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(-) Description

Title :  CARBOXYSOME SHELL PROTEIN CCMK2
 
Authors :  C. A. Kerfeld, M. R. Sawaya, S. Tanaka, C. V. Nguyen, M. Phillips, M. Beeb T. O. Yeates
Date :  20 Jun 05  (Deposition) - 09 Aug 05  (Release) - 13 Jul 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.90
Chains :  Asym. Unit :  A,B,C,D,E,F,G,H,I,J,K,L
Biol. Unit 1:  A,B,C,D,E,F  (1x)
Biol. Unit 2:  G,H,I,J,K,L  (1x)
Keywords :  Cyclic Hexamer; C6 Point Symmetry, Carboxysome (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  C. A. Kerfeld, M. R. Sawaya, S. Tanaka, C. V. Nguyen, M. Phillips, M. Beeby, T. O. Yeates
Protein Structures Forming The Shell Of Primitive Bacterial Organelles
Science V. 309 936 2005
PubMed-ID: 16081736  |  Reference-DOI: 10.1126/SCIENCE.1113397

(-) Compounds

Molecule 1 - CARBON DIOXIDE CONCENTRATING MECHANISM PROTEIN CCMK HOMOLOG 2
    ChainsA, B, C, D, E, F, G, H, I, J, K, L
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System PlasmidPET22B
    Expression System StrainBL21-GOLD DE3
    Expression System Taxid562
    Expression System Vector TypePLASMID
    GeneCCMK2
    MutationYES
    Organism ScientificSYNECHOCYSTIS SP.
    Organism Taxid1148
    StrainPCC 6803
    SynonymCCMK2

 Structural Features

(-) Chains, Units

  123456789101112
Asymmetric Unit ABCDEFGHIJKL
Biological Unit 1 (1x)ABCDEF      
Biological Unit 2 (1x)      GHIJKL

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (0, 0)

(no "Ligand,Modified Residues,Ions" information available for 2A1B)

(-) Sites  (0, 0)

(no "Site" information available for 2A1B)

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 2A1B)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 2A1B)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 2A1B)

(-) PROSITE Motifs  (1, 12)

Asymmetric Unit (1, 12)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1BACT_MICROCOMPPS01139 Bacterial microcompartiments proteins signature.CCMK2_SYNY321-40
 
 
 
 
 
 
 
 
 
 
 
  12A:21-40
B:21-40
C:21-40
D:21-40
E:21-40
F:21-40
G:21-40
H:21-40
I:21-40
J:21-40
K:21-40
L:21-40
Biological Unit 1 (1, 6)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1BACT_MICROCOMPPS01139 Bacterial microcompartiments proteins signature.CCMK2_SYNY321-40
 
 
 
 
 
 
 
 
 
 
 
  6A:21-40
B:21-40
C:21-40
D:21-40
E:21-40
F:21-40
-
-
-
-
-
-
Biological Unit 2 (1, 6)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1BACT_MICROCOMPPS01139 Bacterial microcompartiments proteins signature.CCMK2_SYNY321-40
 
 
 
 
 
 
 
 
 
 
 
  6-
-
-
-
-
-
G:21-40
H:21-40
I:21-40
J:21-40
K:21-40
L:21-40

(-) Exons   (0, 0)

(no "Exon" information available for 2A1B)

(-) 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 A from PDB  Type:PROTEIN  Length:101
 aligned with CCMK2_SYNY3 | P72761 from UniProtKB/Swiss-Prot  Length:103

    Alignment length:101
                                    11        21        31        41        51        61        71        81        91       101 
          CCMK2_SYNY3     2 SIAVGMIETRGFPAVVEAADSMVKAARVTLVGYEKIGSGRVTVIVRGDVSEVQASVSAGIEAANRVNGGEVLSTHIIARPHENLEYVLPIRYTEEVEQFRT 102
               SCOP domains d2a1ba1 A:2-102 Carboxysome shell protein CcmK2                                                       SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...eeeeeee.hhhhhhhhhhhhhhh..eeeeeee....eeeeeee.hhhhhhhhhhhhhhhhhh....eeeeeeee...hhhhhh.........hhhhhh Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------BACT_MICROCOMP      -------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------- Transcript
                 2a1b A   2 SIAVGMIETRGFPAVVEAADSMVKAARVTLVGYEKIGSGRVTVIVRGDVSGVQASVSAGIEAANRVNGGEVLSTHIIARPHENLEYVLPIRYTEEVEQFRT 102
                                    11        21        31        41        51        61        71        81        91       101 

Chain B from PDB  Type:PROTEIN  Length:101
 aligned with CCMK2_SYNY3 | P72761 from UniProtKB/Swiss-Prot  Length:103

