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4AAA

Crystal structure of the human CDKL2 kinase domain

Functional Information from GO Data
ChainGOidnamespacecontents
A0004672molecular_functionprotein kinase activity
A0005524molecular_functionATP binding
A0006468biological_processprotein phosphorylation
Functional Information from PDB Data
site_idAC1
Number of Residues19
DetailsBINDING SITE FOR RESIDUE DKI A 500
ChainResidue
AVAL10
ATHR86
AASP89
AGLU130
ALEU133
ACYS143
AASP144
AEDO501
AHOH2016
AHOH2022
AHOH2024
AGLY11
ATYR15
AVAL18
AVAL64
AGLU81
APHE82
AVAL83
AASP84

site_idAC2
Number of Residues7
DetailsBINDING SITE FOR RESIDUE EDO A 501
ChainResidue
APHE80
ACYS143
AASP144
ADKI500
AHOH2158
AHOH2257
AHOH2258

site_idAC3
Number of Residues4
DetailsBINDING SITE FOR RESIDUE EDO A 502
ChainResidue
AASP89
AGLU92
ASER119
AHIS120

site_idAC4
Number of Residues5
DetailsBINDING SITE FOR RESIDUE EDO A 503
ChainResidue
AILE243
ALYS244
AARG246
AHOH2199
AHOH2212

site_idAC5
Number of Residues4
DetailsBINDING SITE FOR RESIDUE EDO A 504
ChainResidue
AASN220
ALEU221
APRO223
AHOH2095

site_idAC6
Number of Residues3
DetailsBINDING SITE FOR RESIDUE EDO A 505
ChainResidue
AMET1
ATYR4
AASN6

site_idAC7
Number of Residues6
DetailsBINDING SITE FOR RESIDUE EDO A 506
ChainResidue
AGLY27
AILE29
AASP273
APHE277
AHOH2046
AHOH2234

Functional Information from PROSITE/UniProt
site_idPS00107
Number of Residues25
DetailsPROTEIN_KINASE_ATP Protein kinases ATP-binding region signature. VGEGSYGMVMkCrnkdtgriv.........AIKK
ChainResidueDetails
AVAL10-LYS34

site_idPS00108
Number of Residues13
DetailsPROTEIN_KINASE_ST Serine/Threonine protein kinases active-site signature. IiHrDIKpeNILV
ChainResidueDetails
AILE122-VAL134

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues6
DetailsMotif: {"description":"[NKR]KIAxRE"}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues1
DetailsActive site: {"description":"Proton acceptor","evidences":[{"source":"PROSITE-ProRule","id":"PRU00159","evidenceCode":"ECO:0000255"},{"source":"PROSITE-ProRule","id":"PRU10027","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues9
DetailsBinding site: {"evidences":[{"source":"PROSITE-ProRule","id":"PRU00159","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

238895

PDB entries from 2025-07-16

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