Motion in Hemoglobin (Hb) [hb]

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Classification Known Subunit Motion, Involving Allostery [S-a-2]

Structures
1HHO Conformation 3 [ PartsList ]
2HCO Conformation 2 [ PartsList ]
4HHB Conformation 1 [ PartsList ]

Description
Hemoglobin is a tetramer containing 2 copies of 2 (slightly) different subunits (alpha and beta). When oxygen binds to the deoxy form (the T-state), the heme ring slightly flattens. This causes one helix (EF turn, F helix, FG turn) to move, and this, in turn, destabilizes salt bridges between this helix and a helix on another subunit. A new inter-subunit salt bridge configuration is formed (with in total fewer bridges). This switch of configurations at the subunit interface causes one pair of subunits (e.g. alpha-1 and beta-1) to rotate 15 degrees and translate 0.8 A relative to the other pair (producing the high-affinity R-state). This in, in turn, affects the interactions about the heme in other subunits, giving rise to cooperative oxygen binding.

Particular values describing motion
Experimental Methods = x (Traditional x-ray)
Creation Date = 19970822
Modification Date = 19970822

References
G Fermi, M F Perutz, B Shaanan and R Fourme (1984). the crystal structure of human deoxyhaemoglobin at1.74 Å resolution. J. Mol. Biol. 175: 159-174. [Medline info for 6161375]
L Stryer (1995). Biochemistry. New York, W H Freeman and Company. [Medline info for 6161375]
J Baldwin and C Chothia (1979). Haemoglobin. The structural changes related to ligand binding and its allosteric mechanism. J. Mol. Biol. 129: 175-220. [Medline info for 6161375]
M Perutz (1978). Hemoglobin structure and respiratory transport. Sci. Am. 239: 92-125. [Medline info for 6161375]
M F Perutz (1989). Mechanisms of cooperativity and allosteric regulation in proteins. Quart. Rev. Biophys. 22: 139-237. [Medline info for 6161375]

Data and Graphics
Graphic-1 General figure of the folding topology in the globins. (This is actually myoglobin. Hemoglobin does not have the D helix!)

GO terms associated with structures
Molecular functionoxygen binding, binding
Cellular componenthemoglobin complex
Biological processtransport, oxygen transport

Morphs

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Best representative
Morph Morph name Structure #1 Structure #2 Residues
Hemoglobin 4hhb [ ] 2hco [ ] 141

User-submitted morphs
Morph Morph name Structure #1 Structure #2 Residues
Bar-Headed Goose Hem 1hv4 [ A ] 1a4f [ A ] 141
haem 4hhb [ A ] 3hhb [ A ] 141
Hemoglobin 1cg5 [ A ] 1cg8 [ A ] 141
hemoglobin 1bz0 [ A ] 1bbb [ A ] 141
Hemoglobin 3sdh [ A ] 1eca [ A ] 136
Hemoglobin 3sdh [ A ] 4sdh [ A ] 146
Hemoglobin 4hhb [ ] 1mbd [ ] 153
hemoglobin upload [ A ] upload [ A ] 141
hemoglobin 4hhb [ A ] 2hco [ A ] 141
Hemoglobin 4hhb [ A ] 2hco [ A ] 141
Hemoglobin 4hhb [ A ] 1mbd [ B ] 153
Hemoglobin 1hho [ A ] 2hco [ A ] 141
Hemoglobin 3hhb [ A ] 3hhb [ B ] 287
hemoglobin 3hhb [ A ] 2mm1 [ A ] 153
hemoglobin 3hhb [ B ] 2mm1 [ A ] 153
Hemoglobin 2hhb [ A ] 1hho [ A ] 141
hemoglobin upload [ A ] upload [ A ] 140
hemoglobin 1hho [ A ] 2hco [ A ] 141
Hemoglobin 1b86 [ A ] 1hho [ A ] 141
Hemoglobin 1cbl [ A ] 1cbm [ A ] 146
Hemoglobin 4hhb [ A ] 2hco [ A ] 141
Hemoglobin 4hhb [ A ] 1hho [ A ] 141
Hemoglobin 4hhb [ A ] 1hho [ A ] 141
Hemoglobin 4hhb [ A ] 1hho [ A ] 141
Hemoglobin 2hhb [ A ] 1hho [ A ] 141
Hemoglobin 2hhb [ A ] 1hho [ A ] 141
Hemoglobin 4hhb [ A ] 1hho [ A ] 141
Hemoglobin 4hhb [ A ] 1hho [ A ] 141
HEMOGLOBIN 1a3n [ A ] 1gzx [ A ] 141
Hemoglobin upload [ A ] upload [ A ] 141
hemoglobin - normal to sickle cell 2hhb [ A ] 2hbs [ A ] 141
Hemoglobin From D 1cg5 [ A ] 1cg8 [ A ] 141
hemoglobins upload [ A ] upload [ A ] 141
myoglobin --> hemoglobin 1abs [ A ] 1ash [ A ] 150
Myoglobin --> Hemoglobin 1mbd [ A ] 1ecd [ A ] 136
Test 4hhb [ A ] 1mbd [ B ] 153
Via_align 4hhb [ A ] 4hhb [ B ] 287
Via_align 4hhb [ A ] 1mbd [ A ] 153
Via_align 4hhb [ A ] 1mbd [ A ] 153
Via_align 4hhb [ A ] 1mbd [ A ] 153
Via_align 1mbd [ A ] 4hhb [ A ] 141

