Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 35.61 kDa 
• Atom Count: 2409 
• Residue Count: 274 
• Unique protein chains: 2

1FIW

THREE-DIMENSIONAL STRUCTURE OF BETA-ACROSIN FROM RAM SPERMATOZOA

• DOI: 10.2210/pdb1FIW/pdb

• Classification: HYDROLASE
• Organism(s): Ovis aries
• Mutation(s): No 


• Deposited: 2000-08-07 Released: 2000-11-08 
• Deposition Author(s): Tranter, R., Read, J.A., Jones, R., Brady, R.L.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.242 
• R-Value Work: 0.197 
• R-Value Observed: 0.200 

Literature

Effector sites in the three-dimensional structure of mammalian sperm beta-acrosin.

Tranter, R., Read, J.A., Jones, R., Brady, R.L.

(2000) Structure 8: 1179-1188

• PubMed: 11080640 
• DOI: 10.1016/s0969-2126(00)00523-2
• Primary Citation of Related Structures:  
  1FIZ, 1FIW


• PubMed Abstract: 
  

Proacrosin is a serine protease found specifically within the acrosomal vesicle of all mammalian spermatozoa. During fertilization proacrosin autoactivates to form beta-acrosin, in which there is a "light" chain cross-linked to a "heavy" chain by two disulphide bonds. beta-acrosin is thought to be multifunctional with roles in acrosomal exocytosis, as a receptor for zona pellucida proteins, and as a protease to facilitate penetration of spermatozoa into the egg.

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Related Citations: 

• Three Dimensional Structure of Acrosin from Ram and Boar Spermatozoa
  Tranter, R.
  () To be published --: --

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Organizational Affiliation: 

Department of Biochemistry University of Bristol BS8 1TD, Bristol, United Kingdom.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
BETA-ACROSIN HEAVY CHAIN	A	290	Ovis aries	Mutation(s): 0  Gene Names: ACR EC: 3.4.21.10
Find proteins for Q9GL10 (Ovis aries) Explore Q9GL10  Go to UniProtKB:  Q9GL10

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
BETA-ACROSIN LIGHT CHAIN	L	22	Ovis aries	Mutation(s): 0  Gene Names: ACR EC: 3.4.21.10
Find proteins for Q9GL10 (Ovis aries) Explore Q9GL10  Go to UniProtKB:  Q9GL10

Oligosaccharides

Help

Entity ID: 3
Molecule	Chains	Chain Length	2D Diagram	Glycosylation
alpha-D-mannopyranose-(1-6)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[beta-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose	B	5		N-Glycosylation

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
PBZ	A	P-AMINO BENZAMIDINE C7 H10 N3 WPANETAWYGDRLL-UHFFFAOYSA-O

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.242 
• R-Value Work: 0.197 
• R-Value Observed: 0.200 
• Space Group: P 6₅ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 105.288	α = 90
b = 105.288	β = 90
c = 120.835	γ = 120

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing
REFMAC	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2000-08-07 
• Released Date: 2000-11-08 
Deposition Author(s): Tranter, R., Read, J.A., Jones, R., Brady, R.L.

Revision History 

• Version 1.0: 2000-11-08
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Non-polymer description, Version format compliance
• Version 1.3: 2018-01-31
  Changes: Advisory, Experimental preparation
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Advisory, Atomic model, Data collection, Derived calculations, Structure summary