1ZBK

Recognition of specific peptide sequences by signalling protein from sheep mammary gland (SPS-40): Crystal structure of the complex of SPS-40 with a peptide Trp-Pro-Trp at 2.9A resolution

• PDB DOI: https://doi.org/10.2210/pdb1ZBK/pdb

• Classification: SIGNALING PROTEIN
• Organism(s): Ovis aries
• Mutation(s): No 


• Deposited: 2005-04-08 Released: 2005-05-03 
• Deposition Author(s): Srivastava, D.B., Ethayathulla, A.S., Kumar, J., Singh, N., Somvanshi, R.K., Sharma, S., Dey, S., Singh, T.P.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.90 Å
• R-Value Free: 0.235 
• R-Value Work: 0.207 
• R-Value Observed: 0.208 

Literature

Recognition of specific peptide sequences by signalling protein from sheep mammary gland (SPS-40): Crystal structure of the complex of SPS-40 with a peptide Trp-Pro-Trp at 2.9A resolution

Srivastava, D.B., Ethayathulla, A.S., Kumar, J., Singh, N., Somvanshi, R.K., Sharma, S., Dey, S., Singh, T.P.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 41.54 kDa 
• Atom Count: 3,008 
• Modelled Residue Count: 364 
• Deposited Residue Count: 364 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Chitinase-3 like protein 1	A	361	Ovis aries	Mutation(s): 0
UniProt
Find proteins for Q6TMG6 (Ovis aries) Explore Q6TMG6  Go to UniProtKB:  Q6TMG6

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
PEPTIDE TRP-PRO-TRP	B [auth C]	3	N/A	Mutation(s): 0

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAG	C [auth A], D [auth A]	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.90 Å
• R-Value Free: 0.235 
• R-Value Work: 0.207 
• R-Value Observed: 0.208 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 62.64	α = 90
b = 66.45	β = 90
c = 107.44	γ = 90

Software Package:

Software Name	Purpose
HKL-2000	data collection
SCALEPACK	data scaling
AMoRE	phasing
CNS	refinement
HKL-2000	data reduction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2005-05-03 
Deposition Author(s): Srivastava, D.B., Ethayathulla, A.S., Kumar, J., Singh, N., Somvanshi, R.K., Sharma, S., Dey, S., Singh, T.P.

Revision History  

• Version 1.0: 2005-05-03
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Non-polymer description, Version format compliance
• Version 1.3: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Data collection, Derived calculations, Structure summary
• Version 1.4: 2023-08-23
  Changes: Data collection, Database references, Refinement description, Structure summary