Automatic morphs
Morph Morph name Structure #1 Structure #2 Residues
Carboxyhemoglobin 1aj9 [ A ] 1bij [ A ] 141
Deoxyhemoglobin 1gli [ A ] 1aby [ A ] 283
Deoxyhemoglobin 1gli [ C ] 1aby [ A ] 283
Deoxyhemoglobin (Alpha Chain) 1c7c [ A ] 1gli [ A ] 141
Deoxyhemoglobin (Alpha Chain) 1c7c [ A ] 1gli [ C ] 141
Deoxyhemoglobin (Alpha Chain) 1c7d [ A ] 1gli [ C ] 141
Deoxyhemoglobin (Alpha Chain) 1c7d [ A ] 1gli [ A ] 141
Deoxyhemoglobin (Alpha Chain) 1c7b [ C ] 1bij [ A ] 141
Deoxyhemoglobin (Alpha Chain) 1c7d [ A ] 1aby [ A ] 283
Deoxyhemoglobin (Alpha Chain) 1c7c [ A ] 1aby [ A ] 283
Deoxyhemoglobin (Alpha Chain) 1c7b [ A ] 1bij [ A ] 141
Deshis Deoxyhemoglobin A 1axf [ A ] 1bij [ A ] 141
Deshis Deoxyhemoglobin A 1axf [ C ] 1bij [ A ] 141
Hemoglobin 1buw [ C ] 1bij [ A ] 141
Hemoglobin 1buw [ A ] 1bij [ A ] 141
Hemoglobin 1b86 [ C ] 1bij [ A ] 141
Hemoglobin 1rvw [ A ] 1bij [ A ] 141
Hemoglobin 1cls [ C ] 1bij [ A ] 141
Hemoglobin 1b86 [ A ] 1bij [ A ] 141
Hemoglobin 1cls [ A ] 1bij [ A ] 141
Hemoglobin 1vwt [ C ] 1bij [ A ] 141
Hemoglobin (Carbonmonoxy) - Ch 1hco [ A ] 1bij [ A ] 141
Hemoglobin (Deoxy) - Chain A 2hhb [ A ] 1bij [ A ] 141
Hemoglobin (Deoxy) - Chain C 2hhb [ C ] 1bij [ A ] 141
Hemoglobin (Deoxy) Mutant With 1dxt [ A ] 1bij [ A ] 141
Hemoglobin (Deoxy) Mutant With 1dxu [ A ] 1bij [ A ] 141
Hemoglobin (Deoxy) Mutant With 1dxt [ C ] 1bij [ A ] 141
Hemoglobin (Deoxy) Mutant With 1dxv [ C ] 1bij [ A ] 141
Hemoglobin (Deoxy) Mutant With 1dxu [ C ] 1bij [ A ] 141
Hemoglobin (Deoxy, Human Fetal 1fdh [ A ] 1bij [ A ] 141
Hemoglobin (T State, Alpha-Oxy 1hgc [ A ] 1bij [ A ] 141
Hemoglobin (T State, Alpha-Oxy 1hgc [ C ] 1bij [ A ] 141
Hemoglobin (T State, Aquomet) 1hgb [ C ] 1bij [ A ] 141
Hemoglobin (T State, Aquomet) 1hgb [ A ] 1bij [ A ] 141
Hemoglobin (T State, Deoxygena 1hga [ A ] 1bij [ A ] 141
Hemoglobin (T State, Deoxygena 1hga [ C ] 1bij [ A ] 141
Hemoglobin A 1bij [ A ] 1a9w [ A ] 141
Hemoglobin A 1bij [ A ] 1sdl [ A ] 141
Hemoglobin A 1bij [ A ] 1hac [ C ] 141
