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9O51

Cryo-EM structure of the human SK2-4 chimera/calmodulin channel complex in the Ca2+ free state

Functional Information from PROSITE/UniProt
site_idPS00018
Number of Residues13
DetailsEF_HAND_1 EF-hand calcium-binding domain. DKDGDGTITtkEL
ChainResidueDetails
EASP21-LEU33
EASP57-PHE69
EASP94-LEU106
EASP130-PHE142

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues80
DetailsTransmembrane: {"description":"Helical; Name=Segment S1","evidences":[{"evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues80
DetailsTransmembrane: {"description":"Helical; Name=Segment S2","evidences":[{"evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues160
DetailsTransmembrane: {"description":"Helical; Name=Segment S4","evidences":[{"evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues160
DetailsTransmembrane: {"description":"Helical; Name=Segment S5","evidences":[{"evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues160
DetailsIntramembrane: {"description":"Pore-forming; Name=Segment H5","evidences":[{"evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues160
DetailsTransmembrane: {"description":"Helical; Name=Segment S6","evidences":[{"evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues244
DetailsRegion: {"description":"Calmodulin-binding"}
ChainResidueDetails

site_idSWS_FT_FI8
Number of Residues4
DetailsModified residue: {"description":"Phosphohistidine","evidences":[{"source":"PubMed","id":"17157250","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI9
Number of Residues80
DetailsTransmembrane: {"description":"Helical; Name=Segment S3","evidences":[{"evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI10
Number of Residues4
DetailsModified residue: {"description":"Phosphotyrosine","evidences":[{"source":"UniProtKB","id":"P70604","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI11
Number of Residues20
DetailsBinding site: {"evidences":[{"source":"PROSITE-ProRule","id":"PRU00448","evidenceCode":"ECO:0000255"},{"source":"PubMed","id":"1474585","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"27564677","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"29724949","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1CLL","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"5J03","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"6CNN","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"6CNO","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI12
Number of Residues12
DetailsBinding site: {"evidences":[{"source":"PROSITE-ProRule","id":"PRU00448","evidenceCode":"ECO:0000255"},{"source":"PubMed","id":"1474585","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"27564677","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1CLL","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"5J03","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI13
Number of Residues4
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"PubMed","id":"23186163","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI14
Number of Residues4
DetailsModified residue: {"description":"N6-acetyllysine","evidences":[{"source":"PubMed","id":"19608861","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI15
Number of Residues4
DetailsModified residue: {"description":"Phosphotyrosine","evidences":[{"source":"PubMed","id":"18669648","evidenceCode":"ECO:0007744"},{"source":"PubMed","id":"19690332","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI16
Number of Residues4
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"PubMed","id":"21406692","evidenceCode":"ECO:0007744"},{"source":"PubMed","id":"23186163","evidenceCode":"ECO:0007744"},{"source":"PubMed","id":"24275569","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI17
Number of Residues4
DetailsModified residue: {"description":"Phosphothreonine","evidences":[{"source":"PubMed","id":"24275569","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI18
Number of Residues4
DetailsModified residue: {"description":"Phosphotyrosine","evidences":[{"source":"PubMed","id":"19690332","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

238895

PDB entries from 2025-07-16

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