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Molecule of the Month illustrations are available under a CC-BY-4.0 license. Attribution should be given to David S. Goodsell and the RCSB PDB. Molecule of the Month articles are copyrighted by the RCSB PDB and the authors of the article. Text can only be reprinted with permission, with attribution, and without the right to manipulate or change its content. To request permission, please contact info@rcsb.org.

RCSB PDB Molecule of the Month articles may be referenced using a Digital Object Identifier (DOI) with format: 10.2210/rcsb_pdb/mom_YYYY_MM, where YYYY should be replaced with the year, and MM with the number of the month (one or two digits).

DateTitleImageImage Name
2021
JulyDesigned Proteins and Citizen Science259-Designed_Proteins_and_Citizen_Science-FoldiProteins.tif
259-Designed_Proteins_and_Citizen_Science-3i1c_3u0s.tif
JuneGlucocorticoid Receptor and Dexamethasone258-Glucocorticoid_Receptor_and_Dexamethasone-1m2z_1glu.tif
258-Glucocorticoid_Receptor_and_Dexamethasone-6xk0.tif
MayFetal Hemoglobin257-Fetal_Hemoglobin-1fdh_4hhb.tif
257-Fetal_Hemoglobin-6ki6_twoviews.tif
AprilSARS-CoV-2 Spike and Antibodies256-SARSCoV2_Spike_and_Antibodies-Spike_Antibodies.tif
256-SARSCoV2_Spike_and_Antibodies-nanobodies2.tif
MarchCisplatin and DNA255-Cisplatin_and_DNA-Fig1.tif
255-Cisplatin_and_DNA-Fig2.tif
255-Cisplatin_and_DNA-Fig3.tif
FebruaryCellulose Synthase254-Cellulose_Synthase-6wlb_composite.tif
254-Cellulose_Synthase-2021PlantCellWall_crop.tif
254-Cellulose_Synthase-2icy_3s27.tif
JanuaryExpressome253-Expressome-6x9q_composite.tif
253-Expressome-6ztm_6x9q.tif
2020
DecemberHepatitis C Virus Protease/Helicase252-Hepatitis_C_Virus_ProteaseHelicase-1cu1_label.tif
252-Hepatitis_C_Virus_ProteaseHelicase-4wtg_1zh1_1r7g_2.tif
NovemberAdenylyl Cyclase251-Adenylyl_Cyclase-6r3q_full.tif
251-Adenylyl_Cyclase-5u6p.tif
OctoberCapsaicin Receptor TRPV1250-Capsaicin_Receptor_TRPV1-5is0_composite.tif
250-Capsaicin_Receptor_TRPV1-6dmw.tif
SeptemberSARS-CoV-2 RNA-dependent RNA Polymerase249-SARSCoV2_RNAdependent_RNA_Polymerase-6yyt_label.tif
249-SARSCoV2_RNAdependent_RNA_Polymerase-2ahm_2.tif
AugustPhytosulfokine Receptor248-Phytosulfokine_Receptor-4z64_Figure.tif
248-Phytosulfokine_Receptor-4mn8_4lsx.tif
JulyMyelin-associated Glycoprotein5lf5_composite3.tif
247-Myelinassociated_Glycoprotein-Myelin.tif
247-Myelinassociated_Glycoprotein-1pkq_1bx2.tif
JuneSARS-CoV-2 Spike246-SARSCoV2_Spike-6crz_6vxx3.tif
246-Coronavirus_Spike-6vsb_6m17_2.tif
MaySpliceosomes245-Spliceosomes-3jb9.tif
245-Spliceosomes-6n7p.tif
245-Spliceosomes-1mh1_1ryf.tif
AprilPhotosynthetic Supercomplexes244-Photosynthetic_Supercomplexes-5xnl.tif
244-Photosynthetic_Supercomplexes-6kad_6kac.tif
244-Photosynthetic_Supercomplexes-5zji_6nwa.tif
MarchVoltage-gated Sodium Channels242-Voltagegated_Sodium_Channels-6j8j_twoview.tif
242-Voltagegated_Sodium_Channels-6a95_green.tif
FebruaryCoronavirus Proteases243-Coronavirus_Proteases-6lu7.tif
243-Coronavirus_Proteases-1q2w_4ow0.tif
JanuaryTwenty Years of Molecules241-Twenty_Years_of_Molecules-6j4y.tif
241-Twenty_Years_of_Molecules-records.tif
241-Twenty_Years_of_Molecules-2or1.tif
241-Twenty_Years_of_Molecules-6mam.tif
241-Twenty_Years_of_Molecules-6by7.tif
241-Twenty_Years_of_Molecules-CyclicBeauty.tif
2019
DecemberHypoxia-Inducible Factors240-HypoxiaInducible_Factors-1lqb_composite.tif
240-HypoxiaInducible_Factors-4zpr.tif
NovemberPhospholipase A2239-Phospholipase_A2-1bp2.tif
239-Phospholipase_A2-1bp2_1cjy.tif
OctoberRibonucleotide Reductase238-Ribonucleotide_Reductase-1mrr_3r1r.tif
