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The LDL-receptor (red) is a membrane protein found in almost every human cell. It binds to the apoprotein B100 from LDL-particles and mediates their internalization (endocytosis) in the cell. This occurs in almost all cells but mainly in the liver where it removes about 70 % of LDL from the circulation.
Particles, medical concept
3D cartoon and Gaussian surface models, chain id color scheme, PDB 7t3a, white background
A ball and stick model of Human Insulin. Isolated on black.
Proteasomes are molecular machines for breaking down proteins called proteolysis, only target proteins that have been marked for destruction called ubiquitin to the target protein, 3d rendering
Inside protein molecule
Biological protein and molecule, 3d rendering. 3D illustration.
Chain of Amino Acid. Proteins consist of one or more chains of amino acids called polypeptides
Bacterial multidrug efflux pumps (E-CmeB) expel antibiotics from inside the bacterium (bottom): ciprofloxacin (yellow), chloramphenicol (violet), ampicillin (red).
DNA Helix - 3d rendered image. Genetic research concept. Complex spiral structure illustration. Medical, science, genetic biotechnology, gene cell, chromosome idea. DNA strands on dark background . Science nanotechnology. Hologram view. HUD, FUI, SEM
Spike glycoprotein homotrimer, a main target for neutralization antibody, to bind its receptor, and mediate membrane fusion and virus entry. Surface model, white background.
Cells in the body examined by endoscope
A model of a nucleosome. Isolated on black.
Monosodium glutamate, MSG or sodium glutamate molecules. MSG is used in cooking as a flavor enhancer with an umami taste 3d rendering
Ribonucleic acid strands consisting of nucleotides important for protein bio-synthesis - 3d illustration
Myxoid liposarcoma. Myxoid/round cell liposarcoma, or MRCLS, is one of several types of liposarcoma. Liposarcoma is a rare cancer that grows in the cells that store fat in the body. MRCLS usually grows in the arms and legs. These tumors grow slowly, and they can spread to other parts of the body
After dopamine binding, the dopamine receptor changes his shape and binds the inactive G protein.The G protein expels its GDP molecule replacing it by GTP. and falls into two pieces. The Galpha subunit binds to and activates the enzyme adenylyl cyclase, which produces then cyclic AMP spreading a signal through the cell.
Endosomes - 3d rendered image of Endosomes are membrane-bound organelles. They are parts of endocytic membrane transport pathway. Endomembrane system in cells. Bilayer Lipid Membrane. Abstract medical illustration. Microscopic view. Microbiologic research concept.
3D cartoon and Gaussian surface models, PDB 7las, chain id color scheme, white background
A conceptual image of an abstract network of multi-coloured organic strands arranged in a non regular pattern all connected together in a complex manner. The network is made from smaller multi-coloured squares and polyhedra, in vivid colours against a pastel toned background. Shows background and foreground elements to the structure.
Biological protein and molecule, 3d rendering. 3D illustration.
A ball-and-stick molecular model of the hormone Orexin, also known as Hypocretin. Orexin is involved in the regulation of the sleep/wake cycle and it stimulates apetite, wakefulness and energy expenditure. It has been linked with Alzheimer's disease. Isolated on white.
Science background with molecule or atom
nanotechnology and abstract graphene structures
orange: RNA primer; red: RNA template; light blue: proofreading riboexonuclease; mid blue: helicase; dark blue: RNA directed RNA polymerase; violet: non structural proteins (NSPs).
Quantum Gravity 3d rendered image of a comprehensive exploration of Quantum Gravity theories. String theory, loop quantum gravity (LOG), causal dynamical triangulation, twistor theory, gravitational waves, spacetime, gravity waves, quantum mechanics, quantum entanglement concepts.
Structure of novel coronavirus spike receptor-binding domain (pink) complexed with its receptor ACE2 (blue), surface modeel, white background
3D rendered simple solid icon
DNA close-up, DNA Molecule Model, DNA Strands, DNA animation
Liver is the third most frequent site of metastases in patients with head and neck squamous cell carcinoma (HNSCC).
