 , LEU C:90	BINDING SITE FOR RESIDUE 1EM C 301

Asymmetric Unit

No.	Residues
1	A:22	-	A:96
2	A:145	-	A:200
3	B:23	-	B:88
4	B:134	-	B:194

Asymmetric Unit

No.	Residues
1	Phe A:151	-	Pro A:152
2	Glu A:153	-	Pro A:154
3	Trp A:193	-	Pro A:194
4	Ser B:7	-	Pro B:8
5	Trp B:94	-	Pro B:95
6	Tyr B:140	-	Pro B:141

(no "SAP(SNP)/Variant" information available for 2IH3)

(no "PROSITE Motif" information available for 2IH3)

(no "Exon" information available for 2IH3)

Asymmetric Unit

Reformat:	Number of residues per line = ('0' or empty: single-line sequence representation)
	Number of residues per labelling interval =
	UniProt sequence: complete aligned part

Show mapping:	SCOP domains	CATH domains	Pfam domains	Secondary structure (by author)
	SAPs(SNPs)	PROSITE motifs	Exons
	(details for a mapped element are shown in a popup box when the mouse pointer rests over it)

Chain A from PDB  Type:PROTEIN  Length:219
                                                                                                                                                                                                                                                           
               SCOP domains d2ih3a1 A:1-118 Immunoglobulin heavy chain variable domain, VH                                                        d2ih3a2 A:119-219 Immunoglobulin heavy chain gamma constant domain 1, CH1-gamma                       SCOP domains
               CATH domains 2ih3A01 A:1-118 Immunoglobulins                                                                                       2ih3A02 A:119-217 Immunoglobulins                                                                  -- CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...ee...eeee.....eeeeeee........eeeeeee......eeeeee......eee.......eeeeee....eeeeee...hhhhheeeeeeee.......ee...eeeee........eeeee..........eeeeeeeeeee.....eeee.hhh....eee...ee....eeeeeeeeee.hhh.....eeeeeehhhheeeeee..... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2ih3 A   1 QVQLQQPGAELVKPGASVKLSCKASGYTFTSDWIHWVKQRPGHGLEWIGEIIPSYGRANYNEKIQKKATLTADKSSSTAFMQLSSLTSEDSAVYYCARERGDGYFAVWGAGTTVTVSSAKTTPPSVYPLAPGSAAQTNSMVTLGCLVKGYFPEPVTVTWNSGSLSSGVHTFPAVLQSDLYTLSSSVTVPSSSWPSETVTCNVAHPASSTKVDKKIVPRD 219
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210

Chain B from PDB  Type:PROTEIN  Length:212
                                                                                                                                                                                                                                                    
               SCOP domains d2ih3b1 B:1-107 Immunoglobulin light chain kappa variable domain, VL-kappa                                 d2ih3b2 B:108-212 Immunoglobulin light chain kappa constant domain, CL-kappa                              SCOP domains
               CATH domains 2ih3B01 B:1-108 Immunoglobulins                                                                             2ih3B02 B:109-211 Immunoglobulins                                                                      - CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...ee....eeee.....eeeeeee.......eeeeee......eeeee...ee.......eeeeee..eeeeee...hhhhh.eeeeee......ee...eeeee.......eeeee..hhhhhh..eeeeeeeeeee.....eeeeee..eee...eeeee.........eeeeeeeeeehhhhhh..eeeeeee.......eeeeee.. Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2ih3 B   1 DILLTQSPAILSVSPGERVSFSCRASQSIGTDIHWYQQRTNGSPRLLIKYASESISGIPSRFSGSGSGTDFTLSINSVESEDIANYYCQQSNRWPFTFGSGTKLEIKRADAAPTVSIFPPSSEQLTSGGASVVCFLNNFYPKDINVKWKIDGSERQNGVLNSWTDQDSKDSTYSMSSTLTLTKDEYERHNSYTCEATHKTSTSPIVKSFNRN 212
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210

Chain C from PDB  Type:PROTEIN  Length:98
 aligned with KCSA_STRLI | P0A334 from UniProtKB/Swiss-Prot  Length:160

