1o1b Summary

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MOLECULAR MODELS OF AVERAGED RIGOR CROSSBRIDGES FROM TOMOGRAMS OF INSECT FLIGHT MUSCLE

The structure was published by Chen, L.F., Winkler, H., Reedy, M.K., Reedy, M.C., and Taylor, K.A., in 2002 in a paper entitled "Molecular Modeling of Averaged Rigor Crossbridges from Tomograms of Insect Flight Muscle" (abstract).

The structure was determined using Electron microscopy at a resolution of 70.0 Å and deposited in 2002.

The experimental data on which the structure is based was deposited separately in EMDB as entry 1001.

This entry contains 26 copies of 4 unique biopolymers (complete list).

The most likely quaternary structure is a 26meric assembly.

The following tables show cross-reference information to other databases (to obtain a list of all PDB entries sharing the same property or classification, click on the magnifying glass icon):


Chain Name UniProt Name of source organism % of UniProt sequence present in the sample Residues in the sample molecules % of residues observed
A SKELETAL MUSCLE MYOSIN II P13538 (5-844) (MYSS_CHICK)search Gallus gallussearch < 90% 840 100%
D SKELETAL MUSCLE MYOSIN II P13538 (5-844) (MYSS_CHICK)search Gallus gallussearch < 90% 840 100%
G SKELETAL MUSCLE MYOSIN II P13538 (5-844) (MYSS_CHICK)search Gallus gallussearch < 90% 840 100%
J SKELETAL MUSCLE MYOSIN II P13538 (5-844) (MYSS_CHICK)search Gallus gallussearch < 90% 840 100%
B SKELETAL MUSCLE MYOSIN II REGULATORY LIGHT CHAIN P02609 (26-164) (MLRS_CHICK)search Gallus gallussearch 99% 145 100%
E SKELETAL MUSCLE MYOSIN II REGULATORY LIGHT CHAIN P02609 (26-164) (MLRS_CHICK)search Gallus gallussearch 99% 145 100%
H SKELETAL MUSCLE MYOSIN II REGULATORY LIGHT CHAIN P02609 (26-164) (MLRS_CHICK)search Gallus gallussearch 99% 145 100%
K SKELETAL MUSCLE MYOSIN II REGULATORY LIGHT CHAIN P02609 (26-164) (MLRS_CHICK)search Gallus gallussearch 99% 145 100%
C SKELETAL MUSCLE MYOSIN II ESSENTIAL LIGHT CHAIN P02605 (10-150) (MLE3_CHICK)search Gallus gallussearch 94% 147 100%
F SKELETAL MUSCLE MYOSIN II ESSENTIAL LIGHT CHAIN P02605 (10-150) (MLE3_CHICK)search Gallus gallussearch 94% 147 100%
I SKELETAL MUSCLE MYOSIN II ESSENTIAL LIGHT CHAIN P02605 (10-150) (MLE3_CHICK)search Gallus gallussearch 94% 147 100%
L SKELETAL MUSCLE MYOSIN II ESSENTIAL LIGHT CHAIN P02605 (10-150) (MLE3_CHICK)search Gallus gallussearch 94% 147 100%
0 SKELETAL MUSCLE ACTIN P68135 (3-377) (ACTS_RABIT)search Oryctolagus cuniculussearch 95% 375 99%
1 SKELETAL MUSCLE ACTIN P68135 (3-377) (ACTS_RABIT)search Oryctolagus cuniculussearch 95% 375 99%
2 SKELETAL MUSCLE ACTIN P68135 (3-377) (ACTS_RABIT)search Oryctolagus cuniculussearch 95% 375 99%
3 SKELETAL MUSCLE ACTIN P68135 (3-377) (ACTS_RABIT)search Oryctolagus cuniculussearch 95% 375 99%
4 SKELETAL MUSCLE ACTIN P68135 (3-377) (ACTS_RABIT)search Oryctolagus cuniculussearch 95% 375 99%
5 SKELETAL MUSCLE ACTIN P68135 (3-377) (ACTS_RABIT)search Oryctolagus cuniculussearch 95% 375 99%
7 SKELETAL MUSCLE ACTIN P68135 (3-377) (ACTS_RABIT)search Oryctolagus cuniculussearch 95% 375 99%
8 SKELETAL MUSCLE ACTIN P68135 (3-377) (ACTS_RABIT)search Oryctolagus cuniculussearch 95% 375 99%
9 SKELETAL MUSCLE ACTIN P68135 (3-377) (ACTS_RABIT)search Oryctolagus cuniculussearch 95% 375 99%
V SKELETAL MUSCLE ACTIN P68135 (3-377) (ACTS_RABIT)search Oryctolagus cuniculussearch 95% 375 99%
W SKELETAL MUSCLE ACTIN P68135 (3-377) (ACTS_RABIT)search Oryctolagus cuniculussearch 95% 375 99%
X SKELETAL MUSCLE ACTIN P68135 (3-377) (ACTS_RABIT)search Oryctolagus cuniculussearch 95% 375 99%
Y SKELETAL MUSCLE ACTIN P68135 (3-377) (ACTS_RABIT)search Oryctolagus cuniculussearch 95% 375 99%
Z SKELETAL MUSCLE ACTIN P68135 (3-377) (ACTS_RABIT)search Oryctolagus cuniculussearch 95% 375 99%


