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3HR4

Human iNOS Reductase and Calmodulin Complex

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A, C, E, G
(A, C, E, G)
Nitric oxide synthase, induciblepolymer21925045.04UniProt (P35228)
Pfam (PF00258)
Homo sapiens (human)Inducible NO synthase, Inducible NOS, iNOS, NOS type II, Hepatocyte NOS, HEP-NOS
2B, D, F, H
(B, D, F, H)
Calmodulinpolymer14916852.54UniProt (P62158)
Pfam (PF13499)
UniProt (by SIFTS) (P0DP23)
Homo sapiens (human)CaM
3I, N, S, X
(A, C, E, G)
FLAVIN MONONUCLEOTIDEnon-polymer456.34Chemie (FMN)
PubChem (710)
PubChem (8965)
PubChem (23585816)
PubChem (643976)
PubChem (51435500)
PubChem (51435503)
PubChem (5702760)
PubChem (7048779)
PubChem (7048781)
PubChem (15559251)
4AA, BA, J, K, L...
(H, B, D, F)
CALCIUM IONnon-polymer40.116Chemie (CA)
PubChem (271)
5CA, DA, EA, FA, GA...
(A, B, C, D, E...)
waterwater18.071Chemie (HOH)
Sequence modifications
A, C, E, G: 503 - 715 (UniProt: P35228)
PDBExternal DatabaseDetails
His 497-expression tag
His 498-expression tag
His 499-expression tag
His 500-expression tag
His 501-expression tag
His 502-expression tag
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains8
Total formula weight167590.2
Non-Polymers*Number of molecules20
Total formula weight2466.6
All*Total formula weight170056.8
*Water molecules are not included.

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PDB entries from 2026-04-01

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