{ "info": { "author": "Austin Crinklaw", "author_email": "acrinklaw@lji.org", "bugtrack_url": null, "classifiers": [ "License :: OSI Approved :: GNU Affero General Public License v3 or later (AGPLv3+)", "Operating System :: Unix", "Programming Language :: Python :: 3" ], "description": "[![Build Status](https://travis-ci.com/IEDB/ARC.svg?branch=master)](https://travis-ci.com/IEDB/ARC)\n\n# ARC (Antigen Receptor Classifier)\n### Authors: Austin Crinklaw, Swapnil Mahajan\n\n## Requirements:\n- Linux OS\n- [HMMER3](http://hmmer.org/)\n- NCBI Blast+\n- Python 3+\n - Python packages: Pandas, BioPython\n\n## Installation:\nWe provide a Dockerfile for ease of use.\n\nARC can also be downloaded through PyPI using the following pip command.\n```shell\npip install bio-arc\n```\n\n### Testing Installation:\nA quick check for proper dependencies and successful installation can be performed by navigating to your pip package install directory (which can be located by executing ```pip show bio-arc```) and running the following command:\n```shell\npython3 -m arc_test\n```\nPassing all unit-tests means that your system is configured properly and ready to classify some protein sequences.\n\n## Usage:\n### Input \n- A fasta format file with one or more protein sequences. \n ```\n >1WBZ_A_alpha I H2-Kb\nMVPCTLLLLLAAALAPTQTRAGPHSLRYFVTAVSRPGLGEPRYMEVGYVDDTEFVRFDSDAENPRYEPRARWMEQEGPEYWERETQKAKGNEQSFRVDLRTLLGYYNQSKGGSHTIQVISGCEVGSDGRLLRGYQQYAYDGCDYIALNEDLKTWTAADMAALITKHKWEQAGEAERLRAYLEGTCVEWLRRYLKNGNATLLRTDSPKAHVTHHSRPEDKVTLRCWALGFYPADITLTWQLNGEELIQDMELVETRPAGDGTFQKWASVVVPLGKEQYYTCHVYHQGLPEPLTLRWEPPPSTVSNMATVAVLVVLGAAIVTGAVVAFVMKMRRRNTGGKGGDYALAPGSQTSDLSLPDCKVMVHDPHSLA\n>1WBZ_B_b2m I H2-Kb\nMARSVTLVFLVLVSLTGLYAIQKTPQIQVYSRHPPENGKPNILNCYVTQFHPPHIEIQMLKNGKKIPKVEMSDMSFSKDWSFYILAHTEFTPTETDTYACRVKHASMAEPKTVYWDRDM\n ```\n\n\n\n### Commands\n- Using Fasta file as an input:\n```shell\npython -m ARC classify -i /path/to/input.fasta -o /path/to/output.csv\n```\n### Output \n- Output file has 4 columns in CSV format. \n- First column named 'ID' is the description provoded in the fasta for each sequence. \n- Second column named 'class' is the assigned molecule class for each sequence.\n - e.g. MHC-I, MHC-II, BCR or TCR. \n- The third column named 'chain_type' is the assigned chain type for each sequence.\n - e.g. alpha, beta, heavy, lambda, kappa, scFv, TscFv or construct. These will also be labelled as V for variable domain or C for constant domain.\n- The fourth column named 'calc_mhc_allele' is the MHC allele identified using groove domain similarity to MRO alleles.\n\n| ID\t | class | chain_type | calc_mhc_allele|\n|---------------------------------------- |------- |----------- |---------------|\n| 1WBY_A_alpha I H2-Db |\tMHC-I | alpha V | |\n| 1WBY_B_b2m I H2-Db\t |\t | | |\n| 1HQR_A_alpha II HLA-DRA*01:01/DRB5*01:01|\tMHC-II | alpha C | HLA-DRA*01:01 |\n| 1HQR_B_beta II HLA-DRA*01:01/DRB5*01:01 |\tMHC-II | beta C | HLA-DRB5*01:01 |\n| 2CMR_H_heavy |\tBCR\t | heavy V | |\n| 2CMR_L_light |\tBCR\t | kappa C | |\n| 4RFO_L_light |\tBCR\t | lambda V | |\n| 3UZE_A_heavy |\tBCR\t | scFv | |\n| 1FYT_D_alpha |\tTCR\t | alpha V | |\n| 1FYT_E_beta | TCR\t | beta C | |\n| 3TF7_C_alpha |\tTCR | TscFv | |\n\n## How it works:\n- BCR and TCR chains are identified using HMMs. A given protein sequence is searched against HMMs built using BCR and TCR chain sequences from IMGT. HMMER is used to align an input sequence to the HMMs.\n- MHC class I (alpha1-alpha2 domains) and MHC class I alpha and beta chain HMMs are downloaded from Pfam website. An input protein sequence is searched against these HMMs. A HMMER bit score threshold of 25 was used to identify MHC chain sequences.\n- To identify MHC alleles, groove domains (G-domains) are assigned based on the MRO repository. \n- IgNAR sequences are identified through querying against a custom blast database.\n\n## References:\nSeveral methods for HMMER result parsing were sourced from ANARCI.\n\n[Dunbar J and Deane CM. ANARCI: Antigen receptor numbering and receptor classification. 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