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4RR2

Crystal structure of human primase

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A, C
(A, C)
DNA primase small subunitpolymer42049981.02UniProt (P49642)
Pfam (PF01896)
Homo sapiens (human)DNA primase 49 kDa subunit, p49
2B, D
(B, D)
DNA primase large subunitpolymer50958890.92UniProt (P49643)
Pfam (PF04104)
Homo sapiens (human)DNA primase 58 kDa subunit, p58
3E, F
(A, C)
ZINC IONnon-polymer65.42Chemie (ZN)
4G
(D)
IRON/SULFUR CLUSTERnon-polymer351.61Chemie (SF4)
5H, I, J, K
(A, B, C, D)
waterwater18.088Chemie (HOH)
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains4
Total formula weight217743.9
Non-Polymers*Number of molecules3
Total formula weight482.5
All*Total formula weight218226.3
*Water molecules are not included.

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PDB entries from 2025-07-02

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