238-Ribonucleotide_Reductase-3uus.tif
SeptemberNanodiscs and HDL237-Nanodiscs_and_HDL-4v6m.tif
237-Nanodiscs_and_HDL-6clz.tif
AugustCyclin and Cyclin-dependent Kinase236-Cyclin_and_Cyclindependent_Kinase-1fin.tif
236-Cyclin_and_Cyclindependent_Kinase-CDKinhibitors.tif
JulyAMPA Receptor235-AMPA_Receptor-3kg2_composite.tif
235-AMPA_Receptor-iGluR.tif
JuneMDM2 and Cancer234-MDM2_and_Cancer-MDM2_painting.tif
234-MDM2_and_Cancer-MDM2.tif
MayS-Nitrosylated Hemoglobin233-SNitrosylated_Hemoglobin-1buw.tif
233-SNitrosylated_Hemoglobin-2ifq.tif
AprilProteins and Biominerals231-Proteins_and_Biominerals-1q8h_4uxm.tif
231-Proteins_and_Biominerals-4jj0.tif
MarchMeasles Virus Proteins231-Measles_Virus_Proteins-measles.tif
232-Measles_Virus_Proteins-4uft.tif
FebruaryInitiation Factor eIF4E230-Initiation_Factor_eIF4E-1ap8_1rf8.tif
230-Initiation_Factor_eIF4E-complexes.tif
JanuaryFluorescent RNA Aptamers229-Fluorescent_RNA_AptamersSpinach_fluorescent_aptamer_with_RNA_in_light_orange_and_fluorophore_in_green-4kzd.tif
229-Fluorescent_RNA_AptamersSpinach_fluorescent_aptamer_with_RNA_in_light_orange_and_fluorophore_in_green-fluorescent_aptamers.tif
2018
DecemberDirected Evolution of Enzymes228-Directed_Evolution_of_Enzymes-5ucw.tif
228-Directed_Evolution_of_Enzymes-3wwj.tif
228-Directed_Evolution_of_Enzymes-1wdw_6am8.tif
NovemberTelomerase227-Telomerase-6d6v.tif
227-Telomerase-143d.tif
OctoberAminoglycoside Antibiotics and Resistance226-Aminoglycoside_Antibiotics_and_Resistance-1fjg.tif
226-Aminoglycoside_Antibiotics_and_Resistance-4ox9.tif
SeptemberPhytase225-Phytase-1dkq_phyticacid.tif
225-Phytase-phytases.tif
AugustLegumain224-Legumain-4awb.tif
224-Legumain-legumains.tif
JulyPiezo1 Mechanosensitive Channel223-Piezo1_Mechanosensitive_Channel-6b3r.tif
223-Piezo1_Mechanosensitive_Channel-3um7_5vkq.tif
JuneProteins and Nanoparticles221-Proteins_and_Nanoparticles-5et3_motm.tif
221-Proteins_and_Nanoparticles-4prq.tif
221-Proteins_and_Nanoparticles-5oeh_3nkx.tif
MayHuman Papillomavirus and Vaccines222-Human_Papillomavirus_and_Vaccines-3j6r-6bt3.tif
222-Human_Papillomavirus_and_Vaccines-4xr8.tif
AprilDehalogenases220-Dehalogenases-4ur0.tif
220-Dehalogenases-dehalogenases.tif
MarchVacuolar ATPase219-Vacuolar_ATPase-5vox.tif
219-Vacuolar_ATPase-ATPases.tif
FebruaryEPSP Synthase and Weedkillers218-EPSP_Synthase_and_Weedkillers-2gg4_2gga.tif
218-EPSP_Synthase_and_Weedkillers-2p1n.tif
JanuaryOpioid Receptors217-Opioid_Receptors-4dkl.tif
217-Opioid_Receptors-3fvy_5ee3.tif
2017
DecemberBiodegradable Plastic216-Biodegradable_Plastic-5t6o_composite.tif
216-Biodegradable_Plastic-4o9c_3vzs.tif
NovemberAspartate Transcarbamoylase215-Aspartate_Transcarbamoylase-5at1.tif
215-Aspartate_Transcarbamoylase-CAD.tif
OctoberChimeric Antigen Receptors214-Chimeric_Antigen_Receptors-CAR.tif
214-Chimeric_Antigen_Receptors-CART_2017.tif
SeptemberSirtuins213-Sirtuins-4iao.tif
213-Sirtuins-5btr_5mf6.tif
AugustGlutathione Transferases212-Glutathione_Transferases-3gss.tif
212-Glutathione_Transferases-3zml_3zmk.tif
JulyPilus Machine211-Pilus_Machine-3jc8.tif
211-Pilus_Machine-3jc8_action.tif
JuneAdenine Riboswitch in Action210-Adenine_Riboswitch_in_Action-5e54_5swe.tif
210-Adenine_Riboswitch_in_Action-5e54_5swe_lattice.tif
MayTissue Transglutaminase and Celiac Disease209-Tissue_Transglutaminase_and_Celiac_Disease-2q3z_3ly6.tif
209-Tissue_Transglutaminase_and_Celiac_Disease-1s9v_5ks9.tif
AprilGlucose Transporters208-Glucose_Transporters-4pyp_4zwc.tif
208-Glucose_Transporters-1pv6_1pw4.tif
MarchPhotoactive Yellow Protein207-Photoactive_Yellow_Protein-2pyp.tif
207-Photoactive_Yellow_Protein-2zoi.tif
