| HCLS1-associated protein X-1 (HS1-associating protein X-1) (HAX-1) (HS1-binding protein 1) (HSP1BP-1) | HAX1 HS1BP1 | O00165 | 4 |
| HEAT repeat-containing protein 1 | HEATR1 | Q5T3Q7 | 4 |
| Heat shock 70kDa protein 1A variant (Fragment) | 0 | Q59EJ3 | 4 |
| Heat shock factor protein 1 (HSF 1) (Heat shock transcription factor 1) (HSTF 1) | HSF1 HSTF1 | Q00613 | 4 |
| Hemoglobin alpha-2 chain variant (Fragment) | HBA2 | E9LUX2 | 4 |
| Hemoglobin subunit delta (Fragment) | HBD | E9PEW8 | 4 |
| Hemoglobin subunit epsilon (Fragment) | HBE1 | A8MUF7 | 4 |
| Heterogeneous nuclear ribonucleoprotein C-like 4 | HNRNPCL4 | P0DMR1 | 4 |
| Heterogeneous nuclear ribonucleoprotein Q (Fragment) | SYNCRIP | F6UXX1 | 4 |
| HIG1 domain family member 2A, mitochondrial (RCF1 homolog B) (RCF1b) | HIGD2A | Q9BW72 | 4 |
| Histone 1, H1e (Histone H1e) | HIST1H1E hCG_1645742 | A3R0T8 | 4 |
| Histone acetyltransferase KAT7 (EC 2.3.1.48) (Histone acetyltransferase binding to ORC1) (Lysine acetyltransferase 7) (MOZ, YBF2/SAS3, SAS2 and TIP60 protein 2) (MYST-2) | KAT7 HBO1 HBOa MYST2 | O95251 | 4 |
| Histone cluster 1, H1e | HIST1H1E | Q4VB24 | 4 |
| Histone deacetylase 4 (HD4) (EC 3.5.1.98) | HDAC4 KIAA0288 | P56524 | 4 |
| Histone deacetylase complex subunit SAP18 (Fragment) | SAP18 | H7BZW6 | 4 |
| Histone H2A | 0 | B2R5B3 | 4 |
| Histone H2A.V (H2A.F/Z) | H2AFV H2AV | A6NFA8 | 4 |
| Histone H4-like protein type G | HIST1H4G H4/L H4FL | Q99525 | 4 |
| HLA class I histocompatibility antigen, A-3 alpha chain | HLA-A | Q5SRN7 | 4 |
| HLA class I histocompatibility antigen, alpha chain E (HLA-E protein) (MHC class I antigen) (MHC class Ib antigen) (Major histocompatibility complex, class I, E) | HLA-E | Q6DU44 | 4 |
| HLA class I histocompatibility antigen, Cw-6 alpha chain | HLA-C | F8W9Z8 | 4 |
| HLA class II histocompatibility antigen, DM alpha chain (MHC class II antigen DMA) (Really interesting new gene 6 protein) | HLA-DMA DMA RING6 | P28067 | 4 |
| Homeobox-containing protein 1 | HMBOX1 | Q6NT76 | 4 |
| Hornerin | HRNR S100A18 | Q5DT20 | 4 |
| HPRT1 protein (Fragment) | HPRT1 | Q6LET3 | 4 |
| HPX protein (Hemopexin) | HPX | Q9BS19 | 4 |
| Hsp89-alpha-delta-N | 0 | O75322 | 4 |
| HSPC027 | 0 | Q9Y6E3 | 4 |
| Hyaluronan synthase 3 (EC 2.4.1.212) (Hyaluronate synthase 3) (Hyaluronic acid synthase 3) (HA synthase 3) | HAS3 | O00219 | 4 |
| Hydroxyacylglutathione hydrolase, mitochondrial (Fragment) | HAGH | H3BPK3 | 4 |
| ICAM2 protein (Intercellular adhesion molecule 2) (Intercellular adhesion molecule 2 variant) (Intercellular adhesion molecule 2, isoform CRA_a) | ICAM2 hCG_41817 | Q6FHE2 | 4 |
