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Updated: Jun 5, 2026

Optimizing the Growth of Endothiapepsin Crystals for Serial Crystallography Experiments

Optimizing the Growth of Endothiapepsin Crystals for Serial Crystallography Experiments

Published on: February 4, 2021

Bioengineering single crystal growth.

Ching-Hsuan Wu¹, Alexander Park, Derk Joester

¹Department of Materials Science and Engineering, Northwestern University, 2220 Campus Drive, Evanston, Illinois 60208, United States.

Journal of the American Chemical Society

|January 27, 2011

Summary

This summary is machine-generated.

Researchers engineered biomineralization by patterning sea urchin cells. This controlled the growth and orientation of calcite spicules, offering a new method for advanced biomaterial design.

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Area of Science:

Biomaterials Science
Developmental Biology
Nanotechnology

Background:

Biomineralization produces advanced inorganic/organic nanocomposites with exceptional properties.
Engineering biological systems offers a pathway to design novel materials.
Controlling cellular behavior is key to directing biomineralization processes.

Purpose of the Study:

To investigate the use of patterned substrates for controlling cellular biomineralization.
To demonstrate the directed deposition and orientation of calcite spicules by patterned cells.
To explore lectin-patterned surfaces for guiding cell-mediated material formation.

Main Methods:

Micro-contact printing of lectins (wheat germ agglutinin and concanavalin A) to create cell-adhesive patterns.
Culture of sea urchin embryo primary mesenchyme cells (PMCs) on patterned substrates.
Microscopic analysis of cell attachment, spicule formation, and orientation.

Main Results:

Primary mesenchyme cells successfully attached to specific lectin patterns.
Calcite spicule deposition and elongation were guided by the underlying patterns.
Cooperative cell activity led to aligned, smooth, cylindrical calcite single crystals.
Crystallographic c-direction of calcite aligned parallel to the pattern axis.

Conclusions:

Patterned lectin substrates effectively control cell behavior and biomineralization.
This approach enables precise control over the placement and orientation of biominerals.
Engineering cellular self-assembly provides a route to design advanced, self-organized materials.