BYU

Abstract by Moriah Longhurst

Personal Infomation


Presenter's Name

Moriah Longhurst

Degree Level

Undergraduate

Co-Authors

Diana Ramirez
Supeshala Sarath Nawarathnage
James Moody

Abstract Infomation


Department

Chemistry and Biochemistry

Faculty Advisor

James Moody

Title

Polymer-Forming Protein Crystallization Chaperones

Abstract

Identifying detailed protein structures is essential to understanding protein function. Protein crystallization, a technique used to determine the 3D structures of proteins by X-ray diffraction, is currently time consuming, expensive, and has a low success rate (10—30%). Attempts to improve this success rate have used crystallization chaperones, which help the target proteins align and crystallize. Our goal is to develop a new technique that will be widely used to crystallize proteins, resulting in easier and more frequent successful crystallization and structure determination.

Nauli et al. fused eleven proteins to a pH sensitive protein polymer called 2TEL, composed of two TELSAM subunits, and all of these proteins crystallized successfully. However, most gave crystals that were too disordered to provide useful data.

We hypothesize that utilizing the TELSAM domains 1TEL, 2TEL, and 3TEL, and 1TEL-VFL could lead to crystallization of challenging proteins. CMG2, our target protein, has proven difficult to crystallize on its own, so successful crystallization using this technique would demonstrate the efficacy of TELSAM polymers as chaperones.