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4K71

Crystal structure of a high affinity Human Serum Albumin variant bound to the Neonatal Fc Receptor

Functional Information from GO Data
ChainGOidnamespacecontents
A0003677molecular_functionDNA binding
A0005504molecular_functionfatty acid binding
A0005507molecular_functioncopper ion binding
A0005515molecular_functionprotein binding
A0005576cellular_componentextracellular region
A0005615cellular_componentextracellular space
A0005634cellular_componentnucleus
A0005737cellular_componentcytoplasm
A0005788cellular_componentendoplasmic reticulum lumen
A0006783biological_processheme biosynthetic process
A0008289molecular_functionlipid binding
A0009267biological_processcellular response to starvation
A0015643molecular_functiontoxic substance binding
A0015723biological_processbilirubin transport
A0016209molecular_functionantioxidant activity
A0019825molecular_functionoxygen binding
A0020037molecular_functionheme binding
A0030170molecular_functionpyridoxal phosphate binding
A0031093cellular_componentplatelet alpha granule lumen
A0031667biological_processresponse to nutrient levels
A0032991cellular_componentprotein-containing complex
A0034599biological_processcellular response to oxidative stress
A0042167biological_processheme catabolic process
A0042802molecular_functionidentical protein binding
A0046872molecular_functionmetal ion binding
A0051087molecular_functionprotein-folding chaperone binding
A0051902biological_processnegative regulation of mitochondrial depolarization
A0070062cellular_componentextracellular exosome
A0072562cellular_componentblood microparticle
A0072732biological_processcellular response to calcium ion starvation
A0098869biological_processcellular oxidant detoxification
A0140104molecular_functionmolecular carrier activity
A0140272molecular_functionexogenous protein binding
A1903981molecular_functionenterobactin binding
C0000139cellular_componentGolgi membrane
C0002376biological_processimmune system process
C0002474biological_processantigen processing and presentation of peptide antigen via MHC class I
C0002477biological_processantigen processing and presentation of exogenous peptide antigen via MHC class Ib
C0002502biological_processpeptide antigen assembly with MHC class I protein complex
C0002503biological_processpeptide antigen assembly with MHC class II protein complex
C0002715biological_processregulation of natural killer cell mediated immunity
C0002726biological_processpositive regulation of T cell cytokine production
C0005198molecular_functionstructural molecule activity
C0005515molecular_functionprotein binding
C0005576cellular_componentextracellular region
C0005615cellular_componentextracellular space
C0005765cellular_componentlysosomal membrane
C0005783cellular_componentendoplasmic reticulum
C0005788cellular_componentendoplasmic reticulum lumen
C0005794cellular_componentGolgi apparatus
C0005886cellular_componentplasma membrane
C0005925cellular_componentfocal adhesion
C0006879biological_processintracellular iron ion homeostasis
C0006955biological_processimmune response
C0007608biological_processsensory perception of smell
C0007611biological_processlearning or memory
C0009897cellular_componentexternal side of plasma membrane
C0009986cellular_componentcell surface
C0010038biological_processresponse to metal ion
C0012507cellular_componentER to Golgi transport vesicle membrane
C0016020cellular_componentmembrane
C0019885biological_processantigen processing and presentation of endogenous peptide antigen via MHC class I
C0019886biological_processantigen processing and presentation of exogenous peptide antigen via MHC class II
C0023026molecular_functionMHC class II protein complex binding
C0030670cellular_componentphagocytic vesicle membrane
C0031901cellular_componentearly endosome membrane
C0031902cellular_componentlate endosome membrane
C0031905cellular_componentearly endosome lumen
C0033572biological_processtransferrin transport
C0034756biological_processregulation of iron ion transport
C0034757biological_processnegative regulation of iron ion transport
C0035580cellular_componentspecific granule lumen
C0042605molecular_functionpeptide antigen binding
C0042612cellular_componentMHC class I protein complex
C0042613cellular_componentMHC class II protein complex
C0042802molecular_functionidentical protein binding
C0042803molecular_functionprotein homodimerization activity
C0042824cellular_componentMHC class I peptide loading complex
C0048260biological_processpositive regulation of receptor-mediated endocytosis
C0048261biological_processnegative regulation of receptor-mediated endocytosis
C0050680biological_processnegative regulation of epithelial cell proliferation
C0050768biological_processnegative regulation of neurogenesis
C0050778biological_processpositive regulation of immune response
C0050870biological_processpositive regulation of T cell activation
C0051289biological_processprotein homotetramerization
C0055038cellular_componentrecycling endosome membrane
C0070062cellular_componentextracellular exosome
C0071281biological_processcellular response to iron ion
C0071316biological_processcellular response to nicotine
C1904724cellular_componenttertiary granule lumen
C1990000biological_processamyloid fibril formation
C1990712cellular_componentHFE-transferrin receptor complex
C2000774biological_processpositive regulation of cellular senescence
