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1QX2

X-ray Structure of Calcium-loaded Calbindomodulin (A Calbindin D9k Re-engineered to Undergo a Conformational Opening) at 1.44 A Resolution

Functional Information from GO Data
ChainGOidnamespacecontents
A0005499molecular_functionvitamin D binding
A0005509molecular_functioncalcium ion binding
A0005737cellular_componentcytoplasm
A0016323cellular_componentbasolateral plasma membrane
A0016324cellular_componentapical plasma membrane
A0046872molecular_functionmetal ion binding
A0048306molecular_functioncalcium-dependent protein binding
B0005499molecular_functionvitamin D binding
B0005509molecular_functioncalcium ion binding
B0005737cellular_componentcytoplasm
B0016323cellular_componentbasolateral plasma membrane
B0016324cellular_componentapical plasma membrane
B0046872molecular_functionmetal ion binding
B0048306molecular_functioncalcium-dependent protein binding
Functional Information from PDB Data
site_idAC1
Number of Residues6
DetailsBINDING SITE FOR RESIDUE CA A 1001
ChainResidue
AASP54
AASN56
AASP58
AGLU60
AGLU65
AHOH1017

site_idAC2
Number of Residues6
DetailsBINDING SITE FOR RESIDUE CA B 1002
ChainResidue
BGLU60
BGLU65
BHOH1016
BASP54
BASN56
BASP58

site_idAC3
Number of Residues4
DetailsBINDING SITE FOR RESIDUE ZN B 1003
ChainResidue
AGLU11
AASP47
AHOH1114
BGLU5

site_idAC4
Number of Residues4
DetailsBINDING SITE FOR RESIDUE ZN B 1004
ChainResidue
AGLU5
BGLU11
BGLU48
BGLU51

site_idAC5
Number of Residues6
DetailsBINDING SITE FOR RESIDUE CA A 1005
ChainResidue
AALA14
AGLU17
AASP19
AGLN22
AGLU27
AHOH1010

site_idAC6
Number of Residues6
DetailsBINDING SITE FOR RESIDUE CA B 1006
ChainResidue
BALA14
BGLY18
BASP19
BGLN22
BGLU27
BHOH1010

Functional Information from PROSITE/UniProt
site_idPS00018
Number of Residues13
DetailsEF_HAND_1 EF-hand calcium-binding domain. DKNGDGEVSfeEF
ChainResidueDetails
AASP54-PHE66

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues70
DetailsDomain: {"description":"EF-hand 1","evidences":[{"evidenceCode":"ECO:0000305"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues4
DetailsBinding site: {"evidences":[{"evidenceCode":"ECO:0000305"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues10
DetailsBinding site: {"evidences":[{"source":"PROSITE-ProRule","id":"PRU00448","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues2
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"UniProtKB","id":"P02634","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

244349

PDB entries from 2025-11-05

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