Free Images: "bestof:PDB 1xbt EBI.jpg Small proteins Glucocorticoid receptor-like DNA-binding domain Glucocorticoid receptor-like DNA-binding domain Type II thymidine kinase zinc"
Melissodes_subillata,_f,_back,_velum,_Dorchester_Co,_MD_2015-12-09-12.47.jpg
Melissodes_subillata,_f,_face,_velum,_Dorchester_Co,_MD_2015-12-09-13.14.jpg
Melissodes_subillata,_f,_side,_velum,_Dorchester_Co,_MD_2015-12-09-13.41.jpg
The_red_boat.FZ200.jpg
Coelidiana_undata,_m,_brazil_2016-02-23-11.57.jpg
Milburn_Carrier_2.Cement_Carrier._FZ200.jpg
Andrena_nubecula,_F,_Face_ammonia,_MD,_Anne_Arundel_County_2014-02-21-17.13.59_ZS_PMax.jpg
Wasp_3_2012-06-18-17.59.jpg
Hypanthidioides_arenaria,_f,_face,_brazil_2014-08-06-06.12.01_ZS_PMax.jpg
Coelioxoides_waltheriae,_f,_peru,_side_2014-08-09-11.10.33_ZS_PMax.jpg
Rophitulus_species,_angle,_brazil_2014-08-06-09.51.24_ZS_PMax.jpg
Rophitulus_species,_face,_brazil_2014-08-06-10.08.10_ZS_PMax.jpg
centepede_2015-04-16-09.57.17_ZS_PMax.jpg
Coelioxoides_waltheriae,_f,_peru,_face_2014-08-09-10.59.51_ZS_PMax.jpg
Perdita_bishoppi,_female,_back_2012-07-09-19.45.jpg
Perdita_bishoppi,_female,_side_2012-07-09-20.02.jpg
Hypanthidioides_arenaria,_f,_back,_brazil_2014-08-05-22.39.13_ZS_PMax.jpg
Tadpole_2015-04-16-12.04.26_ZS_PMax.jpg
Ochreriades_fasciata,_m,_face,_israel_2014-08-06-08.44.07_ZS_PMax.jpg
Ochreriades_fasciata,_m,_side,_israel_2014-08-06-08.52.49_ZS_PMax.jpg
Rophitulus_species,_side,_brazil_2014-08-06-10.20.38_ZS_PMax.jpg
Lasioglossum_heterorhinum,_F,_Face,_UT,_Garfield_County_2014-05-09-17.50.19_ZS_PMax.jpg
Heriades_leavitti,_male,_underside_abdomen_2012-07-06-18.10.jpg
Andrena_arabis,_M,_Face,_NY,_Orange_Co_2013-06-07-17.49.58_ZS_PMax.jpg
Lasioglossum_glabriventre,_F,_Face1,_WY,_Lincoln_County_2014-06-20-16.15.37_ZS_PMax.jpg
Sap_Beetle_2015-04-13-21.55.11_ZS_PMax.jpg
Heriades_leavitti,_male,_side_2012-07-06-17.56.jpg
Coelioxoides_waltheriae,_f,_peru,_angle_2014-08-09-10.50.32_ZS_PMax.jpg
Nomada_tiftonensis,_m,_back,_Minnesota_2016-04-19-13.46.jpg
Nomada_tiftonensis,_m,_side,_Minnesota_2016-04-19-14.10.jpg
Prenolepis_imparis,_jan_reese,_st_michaels,_md_face_2016-09-09-11.00.jpg
Beetle,_Little_Stsimons_Island,_Georgia,_face_2016-02-03-16.28.jpg
Andrena_robertsonii,_f,_side,_Baltimore_Co,_MD_2016-04-15-19.31.jpg
Beetle2,_Little_Stsimons_Island,_Georgia,_face_2016-02-03-17.04.jpg
Andrena_robertsonii,_f,_back,_Baltimore_Co,_MD_2016-04-15-19.03.jpg
Andrena_robertsonii,_f,_face,_Baltimore_Co,_MD_2016-04-15-19.18.jpg
Lasioglossum_cressonii,_f,_face,_Maine,_Du_Clos_2015-12-01-14.08.jpg
Lasioglossum_cressonii,_f,_back,_Maine,_Du_Clos_2015-12-01-13.50.jpg
Lasioglossum_cressonii,_f,_side,_Maine,_Du_Clos_2015-12-01-14.23.jpg
Milford_Wanderer..jpg
Lasioglossum_inconditum,_F,_face,_WY,_Lincoln_County_2014-06-17-13.11.22_ZS_PMax.jpg
Lasioglossum_microlepoides,_F,_Face,_AZ,_Pima_County_2015-08-25-11.48.19_ZS_PMax_UDR.jpg
Lasioglossum_microlepoides,_F,_Side,_AZ,_Pima_County_2015-08-25-15.11.45_ZS_PMax_UDR.jpg
Ceratina_rectangulifera,_m,_panama,_side_2014-12-06-16.36.26_ZS_PMax.jpg
Ceratina_rectangulifera,_m,_panama,_back_2014-12-06-16.22.47_ZS_PMax.jpg
Short_tailed_shrew,_M,_Paw,_VA,_Loudon_County_2015-03-24-15.19.47_ZS_PMax.jpg
Ceratina_rectangulifera,_m,_panama,_face_2014-12-06-16.30.10_ZS_PMax.jpg
Meliturgula_haematospila,_back,_f,_south_africa_2014-08-04-19.25.29_ZS_PMax.jpg
bald_faced_hornet,_nest,_beltsville,_pg_county_2014-08-29-17.44.13_ZS_PMax.jpg
Ceratina_arizonensis,_side2,_ca,_santa_barbara_2015-04-20-12.16.53_ZS_PMax.jpg
