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4KIK

Human IkB kinase beta

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
Inhibitor of nuclear factor kappa-B kinase subunit betapolymer67778251.51UniProt (O14920)
Pfam (PF00069)
Pfam (PF18397)
Homo sapiens (human)I-kappa-B-kinase beta, IKK-B, IKK-beta, IkBKB, I-kappa-B kinase 2, IKK2, Nuclear factor NF-kappa-B inhibitor kinase beta, NFKBIKB
2B
(B)
Inhibitor of nuclear factor kappa-B kinase subunit betapolymer67778331.51UniProt (O14920)
Pfam (PF00069)
Pfam (PF18397)
Homo sapiens (human)I-kappa-B-kinase beta, IKK-B, IKK-beta, IkBKB, I-kappa-B kinase 2, IKK2, Nuclear factor NF-kappa-B inhibitor kinase beta, NFKBIKB
3C, D
(A, B)
K-252Anon-polymer467.52Chemie (KSA)
PubChem (3813)
PubChem (24867866)
PubChem (3035817)
PubChem (490561)
PubChem (49868185)
PubChem (127357)
PubChem (6610352)
PubChem (9890741)
PubChem (9912410)
PubChem (9912412)
PubChem (9912413)
PubChem (11612445)
PubChem (98053103)
PubChem (98118654)
PubChem (101713437)
PubChem (102446520)
PubChem (162981511)
PubChem (144411107)
PubChem (162981512)
4E, F
(A, B)
waterwater18.0221Chemie (HOH)
Sequence modifications
A: 2 - 664 (UniProt: O14920)
PDBExternal DatabaseDetails
Met -5-expression tag
His -4-expression tag
His -3-expression tag
His -2-expression tag
His -1-expression tag
His 0-expression tag
His 1-expression tag
Ser 665-expression tag
Pro 666-expression tag
Gly 667-expression tag
Arg 668-expression tag
Pro 669-expression tag
Leu 670-expression tag
Asn 671-expression tag
B: 2 - 664 (UniProt: O14920)
PDBExternal DatabaseDetails
Met -5-expression tag
His -4-expression tag
His -3-expression tag
His -2-expression tag
His -1-expression tag
His 0-expression tag
His 1-expression tag
Ser 665-expression tag
Pro 666-expression tag
Gly 667-expression tag
Arg 668-expression tag
Pro 669-expression tag
Leu 670-expression tag
Asn 671-expression tag
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains2
Total formula weight156583.1
Non-Polymers*Number of molecules2
Total formula weight934.9
All*Total formula weight157518.0
*Water molecules are not included.

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PDB entries from 2026-04-01

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