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Beta-helix structure and ice-binding properties of a hyperactive antifreeze protein from an insect
Authors
Graether, S.P., Kuiper, M.J., Gagne, S.M., Walker, V.K., Jia, Z., Sykes, B.D., Davies, P.L.
Assembly
spruce budworm antifreeze protein
Entity
1. spruce budworm antifreeze protein (polymer, Thiol state: free and disulfide bound), 90 monomers, 9060.971 Da Detail

DGSCTNTNSQ LSANSKCEKS TLTNCYVDKS EVYGTTCTGS RFDGVTITTS TSTGSRISGP GCKISTCIIT GGVPAPSAAC KISGCTFSAN


Formula weight
9060.971 Da
Entity Connection
disulfide 4 Detail

IDTypeValue orderAtom ID 1Atom ID 2
1disulfidesing0:CYS4:SG1:CYS17:SG
2disulfidesing0:CYS25:SG1:CYS37:SG
3disulfidesing0:CYS62:SG1:CYS85:SG
4disulfidesing0:CYS67:SG1:CYS80:SG

Source organism
Choristoneura fumiferana
Exptl. method
NMR
Refine. method
simulated annealing
Data set
assigned_chemical_shifts
Chem. Shift Complete
Sequence coverage: 100.0 %, Completeness: 82.3 %, Completeness (bb): 84.3 % Detail

Polymer type: polypeptide(L)

Total1H13C15N
All82.3 % (744 of 904)90.8 % (416 of 458)66.6 % (235 of 353)100.0 % (93 of 93)
Backbone84.3 % (450 of 534)98.4 % (184 of 187)68.8 % (179 of 260)100.0 % (87 of 87)
Sidechain83.1 % (374 of 450)85.6 % (232 of 271)78.6 % (136 of 173)100.0 % (6 of 6)
Aromatic30.6 % (11 of 36)61.1 % (11 of 18) 0.0 % (0 of 18)
Methyl79.5 % (70 of 88)81.8 % (36 of 44)77.3 % (34 of 44)

1. spruce budworm antifreeze protein

DGSCTNTNSQ LSANSKCEKS TLTNCYVDKS EVYGTTCTGS RFDGVTITTS TSTGSRISGP GCKISTCIIT GGVPAPSAAC KISGCTFSAN

Sample

Temperature 303 (±0.1) K, pH 5.5 (±0.25)


#NameIsotope labelingTypeConcentration
1spruce budworm antifreeze protein[U-15N; U-13C]18 mM

Protein Blocks Logo
Calculated from 20 models in PDB: 1EWW, Strand ID: A Detail


Release date
2002-12-26
Citation
Beta-helix structure and ice-binding properties of a hyperactive antifreeze protein from an insect
Graether, S.P., Kuiper, M.J., Gagne, S.M., Walker, V.K., Jia, Z., Sykes, B.D., Davies, P.L.
Nature (2000), 406, 325-328, PubMed 10917537 , DOI 10.1038/35018610 ,
Related entities 1. spruce budworm antifreeze protein, : 1 : 1 : 4 entities Detail
Chemical shift validation 3 contents Detail
Keywords antifreeze, beta-helix, ice