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4BB2

Crystal structure of cleaved corticosteroid-binding globulin in complex with progesterone

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
CORTICOSTEROID-BINDING GLOBULINpolymer34037502.41UniProt (P08185)
Pfam (PF00079)
HOMO SAPIENS (HUMAN)CBG, SERPIN A6, TRANSCORTIN
2B
(B)
CORTICOSTEROID-BINDING GLOBULINpolymer344083.91UniProt (P08185)HOMO SAPIENS (HUMAN)CBG, SERPIN A6, TRANSCORTIN
3C, D, E, F, G
(A)
1,2-ETHANEDIOLnon-polymer62.15Chemie (EDO)
4H
(A)
CYSTEINEnon-polymer121.21Chemie (CYS)
5I
(B)
PROGESTERONEnon-polymer314.51Chemie (STR)
6J, K
(A, B)
waterwater18.0111Chemie (HOH)
Sequence modifications
A: 11 - 349 (UniProt: P08185)
PDBExternal DatabaseDetails
Gly 10-expression tag
Ala 126Lys 148engineered mutation
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains2
Total formula weight41586.3
Non-Polymers*Number of molecules7
Total formula weight746.0
All*Total formula weight42332.3
*Water molecules are not included.

246031

PDB entries from 2025-12-10

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