    Alignment length:101
                                    11        21        31        41        51        61        71        81        91       101 
          CCMK2_SYNY3     2 SIAVGMIETRGFPAVVEAADSMVKAARVTLVGYEKIGSGRVTVIVRGDVSEVQASVSAGIEAANRVNGGEVLSTHIIARPHENLEYVLPIRYTEEVEQFRT 102
               SCOP domains d2a1bb_ B: Carboxysome shell protein CcmK2                                                            SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...eeeeeee.hhhhhhhhhhhhhhh..eeeeeee....eeeeeee.hhhhhhhhhhhhhhhhhh....eeeeeeee...hhhhhh.........hhhhhh Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------BACT_MICROCOMP      -------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------- Transcript
                 2a1b B   2 SIAVGMIETRGFPAVVEAADSMVKAARVTLVGYEKIGSGRVTVIVRGDVSGVQASVSAGIEAANRVNGGEVLSTHIIARPHENLEYVLPIRYTEEVEQFRT 102
                                    11        21        31        41        51        61        71        81        91       101 

Chain C from PDB  Type:PROTEIN  Length:101
 aligned with CCMK2_SYNY3 | P72761 from UniProtKB/Swiss-Prot  Length:103

    Alignment length:101
                                    11        21        31        41        51        61        71        81        91       101 
          CCMK2_SYNY3     2 SIAVGMIETRGFPAVVEAADSMVKAARVTLVGYEKIGSGRVTVIVRGDVSEVQASVSAGIEAANRVNGGEVLSTHIIARPHENLEYVLPIRYTEEVEQFRT 102
               SCOP domains d2a1bc_ C: Carboxysome shell protein CcmK2                                                            SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...eeeeeee.hhhhhhhhhhhhhhh..eeeeeee....eeeeeee.hhhhhhhhhhhhhhhhhh....eeeeeeee...hhhhhh.........hhhhhh Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------BACT_MICROCOMP      -------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------- Transcript
                 2a1b C   2 SIAVGMIETRGFPAVVEAADSMVKAARVTLVGYEKIGSGRVTVIVRGDVSGVQASVSAGIEAANRVNGGEVLSTHIIARPHENLEYVLPIRYTEEVEQFRT 102
                                    11        21        31        41        51        61        71        81        91       101 

Chain D from PDB  Type:PROTEIN  Length:101
 aligned with CCMK2_SYNY3 | P72761 from UniProtKB/Swiss-Prot  Length:103

    Alignment length:101
                                    11        21        31        41        51        61        71        81        91       101 
          CCMK2_SYNY3     2 SIAVGMIETRGFPAVVEAADSMVKAARVTLVGYEKIGSGRVTVIVRGDVSEVQASVSAGIEAANRVNGGEVLSTHIIARPHENLEYVLPIRYTEEVEQFRT 102
               SCOP domains d2a1bd_ D: Carboxysome shell protein CcmK2                                                            SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...eeeeeee.hhhhhhhhhhhhhhh..eeeeeee....eeeeeee.hhhhhhhhhhhhhhhhhh....eeeeeeee...hhhhhh.........hhhhhh Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------BACT_MICROCOMP      -------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------- Transcript
                 2a1b D   2 SIAVGMIETRGFPAVVEAADSMVKAARVTLVGYEKIGSGRVTVIVRGDVSGVQASVSAGIEAANRVNGGEVLSTHIIARPHENLEYVLPIRYTEEVEQFRT 102
                                    11        21        31        41        51        61        71        81        91       101 

Chain E from PDB  Type:PROTEIN  Length:101
 aligned with CCMK2_SYNY3 | P72761 from UniProtKB/Swiss-Prot  Length:103

    Alignment length:101
                                    11        21        31        41        51        61        71        81        91       101 
          CCMK2_SYNY3     2 SIAVGMIETRGFPAVVEAADSMVKAARVTLVGYEKIGSGRVTVIVRGDVSEVQASVSAGIEAANRVNGGEVLSTHIIARPHENLEYVLPIRYTEEVEQFRT 102
               SCOP domains d2a1be_ E: Carboxysome shell protein CcmK2                                                            SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...eeeeeee.hhhhhhhhhhhhhhh..eeeeeee....eeeeeee.hhhhhhhhhhhhhhhhhh....eeeeeeee...hhhhhh.........hhhhhh Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------BACT_MICROCOMP      -------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------- Transcript
                 2a1b E   2 SIAVGMIETRGFPAVVEAADSMVKAARVTLVGYEKIGSGRVTVIVRGDVSGVQASVSAGIEAANRVNGGEVLSTHIIARPHENLEYVLPIRYTEEVEQFRT 102
                                    11        21        31        41        51        61        71        81        91       101 

