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2W4U

Isometrically contracting insect asynchronous flight muscle quick frozen after a length step

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A, D, G, J
(0, 3, 6, 9)
TROPONIN C, SKELETAL MUSCLEpolymer15917971.84UniProt (P02588)
Pfam (PF13499)
Pfam (PF00036)
GALLUS GALLUS (CHICKEN)TNNC2
2B, E, H, IA
(1, 4, 7, Y)
TROPONIN T, FAST SKELETAL MUSCLE ISOFORMSpolymer9010976.64UniProt (P12620)
Pfam (PF00992)
GALLUS GALLUS (CHICKEN)TNNT3
3C, F, I, JA
(2, 5, 8, Z)
TROPONIN I, FAST SKELETAL MUSCLEpolymer14116305.04UniProt (P68246)
Pfam (PF00992)
GALLUS GALLUS (CHICKEN)TROPONIN I, FAST-TWITCH ISOFORM, TNNI2
4DA, EA, FA, GA, HA...
(A, B, C, T, U...)
TROPOMYOSIN ALPHA-1 CHAINpolymer27731917.68UniProt (P58772)
Pfam (PF00261)
ORYCTOLAGUS CUNICULUS (RABBIT)TROPOMYOSIN-1, TPM1, TPMA
5AA, BA, CA, N, O...
(D, E, F, G, H...)
ACTIN, ALPHA SKELETAL MUSCLEpolymer37241483.116UniProt (P68135)
Pfam (PF00022)
ORYCTOLAGUS CUNICULUS (RABBIT)ALPHA-ACTIN-1, ACTA1, ACTA
Sequence modifications
2, 5, 8, Z: 3 - 143 (UniProt: P68246)
PDBExternal DatabaseDetails
Ser 48Cys 49conflict
Ser 64Cys 65conflict
Ile 89Asn 90conflict
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains36
Total formula weight1100083.8
All*Total formula weight1100083.8
*Water molecules are not included.

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PDB entries from 2025-12-17

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