Ceratina_rectangulifera,_f,_no_pin,_panama,_back_2014-12-06-14.15.14_ZS_PMax.jpg
Ceratina_nr_dentipes,_female,_side_2012-06-13-16.21.jpg
Lasioglossum_seillean,_F,_side,_New_Hampshire,_Coos_County_2015-10-13-13.40.jpg
Bombus_fraternus,_F,_face_2015-01-08-08.44.58_ZS_PMax.jpg
greensand_2015-04-10-21.01.01_ZS_PMax.jpg
fly,_md,_kent,_eastern_neck_nwr,_side_2015-05-25-14.16.43_ZS_PMax.jpg
Nomada_fragariae,_F,_Back,_MD,_PG_County_2015-09-01-15.52.19_ZS_PMax_UDR.jpg
Nomada_fragariae,_F,_Face,_MD,_PG_County_2015-09-01-14.40.10_ZS_PMax_UDR.jpg
Nomada_fragariae,_F,_Side,_MD,_PG_County_2015-09-01-15.06.11_ZS_PMax_UDR.jpg
Perdita_idonea,_female,_side_2012-07-09-20.26.jpg
Perdita_idonea,_female,_face_2012-07-09-20.16.jpg
Ceratina_rectangulifera,_f,_panama,_face_diffuser_2014-12-06-14.21.09_ZS_PMax.jpg
bald_faced_hornet,_nest_5x,_beltsville,_prince_georges_county_2014-08-29-17.33.33_ZS_PMax.jpg
Colletes_validus,_female,_face_2012-04-12-15.30.jpg
Lasioglossum_lineatulum,_female,_top_2012-06-25-15.40.jpg
Halictus_poeyi,_female,_back_2012-07-03-15.34.jpg
Ceratina_nr_dentipes,female,_face_2012-06-13-16.09.jpg
Ceratina_rectangulifera,_f,_panama,_side_2014-12-06-14.33.00_ZS_PMax.jpg
Ceratina_rectangulifera,_f,_panama,_back_2014-12-06-14.15.14_ZS_PMax.jpg
Stenotritus_pubescens,_f,_side,_australia_2014-07-05-12.18.33_ZS_PMax.jpg
stenotritus_pubescens,_f,_back,_australia_2014-07-05-12.32.47_ZS_PMax.jpg
stenotritus_pubescens,_f,_face,_australia_2014-07-05-12.40.14_ZS_PMax.jpg
Bombus_fraternus,_f,_ga,_baker,_back_2015-01-08-08.54.38_ZS_PMax.jpg
Bombus_fraternus,f,_ga,_baker,face_2015-01-08-09.06.56_ZS_PMax.jpg
Bombus_fraternus,_f,_ga,_baker,_side_2015-01-08-08.59.16_ZS_PMax.jpg
Ceratina_zeteki,_m,_panama,_side_2014-12-06-16.54.03_ZS_PMax.jpg
Ceratina_zeteki,_m,_panama,_face_2014-12-06-16.45.56_ZS_PMax.jpg
Ceratina_zeteki,_m,_panama,_back_2014-12-06-16.42.51_ZS_PMax.jpg
Colletes_phaceliae,_f,_back,_Pennington_Co,_South_Dakota_2015-12-01-12.06.jpg
Ceratina_species,_m,_side,_bright_green,_San_Francisco,_CA_2016-05-04-15.56.jpg
Ceratina_species,_m,_head,_bright_green,_San_Francisco,_CA_2016-05-04-15.48.jpg
Colletes_phaceliae,_f,_face,_Pennington_Co,_South_Dakota_2015-12-01-12.23.jpg
Lasioglossum_seillean,_F,_face,_New_Hampshire,_Coos_County_2015-10-15-15.34.jpg
Colletes_phaceliae,_f,_side,_Pennington_Co,_South_Dakota_2015-12-01-12.40.jpg
Hoplitis_simplex,_m,_side,_Charles_Co,_MD_2016-04-15-22.49.jpg
Hoplitis_simplex,_m,_back,_Charles_Co,_MD_2016-04-15-22.29.jpg
Hoplitis_simplex,_m,_face,_Charles_Co,_MD_2016-04-15-22.38.jpg
Nomada_seneciophila,_m,_face,_md,_charles_county_2015-11-20-18.00.jpg
Nomada_tiftonensis,_m,_face,_Minnesota_2016-06-27-17.27.jpg
Nomada_seneciophila,_m,_back,_md,_charles_county_2015-11-20-17.52.jpg
Nomada_seneciophila,_m,_side,_md,_charles_county_2015-11-20-18.12.jpg
Osmia_georgica,_f,_side,_Talbot_Co,_MD_2016-01-13-12.13.jpg
Washed_Megachile,_f,_face,_chile_2014-08-06-10.34.14_ZS_PMax.jpg
Meliturgula_haematospila,_face,_f,_south_africa_2014-08-04-19.37.13_ZS_PMax.jpg
Perdita_halictoides,_male,_face_2012-06-18-17.47.jpg
Ceratina_arizonensis,_side,_california,_santa_barbara_2015-04-20-12.12.00_ZS_PMax.jpg
Ceratina_arizonensis,_face,_california,_santa_barbara_2015-04-20-12.06.19_ZS_PMax.jpg
fly,_md,_kent,_eastern_neck,_nwr,face_2015-05-25-14.21.32_ZS_PMax.jpg
Lipotriches_,_f,_australia,_side_2014-11-02-01.05.45_ZS_PMax.jpg
Lipotriches_,_f,_australia,_face_2014-11-02-01.57.03_ZS_PMax.jpg
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