Search Results for author: Alex Morehead

Found 11 papers, 10 papers with code

Towards Joint Sequence-Structure Generation of Nucleic Acid and Protein Complexes with SE(3)-Discrete Diffusion

1 code implementation21 Dec 2023 Alex Morehead, Jeffrey Ruffolo, Aadyot Bhatnagar, Ali Madani

In this work, we introduce MMDiff, a generative model that jointly designs sequences and structures of nucleic acid and protein complexes, independently or in complex, using joint SE(3)-discrete diffusion noise.

gRNAde: Geometric Deep Learning for 3D RNA inverse design

1 code implementation24 May 2023 Chaitanya K. Joshi, Arian R. Jamasb, Ramon Viñas, Charles Harris, Simon Mathis, Alex Morehead, Pietro Liò

Computational RNA design tasks are often posed as inverse problems, where sequences are designed based on adopting a single desired secondary structure without considering 3D geometry and conformational diversity.

Geometry-Complete Diffusion for 3D Molecule Generation and Optimization

3 code implementations8 Feb 2023 Alex Morehead, Jianlin Cheng

However, such methods are unable to learn important geometric and physical properties of 3D molecules during molecular graph generation, as they adopt molecule-agnostic and non-geometric GNNs as their 3D graph denoising networks, which negatively impacts their ability to effectively scale to datasets of large 3D molecules.

3D Molecule Generation Denoising +5

Geometry-Complete Perceptron Networks for 3D Molecular Graphs

1 code implementation4 Nov 2022 Alex Morehead, Jianlin Cheng

The field of geometric deep learning has had a profound impact on the development of innovative and powerful graph neural network architectures.

Graph Representation Learning Protein Structure Prediction

DRLComplex: Reconstruction of protein quaternary structures using deep reinforcement learning

1 code implementation26 May 2022 Elham Soltanikazemi, Raj S. Roy, Farhan Quadir, Nabin Giri, Alex Morehead, Jianlin Cheng

Utilizing true contacts as input, DRLComplex achieved high average TM-scores of 0. 9895 and 0. 9881 and a low average interface RMSD (I_RMSD) of 0. 2197 and 0. 92 on the two datasets, respectively.

reinforcement-learning Reinforcement Learning (RL) +1

DProQ: A Gated-Graph Transformer for Protein Complex Structure Assessment

1 code implementation21 May 2022 Xiao Chen, Alex Morehead, Jian Liu, Jianlin Cheng

We challenge this significant task with DProQ, which introduces a gated neighborhood-modulating Graph Transformer (GGT) designed to predict the quality of 3D protein complex structures.

Drug Discovery

EGR: Equivariant Graph Refinement and Assessment of 3D Protein Complex Structures

1 code implementation20 May 2022 Alex Morehead, Xiao Chen, Tianqi Wu, Jian Liu, Jianlin Cheng

Protein complexes are macromolecules essential to the functioning and well-being of all living organisms.

Drug Discovery

A Region-Based Deep Learning Approach to Automated Retail Checkout

no code implementations18 Apr 2022 Maged Shoman, Armstrong Aboah, Alex Morehead, Ye Duan, Abdulateef Daud, Yaw Adu-Gyamfi

Automating the product checkout process at conventional retail stores is a task poised to have large impacts on society generally speaking.

object-detection Object Detection

Semi-Supervised Graph Learning Meets Dimensionality Reduction

1 code implementation23 Mar 2022 Alex Morehead, Watchanan Chantapakul, Jianlin Cheng

In this work, we investigate the use of dimensionality reduction techniques such as PCA, t-SNE, and UMAP to see their effect on the performance of graph neural networks (GNNs) designed for semi-supervised propagation of node labels.

Clustering Dimensionality Reduction +2

Geometric Transformers for Protein Interface Contact Prediction

2 code implementations ICLR 2022 Alex Morehead, Chen Chen, Jianlin Cheng

Computational methods for predicting the interface contacts between proteins come highly sought after for drug discovery as they can significantly advance the accuracy of alternative approaches, such as protein-protein docking, protein function analysis tools, and other computational methods for protein bioinformatics.

Drug Discovery Translation

DIPS-Plus: The Enhanced Database of Interacting Protein Structures for Interface Prediction

1 code implementation6 Jun 2021 Alex Morehead, Chen Chen, Ada Sedova, Jianlin Cheng

In this work, we expand on a dataset recently introduced for this task, the Database of Interacting Protein Structures (DIPS), to present DIPS-Plus, an enhanced, feature-rich dataset of 42, 112 complexes for geometric deep learning of protein interfaces.

Drug Discovery Protein Interface Prediction

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