FebruaryGlobin Evolution206-Globin_Evolution-Myoglobins.tif
206-Globin_Evolution-Globins.tif
206-Globin_Evolution-3vrf.tif
JanuaryNuclear Pore Complex205-Nuclear_Pore_Complex-5a9q_5ijn.tif
205-Nuclear_Pore_Complex-5dis.tif
2016
DecemberPD-1 (Programmed Cell Death Protein 1)203-PD1_Programmed_Cell_Death_Protein_1-3bik_3bp5.tif
203-PD1_Programmed_Cell_Death_Protein_1-5dk3_5jxe.tif
NovemberAminopeptidase 1 and Autophagy203-Aminopeptidase_1_and_Autophagy-Selective_Autophagy_2016.tif
204-Aminopeptidase_1_and_Autophagy-5jh9_4r8f.tif
OctoberDipeptidyl Peptidase 4202-Dipeptidyl_Peptidase4-1nu8.tif
202-Dipeptidyl_Peptidase4-Substrates2.tif
SeptemberIsoprene Synthase201-Isoprene_Synthase-3n0g.tif
201-Isoprene_Synthase-1i9a_1p0n.tif
AugustQuasisymmetry in Icosahedral Viruses200-Quasisymmetry_in_Icosahedral_Viruses-Quasisymmetry.tif
200-Quasisymmetry_in_Icosahedral_Viruses-1sva_2btv.tif
JulyMonellin199-Monellin-SuperSweet.tif
199-Monellin-SweetReceptor.tif
JuneBeta-galactosidase198-betaGalactosidase-1jz8.tif
198-Betagalactosidase-bgal_2015_Multicolor_highRes_Subramaniam.tif
MayZika Virus197-Zika_Virus-5ire_glyc.tif
197-Zika_Virus-ZikaVirus.tif
AprilLead Poisoning196-Lead_Poisoning-1qnv.tif
196-Lead_Poisoning-lead.tif
MarchRAF Protein Kinases195-Raf_Protein_Kinases-raf.tif
195-Raf_Protein_Kinases-1uwj.tif
FebruaryDesigner Insulins194-Designer_Insulins-1trz.tif
194-Designer_Insulins-4ajx.tif
JanuarySiderocalin193-Siderocalin-3cmp_composite.tif
193-Siderocalin-1lfg_3eyc.tif
2015
DecemberVancomycin192-Vancomycin-1fvm.tif
192-Vancomycin-3se7.tif
NovemberGlutamate-gated Chloride Receptors191-GlutamateGatedChlorideReceptors_3rif.tif
191-GlutamateGatedChlorideReceptors_4hfe_3jad.tif
OctoberTwo-component Systems190-TwoComponentSystems_2c2a_3by8.tif
190-TwoComponentSystems_1kgs_1gxp_1zes.tif
SeptemberAmyloids189-Amyloids_2m4j.tif
189-Amyloids_amyloids.tif
AugustTetrahydrobiopterin Biosynthesis188-TetrahydrobiopterinBiosynthesis_1gtp_1gtq_1sep.tif
188-TetrahydrobiopterinBiosynthesis_1dcp_1dhr.tif
JulyNew Delhi Metallo-Beta-Lactamase187-New_Delhi_MetalloBetaLactamase-4eyl.tif
187-New_Delhi_MetalloBetaLactamase-3rxw.tif
JuneReceptor for Advanced Glycation End Products186-ReceptorForAdvancedGlycationEndProducts_4lp5_figure.tif
186-ReceptorForAdvancedGlycationEndProducts_4lp5_figure.tif
186-ReceptorForAdvancedGlycationEndProducts_3b75_figure.tif
MayTitin185-Titin_sarcomere_titin.tif
185-Titin_sarcomere_titin.tif
185-Titin_1ya5.tif
AprilGlucagon184-Glucagon_glucagonreceptor.tif
184-Glucagon_glucagonreceptor.tif
184-Glucagon_proglucagon.tif
MarchPhototropin183-Phototropin_phototropin.tif
183-Phototropin_Vivid.tif
FebruaryInsulin Receptor182-InsulinReceptor_insulinreceptor.tif
182-InsulinReceptor_insulinreceptor.tif
182-InsulinReceptor_3w14_composite.tif
JanuaryCascade and CRISPR181-CascadeAndCRISPR_1vy8.tif
181-CascadeAndCRISPR_CasProteins.tif
181-CascadeAndCRISPR_4un3.tif
2014
DecemberTAL Effectors180-TALEffectors_3ugm.tif
180-TALEffectors_TALEN.tif
NovemberMethyl-coenzyme M Reductase179-MethylCoenzymeMReductase_1mro.tif
179-MethylCoenzymeMReductase_1mro_tools.tif
OctoberEbola Virus Proteins178-Ebola_Virus_Proteins-EbolaProteins2018.tif
178-Ebola_Virus_Proteins-5z9w.tif
178-EbolaVirusProteins_VP40.tif
SeptemberApoptosomes177-Apoptosomes_human_apoptosome.tif
177-Apoptosomes_apoptosomes.tif
AugustDynein176-Dynein_3vkh-label.tif
176-Dynein_3j1t.tif
JulyMicrotubules175-Microtubules_3j2u.tif
175-Microtubules_3j2u.tif
175-Microtubules_1ffx.tif
JuneGFP-like Proteins174-GFPLikeProteins_1g7k.tif
174-GFPLikeProteins_GFP-like_Proteins.tif
MayAquaporin173-Aquaporin_1fqy.tif
173-Aquaporin_1fx8_pmv.tif
