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Found 1 Document (0.482 seconds)

BMRB: 30922

1A0M

NMR structure of EpI-[Y(SO3)15Y]-NH2

Authors

Conibear, A.C., Rosengren, K.J., Lee, H.S.

Assembly

Alpha-conotoxin EpI

Entity

1. Alpha-conotoxin EpI (polymer, Thiol state: all disulfide bound), 17 monomers, 1789.992 Da Detail

GCCSDPRCNM NNPDYCX

Formula weight

1789.992 Da

Entity Connection

disulfide 2 Detail

ID	Type	Value order	Atom ID 1	Atom ID 2
1	disulfide	sing	1:CYS2:SG	1:CYS8:SG
2	disulfide	sing	1:CYS3:SG	1:CYS16:SG

Source organism

Conus episcopatus

Exptl. method

solution NMR

Data set

assigned_chemical_shifts, spectral_peak_list

Chem. Shift Complete

Sequence coverage: 94.1 %, Completeness: 85.4 %, Completeness (bb): 78.3 % Detail

Polymer type: polypeptide(L)

	Total	¹H	¹³C	¹⁵N
All	85.4 % (140 of 164)	96.6 % (84 of 87)	71.2 % (42 of 59)	77.8 % (14 of 18)
Backbone	78.3 % (72 of 92)	93.5 % (29 of 31)	68.1 % (32 of 47)	78.6 % (11 of 14)
Sidechain	95.4 % (83 of 87)	98.2 % (55 of 56)	92.6 % (25 of 27)	75.0 % (3 of 4)
Aromatic	75.0 % (6 of 8)	100.0 % (4 of 4)	50.0 % (2 of 4)

1. entity 1

GCCSDPRCNM NNPDYCX

Show sample condition

Sample

Solvent system 90% H2O/10% D2O, Pressure 1 atm, Temperature 298 K, pH 6.0, Details 1.0 mg/mL Alpha-conotoxin EpI-[Y(SO3)15Y]-NH2, 10 uM DSS, 90% H2O/10% D2O

#	Name	Isotope labeling	Type	Concentration
1	Alpha-conotoxin EpI-[Y(SO3)15Y]-NH2	natural abundance		1.0 mg/mL
2	DSS	natural abundance		10 uM

Release date

2021-06-03

Citation

Posttranslational modifications of α-conotoxins: sulfotyrosine and C-terminal amidation stabilise structures and increase acetylcholine receptor binding
Ho, T., Lee, H.S., Swaminathan, S., Goodwin, L., Rai, N., Ushay, B., Lewis, R.J., Rosengren, K.J., Conibear, A.C.
RSC Med. Chem. (2021), 12, 1574-1584, PubMed 34671739 , DOI 10.1039/d1md00182e , Abstract

Entries sharing articles BMRB: 8 entries Detail

  BMRB: 30913 released on 2021-06-03
    Title NMR structure of EpI[Y(SO)315Y]-OH
  BMRB: 30915 released on 2021-06-03
    Title NMR structure of native PnIA
  BMRB: 30916 released on 2021-06-03
    Title NMR structure of native AnIB
  BMRB: 30917 released on 2021-06-03
    Title NMR structure of AnIB-OH
  BMRB: 30918 released on 2021-06-03
    Title NMR structure of AnIB[Y(SO3)16Y]-NH2
  BMRB: 30919 released on 2021-06-03
    Title NMR structure of AnIB[Y(SO3)16Y]-OH
  BMRB: 30920 released on 2021-06-03
    Title NMR structure of native EpI
  BMRB: 30921 released on 2021-06-03
    Title NMR structure of EpI-OH

Related entities 1. Alpha-conotoxin EpI, : 1 : 5 : 68 entities Detail

Experiments performed 4 experiments Detail

Chemical shift validation 3 contents Detail

Properties

Input source #1: Assigned chemical shifts - Assigned chemical shifts	bmr30922_3.str
Diamagnetism of the molecular assembly	True (excluding Oxygen atoms)
Whether the assembly has a disulfide bond	True (see coordinates for details)
Whether the assembly has a other bond	None
Whether the assembly contains a cyclic polymer	None
Overall data processing status	OK

Disulfide bonds

Ptnr_site_1	Ptnr_site_2	Redox_state_prediction_1	Redox_state_prediction_2	Distance (Å)
1:2:CYS:SG	1:8:CYS:SG	oxidized, CA 58.348, CB 42.489 ppm	oxidized, CA 59.036, CB 41.726 ppm	n/a
1:3:CYS:SG	1:16:CYS:SG	oxidized, CA 56.533, CB 37.263 ppm	oxidized, CA 54.109, CB 39.526 ppm	n/a

Other bonds (neither disulfide, covalent nor hydrogen bonds, e.g. Zinc–sulphur bond)

None

Non-standard residues

Chain_ID	Seq_ID	Comp_ID	Chem_comp_name	Experimental evidences
1	17	NH2	AMINO GROUP	Assigned chemical shifts

Content subtype: bmr30922_3.str

#	Content subtype	Saveframe	Status	# of rows	Experiment type	Sequence coverage (%)
1	Assigned chemical shifts	assigned_chemical_shifts_1	OK	143		100.0 (chain: 1, length: 17)
1	Chemical shift references	chem_shift_reference_1	OK	3		No information

Assigned chemical shifts

Saveframe: assigned_chemical_shifts_1
- Status: OK
- Sequence coverage of experimental data
  - Entity_assembly_ID: 1, Chain length: 17, Sequence coverage: 100.0%
- Total number of assignments
  - ¹H chemical shifts: 87
  - ¹³C chemical shifts: 41
  - ¹⁵N chemical shifts: 15
- Completeness of assignments
  - Entity_assemble_ID: 1
- Redox state of CYS
- Peptide bond of PRO
- Histogram of normalized assigned chemical shifts
- Random coil index and derived parameters (S² and NMR RMSD)
  - Chain_ID: 1

Atom group	# of target shifts	# of assigned shifts	Completeness (%)
¹H chemical shifts	89	85	95.5
¹³C chemical shifts	59	41	69.5
¹⁵N chemical shifts	19	15	78.9

Atom group	# of target shifts	# of assigned shifts	Completeness (%)
¹H chemical shifts	31	29	93.5
¹³C chemical shifts	32	16	50.0
¹⁵N chemical shifts	15	12	80.0

Atom group	# of target shifts	# of assigned shifts	Completeness (%)
¹H chemical shifts	58	56	96.6
¹³C chemical shifts	27	25	92.6
¹⁵N chemical shifts	4	3	75.0

Atom group	# of target shifts	# of assigned shifts	Completeness (%)
¹H chemical shifts	1	1	100.0
¹³C chemical shifts	1	1	100.0

Atom group	# of target shifts	# of assigned shifts	Completeness (%)
¹H chemical shifts	4	4	100.0
¹³C chemical shifts	4	2	50.0

Keywords CC-C-C framework, TOXIN, alpha-conotoxin, alpha4/7 pattern

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Found 1 Document (0.482 seconds)

BMRB: 30922

Sample

Entries sharing articles BMRB: 8 entries Detail

Related entities 1. Alpha-conotoxin EpI, : 1 : 5 : 68 entities Detail

Experiments performed 4 experiments Detail

Instrument

Sample

Instrument

Sample

Instrument

Sample

Instrument

Sample

Chemical shift validation 3 contents Detail