    Alignment length:98
                                    33        43        53        63        73        83        93       103       113        
           KCSA_STRLI    24 LHWRAAGAATVLLVIVLLAGSYLAVLAERGAPGAQLITYPRALWWSVETATTVGYGDLYPVTLWGRLVAVVVMVAGITSFGLVTAALATWFVGREQER 121
               SCOP domains d2ih3c_ C: Potassium channel protein                                                               SCOP domains
               CATH domains 2ih3C00 C:24-121  [code=1.10.287.70, no name defined]                                              CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author hhhhhhhhhhhhhhhhhhhhhhhhhhhhh........hhhhhhhhhhhhhh..........hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------- Transcript
                 2ih3 C  24 LHWRAAGAATVLLVIVLLAGSYLAVLAERGAPGAQLITYPRALWWACETATTVxYGDLYPVTLWGRLVAVVVMVAGITSFGLVTAALATWFVGREQER 121
                                    33        43        53        63        73   |    83        93       103       113        
                                                                                77-DAL

Legend:		→ Mismatch	(orange background)
	-	→ Gap	(green background, '-', border residues have a numbering label)
		→ Modified Residue	(blue background, lower-case, 'x' indicates undefined single-letter code, labelled with number + name)
	x	→ Chemical Group	(purple background, 'x', labelled with number + name, e.g. ACE or NH2)
	extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '\|'

Asymmetric Unit

Classes(

)

Architectures( (-)

)

Topologies( (-)

)

Homologous Superfamilies( (-)

)

Organisms( (-)

)

Class: Mainly Alpha (13335)

Architecture: Orthogonal Bundle (10391)

Topology: Helix Hairpins (718)

Homologous Superfamily: [code=1.10.287.70, no name defined] (106)

House mouse (Mus musculus) (24)

2ih3C00

C:24-121

Class: Mainly Beta (13760)

Architecture: Sandwich (5577)

Topology: Immunoglobulin-like (3897)

Homologous Superfamily: Immunoglobulins (2282)

House mouse (Mus musculus) (616)

2a	2ih3B02	B:109-211
2b	2ih3A02	A:119-217
2c	2ih3A01	A:1-118
2d	2ih3B01	B:1-108

(no "Pfam Domain" information available for 2IH3)

Asymmetric Unit(hide GO term definitions)

Chain C (KCSA_STRLI | P0A334)

molecular function
	GO:0042802	identical protein binding	Interacting selectively and non-covalently with an identical protein or proteins.
	GO:0005249	voltage-gated potassium channel activity	Enables the transmembrane transfer of a potassium ion by a voltage-gated channel. A voltage-gated channel is a channel whose open state is dependent on the voltage across the membrane in which it is embedded.
biological process
	GO:0006811	ion transport	The directed movement of charged atoms or small charged molecules into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
	GO:0071805	potassium ion transmembrane transport	A process in which a potassium ion is transported from one side of a membrane to the other.
	GO:0006813	potassium ion transport	The directed movement of potassium ions (K+) into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
	GO:0006810	transport	The directed movement of substances (such as macromolecules, small molecules, ions) or cellular components (such as complexes and organelles) into, out of or within a cell, or between cells, or within a multicellular organism by means of some agent such as a transporter, pore or motor protein.
cellular component
	GO:0016021	integral component of membrane	The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.
	GO:0016020	membrane	A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
	GO:0005886	plasma membrane	The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.
	GO:0008076	voltage-gated potassium channel complex	A protein complex that forms a transmembrane channel through which potassium ions may cross a cell membrane in response to changes in membrane potential.

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	Ligands, Modified Residues, Ions
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	Cis Peptide Bonds
		Glu A:153 - Pro A:154	[ RasMol ]
		Phe A:151 - Pro A:152	[ RasMol ]
		Ser B:7 - Pro B:8	[ RasMol ]
		Trp A:193 - Pro A:194	[ RasMol ]
		Trp B:94 - Pro B:95	[ RasMol ]
		Tyr B:140 - Pro B:141	[ RasMol ]

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	2ih3
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Description

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (3, 9)

Sites (7, 7)

SS Bonds (4, 4)

Cis Peptide Bonds (6, 6)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (0, 0)

PROSITE Motifs (0, 0)

Exons (0, 0)

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SCOP Domains (5, 5)

CATH Domains (2, 5)

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Gene Ontology (10, 10)

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