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(-) Description

Title :  CALCIUM-CALMODULIN COMPLEXED WITH THE CALMODULIN BINDING DOMAIN FROM A SMALL CONDUCTANCE POTASSIUM CHANNEL SPLICE VARIANT AND EBIO-1
 
Authors :  M. Zhang, J. M. Pascal, J. -F. Zhang
Date :  11 Jul 12  (Deposition) - 12 Sep 12  (Release) - 12 Sep 12  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.63
Chains :  Asym. Unit :  B,R
Biol. Unit 1:  B,R  (2x)
Keywords :  Protein-Protein Complex, Ef Hand, Metal Binding Protein, Metal Transport-Calcium Binding Protein Complex (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  M. Zhang, J. M. Pascal, M. Schumann, R. S. Armen, J. F. Zhang
Identification Of The Functional Binding Pocket For Compounds Targeting Small-Conductance Ca(2+)-Activated Potassium Channels.
Nat Commun V. 3 1021 2012
PubMed-ID: 22929778  |  Reference-DOI: 10.1038/NCOMMS2017

(-) Compounds

Molecule 1 - SMALL CONDUCTANCE CALCIUM-ACTIVATED POTASSIUM CHANNEL PROTEIN 2
    Chains: B
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Taxid: 562
    Fragment: CALMODULIN BINDING DOMAIN (UNP RESIDUES 396-487)
    Gene: KCNN2
    Organism Common: RAT
    Organism Scientific: RATTUS NORVEGICUS
    Organism Taxid: 10116
    Synonym: SMALL CONDUCTANCE POTASSIUM CHANNEL SPLICE VARIANT, SK2A, SK2, SKCA 2, SKCA2, KCA2.2
 
Molecule 2 - CALMODULIN
    Chains: R
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Taxid: 562
    Gene: CALM1, CALM, CAM, CAM1, CALM2, CAM2, CAMB, CALM3, CAM3, CAMC
    Organism Common: RAT
    Organism Scientific: RATTUS NORVEGICUS
    Organism Taxid: 10116
    Synonym: CAM

 Structural Features

(-) Chains, Units

  12
Asymmetric Unit : BR
Biological Unit 1 (2x): BR

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (4, 7)

Asymmetric Unit (4, 7)
No.NameCountTypeFull Name
10W81Ligand/Ion1-ETHYL-1,3-DIHYDRO-2H-BENZIMIDAZOL-2-ONE
2CA2Ligand/IonCALCIUM ION
3GOL1Ligand/IonGLYCEROL
4SO43Ligand/IonSULFATE ION
Biological Unit 1 (3, 10)
No.NameCountTypeFull Name
10W82Ligand/Ion1-ETHYL-1,3-DIHYDRO-2H-BENZIMIDAZOL-2-ONE
2CA-1Ligand/IonCALCIUM ION
3GOL2Ligand/IonGLYCEROL
4SO46Ligand/IonSULFATE ION

(-) Sites  (7, 7)

Asymmetric Unit (7, 7)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREARG B:429 , LYS B:451 , HIS B:452 , LYS B:455BINDING SITE FOR RESIDUE SO4 B 501
2AC2SOFTWAREASP R:20 , ASP R:22 , ASP R:24 , THR R:26 , GLU R:31 , HOH R:1101BINDING SITE FOR RESIDUE CA R 1001
3AC3SOFTWAREASP R:56 , ASP R:58 , ASN R:60 , THR R:62 , GLU R:67 , HOH R:1102BINDING SITE FOR RESIDUE CA R 1002
4AC4SOFTWAREILE R:100 , SER R:101 , GLU R:104 , GLN R:135 , HOH R:1119 , HOH R:1121 , HOH R:1129 , HOH R:1151BINDING SITE FOR RESIDUE GOL R 1003
5AC5SOFTWARELYS B:402 , ASP R:78 , THR R:79 , HOH R:1243BINDING SITE FOR RESIDUE SO4 R 1004
6AC6SOFTWARELYS R:30 , ARG R:126 , HOH R:1131 , HOH R:1191BINDING SITE FOR RESIDUE SO4 R 1005
7AC7SOFTWARELEU B:480 , VAL B:481 , MET R:51 , VAL R:55 , ILE R:63 , PHE R:68 , MET R:71 , MET R:72BINDING SITE FOR RESIDUE 0W8 R 1006

