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(-) Description

Title :  CRYSTAL STRUCTURE OF A CHIMERIC KV7.2 - KV7.3 PROXIMAL C-TERMINAL DOMAIN IN COMPLEX WITH CALMODULIN
 
Authors :  R. Strulovich, J. A. Hirsch
Date :  26 Mar 16  (Deposition) - 07 Sep 16  (Release) - 05 Oct 16  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.00
Chains :  Asym./Biol. Unit :  A,B
Keywords :  Voltage-Gated Potassium Channel, Complex, Calmodulin, Transport Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  R. Strulovich, W. S. Tobelaim, B. Attali, J. A. Hirsch
Structural Insights Into The M-Channel Proximal C-Terminus/Calmodulin Complex.
Biochemistry V. 55 5353 2016
PubMed-ID: 27564677  |  Reference-DOI: 10.1021/ACS.BIOCHEM.6B00477

(-) Compounds

Molecule 1 - POTASSIUM VOLTAGE-GATED CHANNEL SUBFAMILY KQT MEMBER 3, POTASSIUM VOLTAGE-GATED CHANNEL SUBFAMILY KQT MEMBER 2
    Chains: A
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Taxid: 562
    Gene: KCNQ3, KCNQ2
    Organism Common: HUMAN
    Organism Scientific: HOMO SAPIENS
    Organism Taxid: 9606
    Other Details: THE SEQUENCE IS CHIMERIC. RESIDUES 29-82 CORRESPOND TO HUMAN KV7.3 (KCNQ3), RESIDUES 356-409 (UNIPROT O43525-1). RESIDUES 83-110 CORRESPOND TO HUMAN KV7.2 (KCNQ2), RESIDUES 530-557 (UNIPROT O43526-1).
    Synonym: KQT-LIKE 3,POTASSIUM CHANNEL SUBUNIT ALPHA KVLQT3,VOLTAGE- GATED POTASSIUM CHANNEL SUBUNIT KV7.3,KQT-LIKE 2,NEUROBLASTOMA- SPECIFIC POTASSIUM CHANNEL SUBUNIT ALPHA KVLQT2,VOLTAGE-GATED POTASSIUM CHANNEL SUBUNIT KV7.2
 
Molecule 2 - CALMODULIN
    Chains: B
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Taxid: 562
    Gene: CALM1, CALM, CAM, CAM1, CALM2, CAM2, CAMB, CALM3, CALML2, CAM3, CAMC, CAMIII
    Organism Common: HUMAN
    Organism Scientific: HOMO SAPIENS
    Organism Taxid: 9606
    Other Details: THIS IS MAMMALIAN CALMODULIN WITH FOUR BOUND CA2+ IONS. THE INITIATING METHIONINE RESIDUE IS CLEAVED IN VIVO.
    Synonym: CAM

 Structural Features

(-) Chains, Units

  12
Asymmetric/Biological Unit : AB

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (2, 6)

Asymmetric/Biological Unit (2, 6)
No.NameCountTypeFull Name
1ACT1Ligand/IonACETATE ION
2CA5Ligand/IonCALCIUM ION

(-) Sites  (6, 6)

Asymmetric Unit (6, 6)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREASP B:21 , ASP B:23 , ASP B:25 , THR B:27 , GLU B:32 , HOH B:315binding site for residue CA B 201
2AC2SOFTWAREASP B:57 , ASP B:59 , ASN B:61 , THR B:63 , GLU B:68 , HOH B:302 , HOH B:324binding site for residue CA B 202
3AC3SOFTWAREASP B:94 , ASP B:96 , ASN B:98 , TYR B:100 , HOH B:348 , HOH B:352binding site for residue CA B 203
4AC4SOFTWAREASP B:130 , ASP B:132 , ASP B:134 , GLN B:136 , ACT B:206 , HOH B:365binding site for residue CA B 204
5AC5SOFTWAREGLU B:141 , GLN B:144 , HOH B:333 , HOH B:359 , HOH B:369 , HOH B:380binding site for residue CA B 205
6AC6SOFTWAREALA B:129 , ASP B:130 , ILE B:131 , ASP B:132 , GLN B:136 , ASN B:138 , CA B:204binding site for residue ACT B 206

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 5J03)

(-) Cis Peptide Bonds  (1, 1)

Asymmetric/Biological Unit
No.Residues
1Thr A:533 -Pro A:534

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 5J03)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 5J03)

(-) Exons   (0, 0)

(no "Exon" information available for 5J03)

(-) Sequences/Alignments

Asymmetric/Biological 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:73
                                                                                                         
               SCOP domains ------------------------------------------------------------------------- SCOP domains
               CATH domains ------------------------------------------------------------------------- CATH domains
               Pfam domains ------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .hhhhhhhhhhhhhhhhhhhhhhhhhh........hhhhhhhhh.....hhhhhhhhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------- Transcript
                 5j03 A 350 EQHRQKHFEKRRKPAAELIQAAWRYYATNPNRIDLVATWRFYESVVDLTPGLKVSIRAVCVMRFLVSKRKFKE 557
                                   359       369       379       389     ||534       544       554   
                                                                       395|                          
                                                                        531                          