C2000978biological_processnegative regulation of forebrain neuron differentiation
D0003677molecular_functionDNA binding
D0005504molecular_functionfatty acid binding
D0005507molecular_functioncopper ion binding
D0005515molecular_functionprotein binding
D0005576cellular_componentextracellular region
D0005615cellular_componentextracellular space
D0005634cellular_componentnucleus
D0005737cellular_componentcytoplasm
D0005788cellular_componentendoplasmic reticulum lumen
D0006783biological_processheme biosynthetic process
D0008289molecular_functionlipid binding
D0009267biological_processcellular response to starvation
D0015643molecular_functiontoxic substance binding
D0015723biological_processbilirubin transport
D0016209molecular_functionantioxidant activity
D0019825molecular_functionoxygen binding
D0020037molecular_functionheme binding
D0030170molecular_functionpyridoxal phosphate binding
D0031093cellular_componentplatelet alpha granule lumen
D0031667biological_processresponse to nutrient levels
D0032991cellular_componentprotein-containing complex
D0034599biological_processcellular response to oxidative stress
D0042167biological_processheme catabolic process
D0042802molecular_functionidentical protein binding
D0046872molecular_functionmetal ion binding
D0051087molecular_functionprotein-folding chaperone binding
D0051902biological_processnegative regulation of mitochondrial depolarization
D0070062cellular_componentextracellular exosome
D0072562cellular_componentblood microparticle
D0072732biological_processcellular response to calcium ion starvation
D0098869biological_processcellular oxidant detoxification
D0140104molecular_functionmolecular carrier activity
D0140272molecular_functionexogenous protein binding
D1903981molecular_functionenterobactin binding
F0000139cellular_componentGolgi membrane
F0002376biological_processimmune system process
F0002474biological_processantigen processing and presentation of peptide antigen via MHC class I
F0002477biological_processantigen processing and presentation of exogenous peptide antigen via MHC class Ib
F0002502biological_processpeptide antigen assembly with MHC class I protein complex
F0002503biological_processpeptide antigen assembly with MHC class II protein complex
F0002715biological_processregulation of natural killer cell mediated immunity
F0002726biological_processpositive regulation of T cell cytokine production
F0005198molecular_functionstructural molecule activity
F0005515molecular_functionprotein binding
F0005576cellular_componentextracellular region
F0005615cellular_componentextracellular space
F0005765cellular_componentlysosomal membrane
F0005783cellular_componentendoplasmic reticulum
F0005788cellular_componentendoplasmic reticulum lumen
F0005794cellular_componentGolgi apparatus
F0005886cellular_componentplasma membrane
F0005925cellular_componentfocal adhesion
F0006879biological_processintracellular iron ion homeostasis
F0006955biological_processimmune response
F0007608biological_processsensory perception of smell
F0007611biological_processlearning or memory
F0009897cellular_componentexternal side of plasma membrane
F0009986cellular_componentcell surface
F0010038biological_processresponse to metal ion
F0012507cellular_componentER to Golgi transport vesicle membrane
F0016020cellular_componentmembrane
F0019885biological_processantigen processing and presentation of endogenous peptide antigen via MHC class I
F0019886biological_processantigen processing and presentation of exogenous peptide antigen via MHC class II
F0023026molecular_functionMHC class II protein complex binding
F0030670cellular_componentphagocytic vesicle membrane
F0031901cellular_componentearly endosome membrane
F0031902cellular_componentlate endosome membrane
F0031905cellular_componentearly endosome lumen
F0033572biological_processtransferrin transport
F0034756biological_processregulation of iron ion transport
F0034757biological_processnegative regulation of iron ion transport
F0035580cellular_componentspecific granule lumen
F0042605molecular_functionpeptide antigen binding
F0042612cellular_componentMHC class I protein complex
F0042613cellular_componentMHC class II protein complex
F0042802molecular_functionidentical protein binding
F0042803molecular_functionprotein homodimerization activity
F0042824cellular_componentMHC class I peptide loading complex
F0048260biological_processpositive regulation of receptor-mediated endocytosis
F0048261biological_processnegative regulation of receptor-mediated endocytosis
F0050680biological_processnegative regulation of epithelial cell proliferation
F0050768biological_processnegative regulation of neurogenesis
F0050778biological_processpositive regulation of immune response
F0050870biological_processpositive regulation of T cell activation
F0051289biological_processprotein homotetramerization
F0055038cellular_componentrecycling endosome membrane
F0070062cellular_componentextracellular exosome
F0071281biological_processcellular response to iron ion
F0071316biological_processcellular response to nicotine
F1904724cellular_componenttertiary granule lumen
F1990000biological_processamyloid fibril formation
F1990712cellular_componentHFE-transferrin receptor complex
F2000774biological_processpositive regulation of cellular senescence
F2000978biological_processnegative regulation of forebrain neuron differentiation
Functional Information from PDB Data
site_idAC1
Number of Residues2
DetailsBINDING SITE FOR RESIDUE SO4 A 601
ChainResidue
APRO282
ALEU283