Hemoglobin A 1bij [ A ] 1a9w [ C ] 141
Hemoglobin A 1bij [ A ] 2hbc [ A ] 141
Hemoglobin A 1bij [ A ] 2hbd [ A ] 141
Hemoglobin A 1bij [ A ] 1hab [ A ] 141
Hemoglobin A 1bij [ A ] 2hco [ A ] 141
Hemoglobin A 1bij [ A ] 1hac [ A ] 141
Hemoglobin A 1bij [ A ] 1a0v [ A ] 141
Hemoglobin A 1bij [ A ] 1hba [ A ] 141
Hemoglobin A 1bij [ A ] 1nih [ C ] 141
Hemoglobin A 1bij [ A ] 1hbb [ A ] 141
Hemoglobin A 1bij [ A ] 1hbb [ C ] 141
Hemoglobin A 1bij [ A ] 1hba [ C ] 141
Hemoglobin A 1bij [ A ] 1a0x [ A ] 141
Hemoglobin A 1bij [ A ] 1dsh [ C ] 140
Hemoglobin A 1bij [ A ] 1g9v [ A ] 141
Hemoglobin A 1bij [ A ] 2hhe [ C ] 141
Hemoglobin A 1bij [ A ] 1hdb [ C ] 141
Hemoglobin A 1bij [ A ] 1dxv [ A ] 141
Hemoglobin A 1bij [ A ] 1a01 [ A ] 141
Hemoglobin A 1bij [ A ] 1a3n [ A ] 141
Hemoglobin A 1bij [ A ] 3hhb [ A ] 141
Hemoglobin A 1bij [ A ] 2hhd [ A ] 141
Hemoglobin A 1bij [ A ] 1g9v [ C ] 141
Hemoglobin A 1bij [ A ] 1gbu [ C ] 141
Hemoglobin A 1bij [ A ] 1a01 [ C ] 141
Hemoglobin A 1bij [ A ] 2hhd [ C ] 141
Hemoglobin A 1bij [ A ] 4hhb [ C ] 141
Hemoglobin A 1bij [ A ] 1vwt [ A ] 141
Hemoglobin A 1bij [ A ] 1a3o [ C ] 141
Hemoglobin A 1bij [ A ] 1sdk [ C ] 141
Hemoglobin A 1bij [ A ] 1sdl [ C ] 141
Hemoglobin A 1bij [ A ] 2hbe [ A ] 141
Hemoglobin A 1bij [ A ] 1sdk [ A ] 141
Hemoglobin A 1bij [ A ] 2hbf [ A ] 141
Hemoglobin A 1bij [ A ] 1hab [ C ] 141
Hemoglobin A 1bij [ A ] 1hho [ A ] 141
Hemoglobin A 1bij [ A ] 1thb [ A ] 141
Hemoglobin A 1bij [ A ] 1a0v [ C ] 141
Hemoglobin A 1bij [ A ] 1thb [ C ] 141
Hemoglobin A 1bij [ A ] 1a0u [ A ] 141
Hemoglobin A 1bij [ A ] 1nih [ A ] 141
Hemoglobin A 1bij [ A ] 1a0w [ A ] 141
Hemoglobin A 1bij [ A ] 1dsh [ A ] 140
Hemoglobin A 1bij [ A ] 1a0w [ C ] 141
Hemoglobin A 1bij [ A ] 1a0u [ C ] 141
Hemoglobin A 1bij [ A ] 1a0y [ A ] 141
Hemoglobin A 1bij [ A ] 1a0y [ C ] 141
Hemoglobin A 1bij [ A ] 1a0x [ C ] 141
Hemoglobin A 1bij [ A ] 2hbs [ G ] 141
Hemoglobin A 1bij [ A ] 1gbu [ A ] 141
Hemoglobin A 1bij [ A ] 4hhb [ A ] 141
Hemoglobin A 1bij [ A ] 1a3n [ C ] 141