| ICOS ligand (Inducible T-cell co-stimulator ligand, isoform CRA_b) | ICOSLG hCG_401312 | K4DIA0 | 4 |
| IgGFc-binding protein | FCGBP | A0A087WXI2 | 4 |
| IGL@ protein | IGL@ | Q6GMX4 | 4 |
| Immunglobulin heavy chain variable region (Fragment) | 0 | Q0ZCH6 | 4 |
| Immunglobulin heavy chain variable region (Fragment) | 0 | Q0ZCJ1 | 4 |
| Immunoglobulin heavy chain variant (Fragment) | 0 | Q9NPP6 | 4 |
| Immunoglobulin heavy variable 1-18 | IGHV1-18 | A0A0C4DH31 | 4 |
| Immunoglobulin heavy variable 1-45 | IGHV1-45 | A0A0A0MS14 | 4 |
| Immunoglobulin heavy variable 3-38 (non-functional) (Fragment) | IGHV3-38 | A0A0C4DH36 | 4 |
| Immunoglobulin heavy variable 3/OR16-10 (non-functional) (Fragment) | IGHV3OR16-10 | A0A075B7F0 | 4 |
| Immunoglobulin J chain (Fragment) | JCHAIN | D6RD17 | 4 |
| Immunoglobulin kappa variable 1-39 (Ig kappa chain V-I region DEE) (Ig kappa chain V-I region Hau) (Ig kappa chain V-I region Mev) (Ig kappa chain V-I region OU) (Ig kappa chain V-I region Walker) | IGKV1-39 | P01600 | 4 |
| Immunoglobulin kappa variable 1-8 | IGKV1-8 | A0A0C4DH67 | 4 |
| Immunoglobulin kappa variable 2-28 | IGKV2-28 | A0A075B6P5 | 4 |
| Immunoglobulin kappa variable 3-20 (Ig kappa chain V-III region B6) (Ig kappa chain V-III region GOL) (Ig kappa chain V-III region HAH) (Ig kappa chain V-III region HIC) (Ig kappa chain V-III region IARC/BL41) (Ig kappa chain V-III region NG9) (Ig kappa chain V-III region SIE) (Ig kappa chain V-III region Ti) (Ig kappa chain V-III region WOL) | IGKV3-20 | A0A0B4J1Z6 | 4 |
| Immunoglobulin lambda variable 3-27 (Ig lambda chain V-IV region Kern) | IGLV3-27 | P01718 | 4 |
| Immunoglobulin lambda variable 9-49 | IGLV9-49 | A0A0B4J1Y8 | 4 |
| Immunoglobulin mu-chain D-J4-region (Fragment) | IGHM | A2N7P4 | 4 |
| Immunoglobulin superfamily member 3 (IgSF3) (Glu-Trp-Ile EWI motif-containing protein 3) (EWI-3) | IGSF3 EWI3 KIAA0466 | A6NJZ6 | 4 |
| Immunoglobulin-like domain-containing receptor 2 | ILDR2 C1orf32 | Q71H61 | 4 |
| Immunogobulin kappa, VJ region (Fragment) | 0 | A2NH53 | 4 |
| Importin subunit alpha | KPNA2 | Q7Z726 | 4 |
| Inactive phospholipase C-like protein 2 (PLC-L(2)) (PLC-L2) (Phospholipase C-L2) (Phospholipase C-epsilon-2) (PLC-epsilon-2) | PLCL2 KIAA1092 PLCE2 | Q9UPR0 | 4 |
| Indian hedgehog protein (IHH) (HHG-2) [Cleaved into: Indian hedgehog protein N-product; Indian hedgehog protein C-product] | IHH | Q14623 | 4 |
| Influenza virus NS1A-binding protein (NS1-BP) (NS1-binding protein) (Aryl hydrocarbon receptor-associated protein 3) | IVNS1ABP ARA3 FLARA3 KIAA0850 NS1 NS1BP HSPC068 | Q9Y6Y0 | 4 |