AprilRecA and Rad51172-RecAAndRad51_recA_filament.tif
172-RecAAndRad51_1w36.tif
MarchNeurotransmitter Transporters171-NeurotransmitterTransporters_4m48.tif
171-NeurotransmitterTransporters_2nwx.tif
FebruaryBroadly Neutralizing Antibodies170-BroadlyNeutralizingAntibodies_4nco_bnAb.tif
170-BroadlyNeutralizingAntibodies_HA_bnAb.tif
JanuaryHIV Envelope Glycoprotein169-HIVEnvelopeGlycoprotein_4nco_composite.tif
169-HIVEnvelopeGlycoprotein_4nco_composite.tif
169-HIVEnvelopeGlycoprotein_1gc1_composite.tif
2013
DecemberDNA Helicase168-DNAHelicase_4esv.tif
168-DNAHelicase_4esv.tif
168-DNAHelicase_3r8f_helix.tif
NovemberSNARE Proteins167-SNAREProteins_1sfc_1br0.tif
167-SNAREProteins_1nsf.tif
OctoberProteasome166-Proteasome_4b4t_dimer.tif
166-Proteasome_4b4t_dimer.tif
166-Proteasome_1fnt_3l5q.tif
SeptemberDesigned Protein Cages165-DesignedProteinCages_3vdx_4egg.tif
165-DesignedProteinCages_3vdx_4egg.tif
165-DesignedProteinCages_3tom.tif
AugustSerotonin Receptor164-SerotoninReceptor_4iar.tif
164-SerotoninReceptor_3gwv.tif
JulyHIV Capsid163-HIVCapsid_capsid_composite.tif
163-HIVCapsid_2lm3_1ak4_1e6j.tif
JuneDermcidin162-Dermcidin_2ymk_twoviews.tif
162-Dermcidin_2ymk_twoviews.tif
162-Dermcidin_1dfn_2k6o.tif
MayRicin161-Ricin_2aai.tif
161-Ricin_3u5d_3u5e.tif
161-Ricin_immunotoxin.tif
AprilActinomycin160-Actinomycin_173d_composite.tif
160-Actinomycin_173d_composite.tif
160-Actinomycin_1k4t.tif
MarchErythrocruorin159-Erythrocruorin_2gtl.tif
159-Erythrocruorin_hemoglobins.tif
FebruaryProton-Gated Urea Channel158-ProtonGatedUreaChannel_3ux4.tif
158-ProtonGatedUreaChannel_3ux4.tif
158-ProtonGatedUreaChannel_1e9y.tif
JanuaryTransfer-Messenger RNA157-TransferMessengerRNA_3iyr_composite.tif
157-TransferMessengerRNA_3j18_3j19_composite.tif
2012
DecemberABO Blood Type Glycosyltransferases156-ABOBloodTypeGlycosyltransferases_3i0g_composite.tif
156-ABOBloodTypeGlycosyltransferases_3i0g_composite.tif
156-ABOBloodTypeGlycosyltransferases_1lu1_2j1u_2obs.tif
NovemberVitamin D Receptor155-VitaminDReceptor_VDRcryo.tif
155-VitaminDReceptor_3c6g_1j78.tif
OctoberCitric Acid Cycle154-CitricAcidCycle_citricacidcycle.tif
154-CitricAcidCycle_1cts.tif
154-CitricAcidCycle_7acn-composite.tif
154-CitricAcidCycle_3blw.tif
154-CitricAcidCycle_OGDH.tif
154-CitricAcidCycle_2fp4_1cqi.tif
154-CitricAcidCycle_1nek-composite.tif
154-CitricAcidCycle_1fuo.tif
154-CitricAcidCycle_1mld_5mdh.tif
SeptemberPyruvate Dehydrogenase Complex153-PyruvateDehydrogenaseComplex_pyruvatedehydrogenase.tif
153-PyruvateDehydrogenaseComplex_pyruvatedehydrogenase.tif
153-PyruvateDehydrogenaseComplex_1w85_composite.tif
AugustcAMP-dependent Protein Kinase (PKA)152-cAMP-dependentProteinKinase_PKA.tif
152-cAMP-dependentProteinKinase_PKA.tif
152-cAMP-dependentProteinKinase_1xp0.tif
JulyHypoxanthine-guanine phosphoribosyltransferase (HGPRT)151-HGPRT_1hmp.tif
151-HGPRT_1cjb.tif
JuneSliding Clamps150-SlidingClamps_3u5z_open.tif
150-SlidingClamps_3u5z_open.tif
150-SlidingClamps_1ul1.tif
MayLeptin149-Leptin_1ax8.tif
149-Leptin_1ax8.tif
149-Leptin_1ron.tif
AprilRas Protein148-RasProtein_5p21.tif
148-RasProtein_5p21.tif
148-RasProtein_Ras.tif
MarchRhodopsin147-Rhodopsin_1f88.tif
147-Rhodopsin_3fsn.tif
FebruaryAminoglycoside Antibiotics146-AminoglycosideAntibiotics_3frh_3pb3.tif
146-AminoglycosideAntibiotics_3frh_3pb3.tif
146-AminoglycosideAntibiotics_aminoglycoside_modifying_enzymes.tif
JanuaryMessenger RNA Capping145-MessengerRNACapping_3kyh_1ri1.tif
145-MessengerRNACapping_3kyh_1ri1.tif
145-MessengerRNACapping_2qkm_1st0.tif
2011
DecemberComplex I144-ComplexI_3m9s_3rko.tif
144-ComplexI_1zcd.tif