Chain F from PDB  Type:PROTEIN  Length:101
 aligned with CCMK2_SYNY3 | P72761 from UniProtKB/Swiss-Prot  Length:103

    Alignment length:101
                                    11        21        31        41        51        61        71        81        91       101 
          CCMK2_SYNY3     2 SIAVGMIETRGFPAVVEAADSMVKAARVTLVGYEKIGSGRVTVIVRGDVSEVQASVSAGIEAANRVNGGEVLSTHIIARPHENLEYVLPIRYTEEVEQFRT 102
               SCOP domains d2a1bf_ F: Carboxysome shell protein CcmK2                                                            SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...eeeeeee.hhhhhhhhhhhhhhh..eeeeeee....eeeeeee.hhhhhhhhhhhhhhhhhh....eeeeeeee...hhhhhh.........hhhhhh Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------BACT_MICROCOMP      -------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------- Transcript
                 2a1b F   2 SIAVGMIETRGFPAVVEAADSMVKAARVTLVGYEKIGSGRVTVIVRGDVSGVQASVSAGIEAANRVNGGEVLSTHIIARPHENLEYVLPIRYTEEVEQFRT 102
                                    11        21        31        41        51        61        71        81        91       101 

Chain G from PDB  Type:PROTEIN  Length:101
 aligned with CCMK2_SYNY3 | P72761 from UniProtKB/Swiss-Prot  Length:103

    Alignment length:101
                                    11        21        31        41        51        61        71        81        91       101 
          CCMK2_SYNY3     2 SIAVGMIETRGFPAVVEAADSMVKAARVTLVGYEKIGSGRVTVIVRGDVSEVQASVSAGIEAANRVNGGEVLSTHIIARPHENLEYVLPIRYTEEVEQFRT 102
               SCOP domains d2a1bg_ G: Carboxysome shell protein CcmK2                                                            SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...eeeeeee.hhhhhhhhhhhhhhh..eeeeeee....eeeeeee.hhhhhhhhhhhhhhhhhh....eeeeeeee...hhhhhh.........hhhhhh Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------BACT_MICROCOMP      -------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------- Transcript
                 2a1b G   2 SIAVGMIETRGFPAVVEAADSMVKAARVTLVGYEKIGSGRVTVIVRGDVSGVQASVSAGIEAANRVNGGEVLSTHIIARPHENLEYVLPIRYTEEVEQFRT 102
                                    11        21        31        41        51        61        71        81        91       101 

Chain H from PDB  Type:PROTEIN  Length:101
 aligned with CCMK2_SYNY3 | P72761 from UniProtKB/Swiss-Prot  Length:103

    Alignment length:101
                                    11        21        31        41        51        61        71        81        91       101 
          CCMK2_SYNY3     2 SIAVGMIETRGFPAVVEAADSMVKAARVTLVGYEKIGSGRVTVIVRGDVSEVQASVSAGIEAANRVNGGEVLSTHIIARPHENLEYVLPIRYTEEVEQFRT 102
               SCOP domains d2a1bh_ H: Carboxysome shell protein CcmK2                                                            SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...eeeeeee.hhhhhhhhhhhhhhh..eeeeeee....eeeeeee.hhhhhhhhhhhhhhhhhh....eeeeeeee...hhhhhh.........hhhhhh Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------BACT_MICROCOMP      -------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------- Transcript
                 2a1b H   2 SIAVGMIETRGFPAVVEAADSMVKAARVTLVGYEKIGSGRVTVIVRGDVSGVQASVSAGIEAANRVNGGEVLSTHIIARPHENLEYVLPIRYTEEVEQFRT 102
                                    11        21        31        41        51        61        71        81        91       101 

Chain I from PDB  Type:PROTEIN  Length:101
 aligned with CCMK2_SYNY3 | P72761 from UniProtKB/Swiss-Prot  Length:103

    Alignment length:101
                                    11        21        31        41        51        61        71        81        91       101 
          CCMK2_SYNY3     2 SIAVGMIETRGFPAVVEAADSMVKAARVTLVGYEKIGSGRVTVIVRGDVSEVQASVSAGIEAANRVNGGEVLSTHIIARPHENLEYVLPIRYTEEVEQFRT 102
               SCOP domains d2a1bi_ I: Carboxysome shell protein CcmK2                                                            SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...eeeeeee.hhhhhhhhhhhhhhh..eeeeeee....eeeeeee.hhhhhhhhhhhhhhhhhh....eeeeeeee...hhhhhh.........hhhhhh Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------BACT_MICROCOMP      -------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------- Transcript
                 2a1b I   2 SIAVGMIETRGFPAVVEAADSMVKAARVTLVGYEKIGSGRVTVIVRGDVSGVQASVSAGIEAANRVNGGEVLSTHIIARPHENLEYVLPIRYTEEVEQFRT 102
                                    11        21        31        41        51        61        71        81        91       101 