Hemoglobin A 1bij [ A ] 1gbv [ A ] 141
Hemoglobin A 1bij [ A ] 1hdb [ A ] 141
Hemoglobin A 1bij [ A ] 1coh [ A ] 141
Hemoglobin A 1bij [ A ] 1a00 [ A ] 141
Hemoglobin A 1bij [ A ] 1gbv [ C ] 141
Hemoglobin A 1bij [ A ] 1a3o [ A ] 141
Hemoglobin A 1bij [ A ] 2hhe [ A ] 141
Hemoglobin A 1bij [ A ] 1a0z [ A ] 141
Hemoglobin A 1bij [ A ] 1coh [ C ] 141
Hemoglobin A 1bij [ A ] 1a00 [ C ] 141
Hemoglobin A 1bij [ A ] 1a0z [ C ] 141
Hemoglobin A (R2 State, Carbon 1bbb [ C ] 1bij [ A ] 141
Hemoglobin A (R2 State, Carbon 1bbb [ A ] 1bij [ A ] 141
Hemoglobin Alpha 1 6hbw [ C ] 1bij [ A ] 141
Hemoglobin Alpha 1 6hbw [ A ] 1bij [ A ] 141
Hemoglobin Alpha Chain 1ird [ A ] 1bij [ A ] 141
Hemoglobin Alpha Chain 1bz1 [ A ] 1bij [ A ] 141
Hemoglobin Alpha Chain 1qsh [ A ] 1bij [ A ] 141
Hemoglobin Alpha Chain 1bzz [ C ] 1bij [ A ] 141
Hemoglobin Alpha Chain 1bz0 [ C ] 1bij [ A ] 141
Hemoglobin Alpha Chain 1qsh [ C ] 1bij [ A ] 141
Hemoglobin Alpha Chain 1k0y [ A ] 1bij [ A ] 141
Hemoglobin Alpha Chain 1bz0 [ A ] 1bij [ A ] 141
Hemoglobin Alpha Chain 1bzz [ A ] 1bij [ A ] 141
Hemoglobin Alpha Chain 1k0y [ C ] 1bij [ A ] 141
Hemoglobin Alpha Chain 1qsi [ A ] 1bij [ A ] 141
Hemoglobin Alpha Chain 1bz1 [ C ] 1bij [ A ] 141
Hemoglobin Alpha Chain 1qsi [ C ] 1bij [ A ] 141
Hemoglobin S 2hbs [ A ] 1bij [ A ] 141
Hemoglobin S 2hbs [ E ] 1bij [ A ] 141
Hemoglobin S 2hbs [ C ] 1bij [ A ] 141
Hemoglobin S (Deoxy) - Chain A 1hbs [ A ] 1bij [ A ] 141
Hemoglobin S (Deoxy) - Chain C 1hbs [ C ] 1bij [ A ] 141
Hemoglobin S (Deoxy) - Chain E 1hbs [ E ] 1bij [ A ] 141
Hemoglobin S (Deoxy) - Chain G 1hbs [ G ] 1bij [ A ] 141
Hemoglobin Ypsilanti (Carbon M 1cmy [ C ] 1bij [ A ] 141
Hemoglobin Ypsilanti (Carbon M 1cmy [ A ] 1bij [ A ] 141
Hemoglobin: Alpha Chain 1dke [ C ] 1bij [ A ] 141
Hemoglobin: Alpha Chain 1dke [ A ] 1bij [ A ] 141

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Copyright 1995-2005 M. Gerstein, W. Krebs, S. Flores, N. Echols, and others
Email: Mark.Gerstein _at_ yale.edu