| Inner nuclear membrane protein Man1 (LEM domain-containing protein 3) | LEMD3 MAN1 | Q9Y2U8 | 4 |
| Inosine-5'-monophosphate dehydrogenase 1 (IMP dehydrogenase 1) (IMPD 1) (IMPDH 1) (EC 1.1.1.205) (IMPDH-I) | IMPDH1 IMPD1 | A4D0Z6 | 4 |
| Insulin-like growth factor 2 mRNA-binding protein 2 | IGF2BP2 | F8W930 | 4 |
| Insulin-like growth factor 2 receptor variant (Fragment) | 0 | Q59EZ3 | 4 |
| Integrator complex subunit 11 (Int11) (EC 3.1.27.-) (Cleavage and polyadenylation-specific factor 3-like protein) (CPSF3-like protein) (Protein related to CPSF subunits of 68 kDa) (RC-68) | INTS11 CPSF3L RC68 | Q5TA45 | 4 |
| Integrin alpha-2 | ITGA2 | E9PB77 | 4 |
| Integrin alpha-8 [Cleaved into: Integrin alpha-8 heavy chain; Integrin alpha-8 light chain] | ITGA8 | P53708 | 4 |
| Integrin beta | ITGB2 hCG_401305 | D3DSM0 | 4 |
| Integrin beta-like protein 1 (Osteoblast-specific cysteine-rich protein) (Ten integrin EGF-like repeat domain-containing protein) | ITGBL1 OSCP TIED | O95965 | 4 |
| Integrin-alpha FG-GAP repeat-containing protein 2 | ITFG2 | Q969R8 | 4 |
| Intelectin-2 (Endothelial lectin HL-2) | ITLN2 UNQ2789/PRO7179 | Q8WWU7 | 4 |
| Inter-alpha (Globulin) inhibitor H4 (Plasma Kallikrein-sensitive glycoprotein) | ITIH4 | B2RMS9 | 4 |
| Interferon-induced transmembrane protein 3 | IFITM3 | E9PS44 | 4 |
| Interferon-induced very large GTPase 1 (Interferon-induced very large GTPase pseudogene 1) | GVINP1 GVIN1 VLIG1 | Q7Z2Y8 | 4 |
| Interferon-stimulated 20 kDa exonuclease-like 2 (EC 3.1.-.-) | ISG20L2 HSD-38 HSD38 | Q9H9L3 | 4 |
| Interleukin-1 receptor type 1 (IL-1R-1) (IL-1RT-1) (IL-1RT1) (CD121 antigen-like family member A) (Interleukin-1 receptor alpha) (IL-1R-alpha) (Interleukin-1 receptor type I) (p80) (CD antigen CD121a) [Cleaved into: Interleukin-1 receptor type 1, membrane form (mIL-1R1) (mIL-1RI); Interleukin-1 receptor type 1, soluble form (sIL-1R1) (sIL-1RI)] | IL1R1 IL1R IL1RA IL1RT1 | P14778 | 4 |
| Interleukin-1 receptor-like 1 (Protein ST2) | IL1RL1 DER4 ST2 T1 | Q01638 | 4 |
| Interleukin-10 (IL-10) (Cytokine synthesis inhibitory factor) (CSIF) | IL10 | P22301 | 4 |
| Interleukin-17 receptor A (IL-17 receptor A) (IL-17RA) (CDw217) (CD antigen CD217) | IL17RA IL17R | Q96F46 | 4 |
| Interleukin-36 gamma (IL-1-related protein 2) (IL-1RP2) (Interleukin-1 epsilon) (IL-1 epsilon) (Interleukin-1 family member 9) (IL-1F9) (Interleukin-1 homolog 1) (IL-1H1) | IL36G IL1E IL1F9 IL1H1 IL1RP2 UNQ2456/PRO5737 | Q9NZH8 | 4 |
| Interleukin-6 (IL-6) (B-cell stimulatory factor 2) (BSF-2) (CTL differentiation factor) (CDF) (Hybridoma growth factor) (Interferon beta-2) (IFN-beta-2) | IL6 IFNB2 | P05231 | 4 |