Chain J from PDB  Type:PROTEIN  Length:101
 aligned with CCMK2_SYNY3 | P72761 from UniProtKB/Swiss-Prot  Length:103

    Alignment length:101
                                    11        21        31        41        51        61        71        81        91       101 
          CCMK2_SYNY3     2 SIAVGMIETRGFPAVVEAADSMVKAARVTLVGYEKIGSGRVTVIVRGDVSEVQASVSAGIEAANRVNGGEVLSTHIIARPHENLEYVLPIRYTEEVEQFRT 102
               SCOP domains d2a1bj_ J: Carboxysome shell protein CcmK2                                                            SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...eeeeeee.hhhhhhhhhhhhhhh..eeeeeee....eeeeeee.hhhhhhhhhhhhhhhhhh....eeeeeeee...hhhhhh.........hhhhhh Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------BACT_MICROCOMP      -------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------- Transcript
                 2a1b J   2 SIAVGMIETRGFPAVVEAADSMVKAARVTLVGYEKIGSGRVTVIVRGDVSGVQASVSAGIEAANRVNGGEVLSTHIIARPHENLEYVLPIRYTEEVEQFRT 102
                                    11        21        31        41        51        61        71        81        91       101 

Chain K from PDB  Type:PROTEIN  Length:101
 aligned with CCMK2_SYNY3 | P72761 from UniProtKB/Swiss-Prot  Length:103

    Alignment length:101
                                    11        21        31        41        51        61        71        81        91       101 
          CCMK2_SYNY3     2 SIAVGMIETRGFPAVVEAADSMVKAARVTLVGYEKIGSGRVTVIVRGDVSEVQASVSAGIEAANRVNGGEVLSTHIIARPHENLEYVLPIRYTEEVEQFRT 102
               SCOP domains d2a1bk_ K: Carboxysome shell protein CcmK2                                                            SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...eeeeeee.hhhhhhhhhhhhhhh..eeeeeee....eeeeeee.hhhhhhhhhhhhhhhhhh....eeeeeeee...hhhhhh.........hhhhhh Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------BACT_MICROCOMP      -------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------- Transcript
                 2a1b K   2 SIAVGMIETRGFPAVVEAADSMVKAARVTLVGYEKIGSGRVTVIVRGDVSGVQASVSAGIEAANRVNGGEVLSTHIIARPHENLEYVLPIRYTEEVEQFRT 102
                                    11        21        31        41        51        61        71        81        91       101 

Chain L from PDB  Type:PROTEIN  Length:101
 aligned with CCMK2_SYNY3 | P72761 from UniProtKB/Swiss-Prot  Length:103

    Alignment length:101
                                    11        21        31        41        51        61        71        81        91       101 
          CCMK2_SYNY3     2 SIAVGMIETRGFPAVVEAADSMVKAARVTLVGYEKIGSGRVTVIVRGDVSEVQASVSAGIEAANRVNGGEVLSTHIIARPHENLEYVLPIRYTEEVEQFRT 102
               SCOP domains d2a1bl_ L: Carboxysome shell protein CcmK2                                                            SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...eeeeeee.hhhhhhhhhhhhhhh..eeeeeee....eeeeeee.hhhhhhhhhhhhhhhhhh....eeeeeeee....hhhhhh........hhhhhh Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------BACT_MICROCOMP      -------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------- Transcript
                 2a1b L   2 SIAVGMIETRGFPAVVEAADSMVKAARVTLVGYEKIGSGRVTVIVRGDVSGVQASVSAGIEAANRVNGGEVLSTHIIARPHENLEYVLPIRYTEEVEQFRT 102
                                    11        21        31        41        51        61        71        81        91       101 

   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  (1, 12)

Asymmetric Unit

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 2A1B)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 2A1B)

(-) Gene Ontology  (0, 0)

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    (no "Gene Ontology" information available for 2A1B)

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 Related Entries

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

UniProtKB/Swiss-Prot
        CCMK2_SYNY3 | P727613cim 3dnc

(-) Related Entries Specified in the PDB File

2a10 CCMK4, AN ORTHOLOG AND ALSO A COMPONENT OF THE CARBOXYSOME SHELL.
2a18 CCMK4, AN ORTHOLOG AND ALSO A COMPONENT OF THE CARBOXYSOME SHELL