NovemberToll-like Receptors143-TollLikeReceptors_3fxi_2j67.tif
143-TollLikeReceptors_3fxi_2j67.tif
143-TollLikeReceptors_3ciy.tif
OctoberPDB Pioneers142-PDBPioneers_oxygencarrier.tif
142-PDBPioneers_enzymes.tif
142-PDBPioneers_electroncarrier.tif
SeptemberO-GlcNAc Transferase141-OGlcNAcTransferase_3pe4_1w3b.tif
141-OGlcNAcTransferase_3pe4_1w3b.tif
141-OGlcNAcTransferase_2cbj.tif
AugustRhomboid Protease GlpG140-RhomboidProteaseGlpG_2nrf_membrane.tif
140-RhomboidProteaseGlpG_3b4r_3s0x.tif
JulyDNA Methyltransferases139-DNAMethylases_DNMT.tif
139-DNAMethylases_DNMT.tif
139-DNAMethylases_1mht.tif
JuneGlucansucrase138-Glucansucrase_3aic.tif
138-Glucansucrase_3aie_1smd.tif
MayCytochrome bc1137-Cytochromebc1_3h1j.tif
137-Cytochromebc1_1vf5.tif
AprilNanobodies136-Nanobodies_antibody_nanobody.tif
136-Nanobodies_1mel_complex.tif
MarchIntegrase135-Integrase_3os1_composite.tif
FebruaryIntegrin134-Integrin_1jv2-2k9j-1m8o.tif
134-Integrin_1jv2-2k9j-1m8o.tif
134-Integrin_integrins.tif
JanuaryNitric Oxide Synthase133-NitricOxideSynthase_nNOS.tif
133-NitricOxideSynthase_nNOS.tif
133-NitricOxideSynthase_sGC.tif
2010
DecemberAdenovirus132-Adenovirus_adenovirus.tif
132-Adenovirus_adenovirus.tif
132-Adenovirus_adenovirus_clip.tif
NovemberInteins131-Inteins_1jva.tif
131-Inteins_1jva.tif
131-Inteins_1lws_1am2.tif
OctoberRiboswitches130-Riboswitches_1u8d.tif
130-Riboswitches_riboswitches.tif
SeptemberIsocitrate Dehydrogenase129-IsocitrateDehydrogenase_3blw_9icd.tif
129-IsocitrateDehydrogenase_3blw_9icd.tif
129-IsocitrateDehydrogenase_3lcb.tif
AugustInterferons128-Interferons_interferons.tif
128-Interferons_interferons.tif
128-Interferons_3bes.tif
JulyCrystallins127-Crystallins.tif
JuneEpidermal Growth Factor126-EpidermalGrowthFactor_EGFR.tif
126-EpidermalGrowthFactor_EGFR.tif
126-EpidermalGrowthFactor_1ptu.tif
MayParvoviruses125-Parvoviruses_1fpv_2cas.tif
125-Parvoviruses_1s58.tif
AprilConcanavalin A and Circular Permutation124-ConcanavalinACircularPermutation_1cvn.tif
124-ConcanavalinACircularPermutation_3cna.tif
MarchP-glycoprotein123-P-glycoprotein_3g61_composite.tif
123-P-glycoprotein_3g61_1bln.tif
FebruaryEnhanceosome122-Enhanceosome_enhanceosome.tif
122-Enhanceosome_CBP.tif
JanuaryRibosome121-70SRibosomes_2wdk_2wdl_front.tif
121-70SRibosomes_initiation.tif
121-70SRibosomes_elongation.tif
121-70SRibosomes_termination.tif
121-70SRibosomes_antibiotics.tif
2009
DecemberAntifreeze Proteins120-AntifreezeProteins_1kdf.tif
120-AntifreezeProteins_antifreeze.tif
NovemberDesigned DNA Crystal119-DesignedDNACrystal_3gbi_composite.tif
119-DesignedDNACrystal_309d.tif
OctoberSodium-Potassium Pump118-SodiumPotassiumPump_2zxe_composite.tif
118-SodiumPotassiumPump_2zxe_1su4_3b8c.tif
SeptemberXanthine Oxidoreductase117-XanthineOxidoreductase_1fo4_composite.tif
117-XanthineOxidoreductase_1r4u_composite.tif
AugustSulfotransferases116-Sulfotransferases_sulfotransferases.tif
116-Sulfotransferases_sulfotransferases.tif
116-Sulfotransferases_APSenzymes.tif
JulyBeta-secretase115-betaSecretase_1sgz_1py1.tif
115-betaSecretase_1py1.tif
JuneVaults114-Vaults_vaults.tif
114-Vaults_containers.tif
MayInfluenza Neuraminidase113-Influenza_Neuraminidase-neuraminidases.tif
113-Influenza_Neuraminidase-1nca.tif
AprilOct and Sox Transcription Factors112-TranscriptionFactors_1gt0_composite.tif
112-TranscriptionFactors_1nkp_2ebt.tif
MarchHydrogenase111-Hydrogenases_composite.tif
111-Hydrogenases_composite.tif
111-Hydrogenases_1e08.tif
FebruaryAuxin and TIR1 Ubiquitin Ligase110-AuxinandTIR1UbiquitinLigase_2p1p.tif
110-AuxinandTIR1UbiquitinLigase_1xmb.tif
JanuaryTobacco Mosaic Virus109-TobaccoMosaicVirus_2tmv_composite.tif