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 4G28)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 4G28)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 4G28)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 4G28)

(-) Exons   (0, 0)

(no "Exon" information available for 4G28)

(-) Sequences/Alignments

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 B from PDB  Type:PROTEIN  Length:87
                                                                                                                       
               SCOP domains d4g28b_ B: automated matches                                                            SCOP domains
               CATH domains --------------------------------------------------------------------------------------- CATH domains
               Pfam domains --------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .....ee....hhhhhhhhhhhhhhhhhhhhhhhhhhh....hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------- Transcript
                 4g28 B 395 GRKLELTKAEDTQLTKRVKNAAANVLRETWLIYKNTKLVKKIDHAKVRKHQRKFLQAIHQLRSVKMEQRKLNDQANTLVDLAKTQLE 489
                                   404|      422       432       442       452       462       472       482       
                                   404|                                                                            
                                    413                                                                            


Chain R from PDB  Type:PROTEIN  Length:146
                                                                                                                                                                                  
               SCOP domains d4g28r_ R: Calmodulin                                                                                                                              SCOP domains
               CATH domains -------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...hhhhhhhhhhhhhhhh.......hhhhhhhhhhhh....hhhhhhhhhhhhh.......hhhhhhhhhhh...ee.hhhhhhhhhhh.......eeehhhhhhhhh......hhhhhhhhhhhhh.....eeehhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 4g28 R   2 DQLTEEQIAEFKEAFSLFDKDGDGTITTKELGTVMRSLGQNPTEAELQDMINEVDADGNGTIDFPEFLTMMARKMKDTDSEEEIREAFRVFDKDGNGYISAAELRHVMTNLGEKLTDEEVDEMIREADIDGDGQVNYEEFVQMMTA 147
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141
   Legend:   → Mismatch (orange background)
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  extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '|'

 Classification and Annotation

(-) SCOP Domains  (2, 2)

Asymmetric Unit
(-)
Class: All alpha proteins (14657)
(-)
Class: Membrane and cell surface proteins and peptides (2046)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 4G28)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 4G28)

(-) Gene Ontology  (70, 72)

Asymmetric Unit(hide GO term definitions)

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 Related Entries

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

UniProtKB/Swiss-Prot
        CALM1_RAT | P0DP29: 1aji 1cm1 1cm4 1deg 1g4y 1k90 1k93 1lvc 1niw 1nkf 1qiv 1qiw 1qx5 1qx7 1sk6 1up5 2hqw 2mgu 2pq3 2ygg 3b32 3bxk 3bxl 3cln 3ek4 3ek7 3ek8 3ekh 3ekj 3evr 3evu 3evv 3ifk 3sg2 3sg3 3sg4 3sg5 3sg6 3sg7 3sjq 3wlc 3wld 4ehq 4g27 4i2y 4il1 4j9y 4j9z 4oy4 4qnh 4rjd
        CALM2_RAT | P0DP30: 1aji 1cm1 1cm4 1deg 1g4y 1k90 1k93 1lvc 1niw 1nkf 1qiv 1qiw 1qx5 1qx7 1sk6 1up5 2hqw 2mgu 2pq3 2ygg 3b32 3bxk 3bxl 3cln 3evr 3evu 3ifk 3sjq 4ehq 4g27 4i2y 4il1 4j9y 4j9z 4oy4 4qnh 4rjd
        CALM3_RAT | P0DP31: 1aji 1cm1 1cm4 1deg 1g4y 1k90 1k93 1lvc 1niw 1nkf 1qiv 1qiw 1qx5 1qx7 1sk6 1up5 2hqw 2mgu 2pq3 2ygg 3b32 3bxk 3bxl 3cln 3evr 3evu 3ifk 3sjq 4ehq 4g27 4i2y 4il1 4j9y 4j9z 4oy4 4qnh 4rjd
        KCNN2_RAT | P70604: 1g4y 1kkd 1qx7 2pnv 3sjq 4g27 4j9y 4j9z 4qnh

(-) Related Entries Specified in the PDB File

1g4y 3sjq 4g27