MP Protein ID  sort | Molecule Page Name  sort | Functional Category  sort | Status  | Publication Date  sort |
| A000001 | Adenylyl cyclase type 5 | Adenylyl cyclase | Assigned | 15 Dec 2003 |
| A000002 | G protein alpha s | G protein, heterotrimeric | Assigned | 26 Jun 2004 |
| A000003 | H-Ras | G protein, monomeric (non-Rab) | Assigned | 29 Apr 2004 |
| A000004 | N-Ras | G protein, monomeric (non-Rab) | Assigned | - |
| A000005 | K-Ras | G protein, monomeric (non-Rab) | Assigned | - |
| A000006 | Glucagon receptor | Receptor, GPCR | Assigned | - |
| A000007 | Adrenergic receptor alpha 1a | Receptor, GPCR | Assigned | 17 Feb 2006 |
| A000008 | p115RhoGEF | Guanine nucleotide exchange factor, Rac/Rho | Assigned | - |
| A000009 | Hdac8 | Hydrolase, esterase | Assigned | - |
| A000010 | Acyl protein thioesterase 1 | Lipid modification, protein | Assigned | 12 Dec 2003 |
| A000011 | G protein alpha z | G protein, heterotrimeric | Assigned | 19 Jun 2009 |
| A000012 | Rem1 | G protein, monomeric (non-Rab) | Assigned | - |
| A000013 | Adenylate cyclase type 10 | Adenylyl cyclase | Unassigned | - |
| A000014 | CAP1 | Cytoskeletal protein | Assigned | 6 Nov 2008 |
| A000015 | Rgs9 | GTPase activating protein, RGS | Assigned | 15 Aug 2007 |
| A000016 | Pde6g | Phosphodiesterase | Assigned | - |
| A000017 | Pak2 | Protein kinase, Ser/Thr (non-receptor) | Assigned | 19 May 2009 |
| A000018 | G protein beta 5 | G protein, heterotrimeric | Assigned | - |
| A000019 | Arrestin 2 | Adaptor/scaffold | Assigned | - |
| A000020 | Rgs13 | GTPase activating protein, RGS | Assigned | 22 Feb 2005 |
| A000021 | Reelin | Secreted protein | Assigned | - |
| A000022 | Opioid receptor kappa 1 | Receptor, GPCR | Assigned | - |
| A000023 | Mkp3 | Protein phosphatase, dual-specificity | Assigned | - |
| A000024 | Nfatc2 | Transcription factor | Unassigned | - |
| A000025 | Mkp1 | Protein phosphatase, dual-specificity | Assigned | - |
| A000026 | Myosin light chain kinase | Protein kinase, Ser/Thr (non-receptor) | Unassigned | - |
| A000027 | Arrestin 3 | Adaptor/scaffold | Assigned | - |
| A000028 | Rgs2 | GTPase activating protein, RGS | Assigned | 17 May 2004 |
| A000029 | G protein alpha 13 | G protein, heterotrimeric | Assigned | 7 Aug 2008 |
| A000030 | Kir3.3 | Channel, potassium | Unassigned | - |
| A000031 | CD40 | Receptor, cytokine | Assigned | 17 Oct 2006 |
| A000032 | Laforin | Protein phosphatase, dual-specificity | Assigned | - |
| A000033 | Lmp1 | Cell surface, misc. | Assigned | - |
| A000034 | Rgs18 | GTPase activating protein, RGS | Assigned | - |
| A000035 | Kshv-Gpcr | Receptor, GPCR | Assigned | - |
| A000036 | Polymeric immunoglobulin receptor | Immunoglobulin superfamily | Assigned | - |
| A000037 | C5a receptor | Receptor, GPCR | Assigned | 10 Jul 2008 |
| A000038 | Btk | Protein kinase, tyrosine (non-receptor) | Unassigned | - |
| A000039 | G protein alpha 12 | G protein, heterotrimeric | Assigned | 25 Mar 2010 |
| A000040 | Syk | Protein kinase, tyrosine (non-receptor) | Assigned | 8 Feb 2007 |
| A000041 | 14-3-3 sigma | Cytosolic, misc. | Assigned | - |
| A000042 | Jik | Protein kinase, Ser/Thr (non-receptor) | Assigned | - |
| A000043 | cGMP-dependent protein kinase, type 1 | Protein kinase, Ser/Thr (non-receptor) | Assigned | - |
| A000044 | cGMP-dependent protein kinase, type 2 | Protein kinase, Ser/Thr (non-receptor) | Assigned | - |
| A000045 | NK1 (substance P) receptor | Receptor, GPCR | Assigned | - |
| A000046 | Phospholipase C epsilon | Phospholipase | Assigned | 3 Mar 2005 |
| A000047 | Angiotensin II receptor 2 | Receptor, GPCR | Assigned | 14 Nov 2005 |
| A000048 | Endoglin | Receptor, misc. | Assigned | 14 Feb 2005 |
| A000049 | Protein kinase A RI alpha subunit | Protein kinase, Ser/Thr (non-receptor) | Unassigned | - |
| A000050 | Protein kinase A RII beta subunit | Protein kinase, Ser/Thr (non-receptor) | Unassigned | - |