109-TobaccoMosaicVirus_1ei7.tif
2008
DecemberHsp90108-Hsp90-2cg9_composite.tif
108-Hsp90-2cg9_2ioq.tif
NovemberMechanosensitive Channels107-MechanosensitiveChannels-2oau_composite.tif
107-MechanosensitiveChannels-2oar_composite.tif
OctoberPoly(A) Polymerase106-Poly-A-Polymerase-1fa0.tif
106-Poly-A-Polymerase-1cvj.tif
SeptemberRibonuclease A105-Ribonuclease-A-5rsa.tif
105-Ribonuclease-A-2fk6_2ez6.tif
AugustSelenocysteine Synthase104-SelenocysteineSynthase-3bc8_2yye.tif
104-SelenocysteineSynthase-1wb1_2uwm.tif
JulyDengue Virus103-DengueVirus-1k4r.tif
103-DengueVirus-nonstructuralproteins.tif
JuneLactate Dehydrogenase102-LactateDehydrogenase-3ldh.tif
102-LactateDehydrogenase-1lth.tif
MayPrions101-Prions-PrP.tif
101-Prions-2rnm.tif
AprilAdrenergic Receptors100-AdrenergicReceptors-2rh1.tif
100-AdrenergicReceptors-backbone.tif
MarchCadherin99-Cadherin-1l3w-1i7x.tif
99-Cadherin-1l3w-1q5a-1q5c.tif
FebruarySmall Interfering RNA (siRNA)98-SmallInterferingRNA-siRNA.tif
98-SmallInterferingRNA-1r9f.tif
JanuaryCircadian Clock Proteins97-CircadianClock Proteins-Kai-proteins.tif
97-CircadianClockProteins-1cjw.tif
2007
DecemberOxidosqualene Cyclase96-OxidosqualeneCyclase-1w6k.tif
96-OxidosqualeneCyclase-1hwk.tif
NovemberMultidrug Resistance Transporters95-MultidrugResistanceTransporter-2onj.tif
95-MultridrigResistanceTransporter-multidrugtransporters.tif
OctoberSuperoxide Dismutase94-SuperoxideDismutase-2sod.tif
94-SuperoxideDismutase-SODs.tif
SeptemberCitrate Synthase93-CitrateSynthase-1cts-2cts.tif
93-CitrateSynthase-1nxg.tif
AugustAnabolic Steroids92-AnabolicSteroids-1d2s.tif
92-AnabolicSteroids-1xf0.tif
JulyThymine Dimers91-ThymineDimers-1n4e.tif
91-ThymineDimers-1vas-1tez.tif
JuneFatty Acid Synthase90-FattyAcidSynthase-fas.tif
90-FattyAcidSynthase-fasII-composite.tif
MayAconitase and Iron Regulatory Protein 189-AconitaseandIronRegulatoryProtein1-2b3y-2ipy.tif
89-AconitaseandIronRegulatoryProtein1-moonlighting.tif
AprilClathrin88-Clathrin-1xi4-composite.tif
88-Clathrin-ap2-composite.tif
MarchZinc Fingers87-ZincFingers-1tf6-1un6.tif
87-ZincFingers-zincfingers.tif
FebruaryExosomes86-Exosomes-2nn6.tif
86-Exosomes-2a1s-1st0.tif
JanuaryImportins85-Importins-1qgk-composite.tif
85-Importins-2bku-1wa5.tif
2006
DecemberTransposase84-Transposase-1muh-tube.tif
84-Transposase-1z1g-composite.tif
NovemberFibrin83-Fibrin-1m1j-composite.tif
83-Fibrin-1m1j-1fzc.tif
OctoberCytochrome p45082-Cytochromep450-1w0e-2j0d.tif
82-Cytochromep450-1ea1-1e6e.tif
SeptemberElongation Factors81-ElongationFactors-1ttt.tif
81-ElongationFactors-1efu.tif
81-ElongationFactors-1dar-1ttt.tif
AugustAAA+ Proteases80-AAA+Proteases-1yyf.tif
80-AAA+Proteases-AAAproteins.tif
JulyAmyloid-beta Precursor Protein79-Amyloid-betaPrecursorProtein-app-composite.tif
79-Amyloid-betaPrecursorProtein-1fkn.tif
JuneLuciferase78-Luciferase-2d1s-composite.tif
78-Luciferase-1brl-1vpr.tif
MayGlucose Oxidase77-GlucoseOxidase-gpe-composite.tif
77-GlucoseOxidase-1gco-1cq1.tif
AprilHemagglutinin76-Hemagglutinin-1ruz-membrane.tif
76-Hemagglutinin-HA-action.tif
MarchTissue Factor75-TissueFactor-2hft-composite.tif
75-TissueFactor-1dan-composite.tif
FebruaryAlpha-amylase74-alpha-Amylase-1ppi.tif
74-alpha-Amylase-industrial.tif
JanuaryTopoisomerases73-Topoisomerases-1a36-composite.tif
73-Topoisomerases-1bgw-1ei1.tif
2005
DecemberATP Synthase72-ATPSynthase-ATPsynthase.tif
72-ATP_Synthase-6b8h.tif
NovemberAcetylcholine Receptor71-AcetylcholineReceptor-2bg9-composite.tif
71-AcetycholineReceptor-1yi5.tif
OctoberDesigner Proteins70-DesignerProteins-1qys-composite.tif
70-DesignerProteins-bundles.tif
SeptemberCholera Toxin69-CholeraToxin-1xtc-composite.tif