Chain B from PDB  Type:PROTEIN  Length:146
                                                                                                                                                                                  
               SCOP domains -------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains -------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...hhhhhhhhhhhhhhhh.....eehhhhhhhhhhhh....hhhhhhhhhhhhh......eehhhhhhhhh.hhhhhhhhhhhhhhhhhhh.....eeehhhhhhhhhhh....hhhhhhhhhhhhh.....eeehhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 5j03 B   3 DQLTEEQIAEFKEAFSLFDKDGDGTITTKELGTVMRSLGQNPTEAELQDMINEVDADGNGTIDFPEFLTMMARKMKDTDSEEEIREAFRVFDKDGNGYISAAELRHVMTNLGEKLTDEEVDEMIREADIDGDGQVNYEEFVQMMTA 148
                                    12        22        32        42        52        62        72        82        92       102       112       122       132       142
   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 '|'

 Classification and Annotation

(-) SCOP Domains  (0, 0)

(no "SCOP Domain" information available for 5J03)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 5J03)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 5J03)

(-) Gene Ontology  (102, 122)

Asymmetric/Biological Unit(hide GO term definitions)

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  Cis Peptide Bonds
    Thr A:533 - Pro A:534   [ RasMol ]  
 

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  5j03
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 Related Entries

(-) Entries Sharing at Least One Protein Chain (UniProt ID)

UniProtKB/Swiss-Prot
        CALM1_HUMAN | P0DP23: 1aji 1cdl 1cll 1cm1 1cm4 1ctr 1deg 1iwq 1j7o 1j7p 1k90 1k93 1l7z 1lvc 1nkf 1pk0 1qiv 1qiw 1s26 1sk6 1sw8 1up5 1wrz 1xfu 1xfv 1xfw 1xfx 1xfy 1xfz 1y6w 1yr5 1yrt 1yru 1zot 1zuz 2be6 2f3y 2f3z 2hf5 2i08 2jzi 2k0e 2k0f 2k0j 2k61 2kne 2kug 2kuh 2l53 2l7l 2lgf 2ll6 2ll7 2lqc 2lqp 2lv6 2m0j 2m0k 2m55 2mg5 2n27 2n6a 2n77 2n8j 2r28 2v01 2v02 2vay 2w73 2wel 2x0g 2y4v 3bya 3cln 3dve 3dvj 3dvk 3dvm 3evv 3ewt 3ewv 3g43 3hr4 3j41 3o77 3o78 3oxq 3sui 3uct 3ucw 3ucy 4bw7 4bw8 4byf 4dck 4djc 4gow 4jpz 4jq0 4l79 4lzx 4m1l 4ovn 4q57 4q5u 4umo 4upu 4v0c 5coc 5dbr 5dow 5dsu 5ggm 5i0i 5j8h 5k7l 5k8q 5vms 5wsu 5wsv
        CALM2_HUMAN | P0DP24: 1aji 1cdl 1cll 1cm1 1cm4 1ctr 1deg 1iwq 1j7o 1j7p 1k90 1k93 1l7z 1lvc 1nkf 1pk0 1qiv 1qiw 1s26 1sk6 1sw8 1up5 1xfu 1xfv 1xfw 1xfx 1xfy 1xfz 1y6w 1yr5 1yrt 1yru 1zot 1zuz 2be6 2f3y 2f3z 2hf5 2jzi 2k0e 2k0f 2k0j 2k61 2kne 2kug 2kuh 2l53 2lgf 2ll6 2ll7 2lqc 2lqp 2lv6 2m0j 2m0k 2m55 2mg5 2n27 2n6a 2n77 2n8j 2r28 2v01 2v02 2vay 2w73 2wel 2x0g 2y4v 3bya 3cln 3dve 3dvj 3dvk 3dvm 3ewt 3ewv 3g43 3hr4 3j41 3oxq 3sui 3uct 3ucw 3ucy 4bw7 4bw8 4byf 4dck 4djc 4gow 4jpz 4jq0 4l79 4lzx 4m1l 4ovn 4q57 4q5u 4umo 4upu 4v0c 5coc 5dbr 5dow 5dsu 5ggm 5i0i 5j8h 5k7l 5k8q 5vms 5wsu 5wsv
        CALM3_HUMAN | P0DP25: 1aji 1cdl 1cll 1cm1 1cm4 1ctr 1deg 1iwq 1j7o 1j7p 1k90 1k93 1l7z 1lvc 1nkf 1pk0 1qiv 1qiw 1s26 1sk6 1sw8 1up5 1xfu 1xfv 1xfw 1xfx 1xfy 1xfz 1y6w 1yr5 1yrt 1yru 1zot 1zuz 2be6 2f3y 2f3z 2hf5 2jzi 2k0e 2k0f 2k0j 2k61 2kne 2kug 2kuh 2l53 2lgf 2ll6 2ll7 2lqc 2lqp 2lv6 2m0j 2m0k 2m55 2mg5 2n27 2n6a 2n77 2n8j 2r28 2v01 2v02 2vay 2w73 2wel 2x0g 2y4v 3bya 3cln 3dve 3dvj 3dvk 3dvm 3ewt 3ewv 3g43 3hr4 3j41 3oxq 3sui 3uct 3ucw 3ucy 4bw7 4bw8 4byf 4dck 4djc 4gow 4jpz 4jq0 4l79 4lzx 4m1l 4ovn 4q57 4q5u 4umo 4upu 4v0c 5coc 5dbr 5dow 5dsu 5ggm 5i0i 5j8h 5k7l 5k8q 5vms 5wsu 5wsv

(-) Related Entries Specified in the PDB File

4umo 4v0c