pathway_id,pathway_term,pathway_source,proteins
WP3644,"NAD+ metabolism",WikiPathways,NRK;NMNAT3;NAMPT;SIRT2;NT5E;PARP1
WP3645,"NAD+ biosynthetic pathways",WikiPathways,PARP2;TNKS2;SIRT2;NADSYN1;TNKS;QPRT;NAMPT;PARP1