69-CholeraToxin-toxins.tif
AugustNeurotrophins68-Neurotrophins-1bet.tif
68-Neurotrophins-receptors.tif
JulyTATA-Binding Protein67-TATA-BindingProtein-1cdw.tif
67-TATA-BindingProtein-TF.tif
JuneCarotenoid Oxygenase66-CarotenoidOxygenase-2biw-composite.tif
66-CartenoidOxygenase-1jb0-1f88.tif
MaySelf-splicing RNA65-Self-SplicingRNA-1u6b.tif
65-Self-SplicingRNA-1mme.tif
AprilKinesin64-Kinesin-3kin-composite.tif
64-Kinesin-3kin-2ncd.tif
MarchT-Cell Receptor63-T-CellReceptor-1tcr.tif
63-T-CellReceptor-MHC.tif
FebruaryMajor Histocompatibility Complex62-MajorHistocompatibilityComplex-1hsa.tif
62-MajorHistocompatibilityComplex-1hsa-1dlh.tif
62-MajorHistocompatibilityComplex-IgDomain1.tif
62-MajorHistocompatibilityComplex-IgDomain2.tif
JanuaryPhenylalanine Hydroxylase61-PhenylalanineHydroxylase-2pah-1phz.tif
61-PhenylalanineHydroxylase-hydroxylases.tif
2004
DecemberUbiquitin60-Ubiquitin-ubiquitin.tif
60-Ubiquitin-enzymes.tif
60-Ubiquitin-1fnt.tif
NovemberPhotosystem II59-PhotosystemII-1s5l-chain.tif
59-PhotosystemII-antenna.tif
OctoberG Proteins58-G_Proteins-1gg2.tif
58-G_Proteins-G-Protein.tif
SeptemberCatalase57-Catalase-7cat.tif
57-Catalase-catalases.tif
AugustCaspases56-Caspases-caspases.tif
56-Caspases-CAD.tif
JulyDNA Ligase55-DNALigase-1a0i-1dgs.tif
55-DNALigase-1NHEJ-label.tif
JuneAcetylcholinesterase54-Acetylcholinesterase-1acj-composite.tif
54-Acetylcholinesterase-1b41-1eve.tif
MaySerpins53-Serpins-1psi.tif
53-Serpins-antitrypsin-action.tif
AprilGrowth Hormone52-GrowthHormone-hormones.tif
52-GrowthHormone-3hhr-membrane.tif
MarchCalcium Pump51-TheCalciumPump-1eul-membrane.tif
51-TheCalciumPumps-calcium-pumps.tif
FebruaryGlycolytic Enzymes50-TheGlycolyticEnzymes-glycolysis.tif
50-TheGlycolyticEnzymes-01-1dgk.tif
50-TheGlycolyticEnzymes-01-1hkg-2yhx.tif
50-TheGlycolyticEnzymes-02-1hox.tif
50-TheGlycolyticEnzymes-03-4pfk.tif
50-TheGlycolyticEnzymes-03-4pfk-6pfk.tif
50-TheGlycolyticEnzymes-04-4ald-1j4e.tif
50-TheGlycolyticEnzymes-05-2ypi.tif
50-TheGlycolyticEnzymes-06-3gpd-1nqo.tif
50-TheGlycolyticEnzymes-07-3pgk-1vpe.tif
50-TheGlycolyticEnzymes-08-3pgm-1eqj.tif
50-TheGlycolyticEnzymes-09-2one.tif
50-TheGlycolyticEnzymes-10-1e0u-1a3w.tif
JanuaryCarbonic Anhydrase49-CarbonicAnhydrase-carbonic-anhydrases.tif
49-CarbonicAnhydrase-1cnw.tif
2003
DecemberCatabolite Activator Protein48-CataboliteActivatorProtein-1cgp.tif
48-CataboliteActivatorProtein-cap-polymerase.tif
NovemberSimian Virus 4047-SimianVirus40-1sva-DNA.tif
47-SimianVirus40-T-antigen.tif
OctoberTrypsin46-Trypsin-serine-proteases.tif
46-Trypsin-trypsinogen.tif
SeptemberEstrogen Receptor45-EstrogenReceptor-1hcq-1a52.tif
45-EstrogenReceptor-tamoxifen.tif
AugustCalmodulin44-Calmodulin-3cln.tif
44-Calmodulin-1cfd-1cll.tif
44-Calmodulin-complexes.tif
JulySrc Tyrosine Kinase43-SrcTyosineKinase-2src.tif
43-SrcTyrosineKinase-2src-mechanism.tif
JuneGreen Fluorescent Protein (GFP)42-GreenFlourescentProtein-1gfl-composite.tif
42-GreenFluorescentProtein-1kys-composite.tif
MayHemoglobin41-Hemoglobin-2dhb.tif
41-Hemoglobin-2hbs-fiber.tif
AprilRNA Polymerase40-RNAPolymerase-1i6h-composite.tif
40-RNAPolymerase-1k83.tif
Marchlac Repressor39-LacRepressor-lac.tif
39-LacRepressor-lac-DNAloop.tif
39-lac_Repressor-39-LacRepressor-lac-operon.tif
FebruaryPotassium Channels38-PotassiumChannels-1bl8.tif
38-PotassiumChannels.tif
38-PotassiumChannels-2crd.tif
JanuarySerum Albumin37-SerumAlbumin-1e7i.tif
37-SerumAlbumin-transport.tif
2002
DecemberCytochrome c36-Cytochromec-3cyt-twoviews.tif
36-Cytochromec-electron-transport.tif
NovemberFerritin and Transferrin35-FerritinandTransferrin-ferritin.tif