This entry contains 4 unique UniProt proteins:

UniProt accession Name Organism PDB
P13538 (5 - 844) SKELETAL MUSCLE MYOSIN II Gallus gallus
P02609 (26 - 164) SKELETAL MUSCLE MYOSIN II REGULATORY LIGHT CHAIN Gallus gallus
P02605 (10 - 150) SKELETAL MUSCLE MYOSIN II ESSENTIAL LIGHT CHAIN Gallus gallus
P68135 (3 - 377) SKELETAL MUSCLE ACTIN Oryctolagus cuniculus

Chain Structural classification (SCOP) Sequence family (Pfam)
A, D, G, J Muscle protein complexessearch Myosin head (motor domain)search, Myosin N-terminal SH3-like domainsearch
B, E, H, K (P02609) Muscle protein complexessearch
C, F, I, L (P02605) Muscle protein complexessearch PF13405: EF-hand domainsearch, PF13499: EF-hand domain pairsearch
0, 1, 2, 3, 4, 5, 7, 8, 9, V, W, X, Y, Z (P68135) Muscle protein complexessearch PF00022: Actinsearch

Chain ID Cellular component (GO) Molecular function (GO) Biological process (GO)
A, D, G, J (P13538) myosin complexsearch motor activitysearch ATP bindingsearch
B, E, H, K (P02609) calcium ion bindingsearch
C, F, I, L (P02605) myosin complexsearch calcium ion bindingsearch
0, 1, 2, 3, 4, 5, 7, 8, 9, V, W, X, Y, Z (P68135) cytoplasmsearch actin filamentsearch cytoskeletonsearch striated muscle thin filamentsearch stress fibersearch ATP bindingsearch protein bindingsearch nucleotide bindingsearch identical protein bindingsearch calcium-dependent protein bindingsearch skeletal muscle thin filament assemblysearch skeletal muscle fiber developmentsearch

Chain InterPro annotation
A, D, G, J IQ motif, EF-hand binding sitesearch Myosin head, motor domainsearch Myosin, N-terminal, SH3-likesearch Myosin-like IQ motif-containing domainsearch P-loop containing nucleoside triphosphate hydrolasesearch
B, E, H, K EF-hand domainsearch EF-hand domain pairsearch EF-Hand 1, calcium-binding sitesearch
C, F, I, L EF-hand domainsearch EF-hand domain pairsearch
0, 1, 2, 3, 4, 5, 7, 8, 9, V, W, X, Y, Z Actin-related proteinsearch Actin, conserved sitesearch Actin/actin-like conserved sitesearch