| Interleukin-7 receptor subunit alpha (IL-7 receptor subunit alpha) (IL-7R subunit alpha) (IL-7R-alpha) (IL-7RA) (CDw127) (CD antigen CD127) | IL7R | P16871 | 4 |
| Intracellular hyaluronan-binding protein 4 (IHABP-4) (IHABP4) (Ki-1/57 intracellular antigen) | HABP4 | Q5JVS0 | 4 |
| Intraflagellar transport protein 122 homolog (WD repeat-containing protein 10) (WD repeat-containing protein 140) | IFT122 SPG WDR10 WDR140 | Q9HBG6 | 4 |
| Intraflagellar transport protein 22 homolog (Rab-like protein 5) | IFT22 RABL5 | Q9H7X7 | 4 |
| IPO5 protein (Fragment) | IPO5 | Q9BVS9 | 4 |
| IQ domain-containing protein G | IQCG | Q9H095 | 4 |
| Islet cell autoantigen 1 (69 kDa islet cell autoantigen) (ICA69) (Islet cell autoantigen p69) (ICAp69) (p69) | ICA1 | Q05084 | 4 |
| Isobutyryl-CoA dehydrogenase, mitochondrial (EC 1.3.99.-) (Activator-recruited cofactor 42 kDa component) (ARC42) (Acyl-CoA dehydrogenase family member 8) (ACAD-8) | ACAD8 ARC42 IBD | Q9UKU7 | 4 |
| IST1 homolog (hIST1) (Putative MAPK-activating protein PM28) | IST1 KIAA0174 | A8KAH5 | 4 |
| Josephin-1 (EC 3.4.19.12) (Josephin domain-containing protein 1) | JOSD1 JSPH1 KIAA0063 | Q15040 | 4 |
| Josephin-2 (EC 3.4.19.12) (Josephin domain-containing protein 2) | JOSD2 SBBI54 | Q8TAC2 | 4 |
| Kallikrein-12 (EC 3.4.21.-) (Kallikrein-like protein 5) (KLK-L5) | KLK12 KLKL5 UNQ669/PRO1303 | Q9UKR0 | 4 |
| Kallikrein-4 (EC 3.4.21.-) (Enamel matrix serine proteinase 1) (Kallikrein-like protein 1) (KLK-L1) (Prostase) (Serine protease 17) | KLK4 EMSP1 PRSS17 PSTS | Q9Y5K2 | 4 |
| Kelch domain-containing protein 8A (Substitute for delta-EGFR expression 1) (S-delta-E1) | KLHDC8A | Q8IYD2 | 4 |
| Kelch repeat and BTB domain-containing protein 3 (BTB and kelch domain-containing protein 3) | KBTBD3 BKLHD3 | Q8NAB2 | 4 |
| Kelch repeat and BTB domain-containing protein 4 (BTB and kelch domain-containing protein 4) | KBTBD4 BKLHD4 | Q9NVX7 | 4 |
| Keratin, type I cytoskeletal 13 | KRT13 | K7ERE3 | 4 |
| Keratin, type I cytoskeletal 17 (Fragment) | KRT17 | K7EPJ9 | 4 |
| Keratin, type I cytoskeletal 26 (Cytokeratin-26) (CK-26) (Keratin-25B) (K25B) (Keratin-26) (K26) (Type I inner root sheath-specific keratin-K25irs2) | KRT26 KRT25B | Q7Z3Y9 | 4 |
| Keratin, type II cytoskeletal 5 (Fragment) | KRT5 | H0YIN9 | 4 |
| Keratin, type II cytoskeletal 8 (Fragment) | KRT8 | F8W1U3 | 4 |
| Keratin-associated protein 3-2 (High sulfur keratin-associated protein 3.2) (Keratin-associated protein 3.2) | KRTAP3-2 KAP3.2 KRTAP3.2 | Q9BYR7 | 4 |
| Keratin-like protein KRT222 (Keratin-222) (Keratin-222 pseudogene) | KRT222 KA21 KRT222P | Q8N1A0 | 4 |