35-FerritinandTransferrin-transferrin-and-receptor.tif
OctoberDihydrofolate Reductase34-DihydrofolateReductase-7dfr.tif
34-DihydrofolateReductase-3dfr-1dls.tif
SeptemberHIV Reverse Transcriptase33-ReverseTranscriptase-3hvt.tif
33-ReverseTranscriptase-2hmi-label.tif
AugustChaperones32-Chaperones-chaperonin.tif
32-Chaperones-dnaK-prefoldin.tif
Julyp53 Tumor Suppressor31-p53TumorSuppressor-p53-unbound.tif
31-p53TumorSuppressor-p53-bound.tif
JuneGlutamine Synthetase30-GlutamineSynthetase-1fpy-twoviews.tif
30-GlutamineSynthetase-1fpy-ligands.tif
MayPenicillin-binding Proteins29-Penicillin-bindingProteins-3pte.tif
29-Penicillin-bindingProteins-4blm-3pte.tif
AprilAnthrax Toxin28-Anthrax-Toxin.tif
28-AnthraxToxin-1acc-1tzo.tif
MarchBacteriorhodopsin27-Bacteriorhodopsin-1fbb-twoviews.tif
27-Bacteriorhodopsin-two-rhodopsins.tif
FebruaryNitrogenase26-Nitrogenase-1n2c.tif
26-Nitrogenase-1n2c-clusters.tif
JanuaryThrombin25-Thrombin-1ppb-transparent.tif
25-Thrombin-activation.tif
25-Thrombin-hirudin.tif
2001
DecemberGlycogen Phosphorylase24-GlycogenPhosphorylase-6gpb-2views.tif
24-GlycogenPhosphorylase-allostery.tif
NovemberDNA23-DNA-B-DNA.tif
23-DNA-information.tif
23-DNA-ABZ.tif
OctoberPhotosystem I22-PhotosystemI-1jb0.tif
22-PhotosystemI-1jb0-etc.tif
22-PhotosystemI-reaction-centers.tif
22-PhotosystemI-1jb0-antenna.tif
SeptemberAntibodies21-Antibodies-1igt.tif
21-Antibodies-hyhel-overlap.tif
21-Antibodies-1c1e-reaction.tif
AugustPoliovirus and Rhinovirus20-PoliovirusandRhinovirus-picornaviruses.tif
20-PoliovirusandRhinovirus-4rhv-symmetry.tif
20-PoliovirusandRhinovirus-rhinovirus-biology.tif
JulyActin19-Actin-actin18.tif
19-Actin-actin-binding.tif
JuneMyosin18-Myosin-1b7t.tif
18-Myosin-painting.tif
18-Myosin-powerstroke.tif
MayCyclooxygenase17-Cyclooxygenase-1prh-figure.tif
17-Cyclooxygenase-4cox_tunnel.tif
AprilAminoacyl-tRNA Synthetases16-Aminoacyl-tRNASynthetases-1asz.tif
16-Aminoacyl-tRNASynthetases-aaRS.tif
16-Aminoacyl-tRNASynthetases-1ffy.tif
MarchTransfer RNA15-TransferRNA-two-trna.tif
FebruaryInsulin14-Insulin-2kqp_4ins.tif
14-Insulin-4ins_2hiu.tif
JanuaryAlcohol Dehydrogenase13-AlcoholDehydrogenase-1htb.tif
13-AlcoholDehydrogenase-two-adh.tif
2000
DecemberPepsin12-Pepsin-pepsinogen.tif
12-Pepsin-asp-proteases.tif
NovemberRubisco11-Rubisco-1rcx.tif
11-Rubisco-two-forms.tif
OctoberRibosomal Subunits10-Ribosome_figure.tif
10-Ribosome-1ffk_front_figure.tif
10-Ribosome-1fka_front_figure.tif
SeptemberLysozyme9-Lysozyme-2lyz.tif
9-Lysozyme-mutant.tif
AugustRestriction Enzymes8-RestrictionEnzymes-EcorI.tif
8-RestrictionEnzymes-stickyends.tif
JulyNucleosome7-Nucleosome-1aoi.tif
7-Nucleosome.tif
JuneHIV-1 Protease6-HIV-1Protease-3hvp.tif
6-HIV-1Protease-7hvp_activesite.tif
MayCytochrome c Oxidase5-CytochromecOxidase-1oco.tif
5-CytochromecOxidase-cytox_composite.tif
5-CytochromecOxidase-1oco_subunit.tif
AprilCollagen4-Collagen.tif
4-Collagen-painting_large.tif
MarchDNA Polymerase3-DNAPolymerase-1tau.tif
FebruaryBacteriophage phiX1742-BacteriophagephiX174-mature.tif
2-BacteriophagephiX174-1cd3.tif
JanuaryMyoglobin1-Myoglobin-geis-myoglobin.tif
1-Myoglobin-1pmb_1mbn.tif
1-Myoglobin-1mbo_JSmol.tif
About Molecule of the Month
The RCSB PDB Molecule of the Month by David S. Goodsell (The Scripps Research Institute and the RCSB PDB) presents short accounts on selected molecules from the Protein Data Bank. Each installment includes an introduction to the structure and function of the molecule, a discussion of the relevance of the molecule to human health and welfare, and suggestions for how visitors might view these structures and access further details. More