site_idAC2
Number of Residues3
DetailsBINDING SITE FOR RESIDUE SO4 A 602
ChainResidue
AHIS9
ALYS12
AGLU57

site_idAC3
Number of Residues3
DetailsBINDING SITE FOR RESIDUE SO4 A 603
ChainResidue
AALA59
AGLU60
EARG214

site_idAC4
Number of Residues3
DetailsBINDING SITE FOR RESIDUE SO4 A 604
ChainResidue
AHIS9
AARG10
AHIS3

site_idAC5
Number of Residues6
DetailsBINDING SITE FOR RESIDUE SO4 A 605
ChainResidue
ATYR150
ALEU238
AHIS242
AARG257
AALA291
AHOH708

site_idAC6
Number of Residues5
DetailsBINDING SITE FOR RESIDUE SO4 A 606
ChainResidue
APHE206
ALYS351
ASER480
ALEU481
AVAL482

site_idAC7
Number of Residues5
DetailsBINDING SITE FOR RESIDUE SO4 A 607
ChainResidue
AHIS146
ASER193
AALA194
AGLN459
AHOH705

site_idAC8
Number of Residues2
DetailsBINDING SITE FOR RESIDUE SO4 B 301
ChainResidue
BASN39
BARG42

site_idAC9
Number of Residues2
DetailsBINDING SITE FOR RESIDUE SO4 B 302
ChainResidue
BSER181
BARG183

site_idBC1
Number of Residues2
DetailsBINDING SITE FOR RESIDUE SO4 C 101
ChainResidue
CARG3
CTHR4

site_idBC2
Number of Residues2
DetailsBINDING SITE FOR RESIDUE SO4 C 102
ChainResidue
CSER57
CLYS58

site_idBC3
Number of Residues2
DetailsBINDING SITE FOR RESIDUE SO4 D 601
ChainResidue
BARG264
DASN44

site_idBC4
Number of Residues5
DetailsBINDING SITE FOR RESIDUE SO4 D 602
ChainResidue
DPHE156
DLYS159
DARG160
DLYS281
DGLU285

site_idBC5
Number of Residues3
DetailsBINDING SITE FOR RESIDUE SO4 D 603
ChainResidue
BARG214
DALA59
DGLU60

site_idBC6
Number of Residues5
DetailsBINDING SITE FOR RESIDUE SO4 D 604
ChainResidue
DTYR150
DLEU238
DHIS242
DARG257
DALA291

site_idBC7
Number of Residues5
DetailsBINDING SITE FOR RESIDUE SO4 D 605
ChainResidue
DPHE206
DLYS351
DSER480
DLEU481
DVAL482

site_idBC8
Number of Residues5
DetailsBINDING SITE FOR RESIDUE SO4 D 606
ChainResidue
DLYS195
DLYS199
DTRP214
DARG218
DARG222

site_idBC9
Number of Residues2
DetailsBINDING SITE FOR RESIDUE SO4 E 301
ChainResidue
ESER181
EARG183

site_idCC1
Number of Residues4
DetailsBINDING SITE FOR RESIDUE SO4 F 101
ChainResidue
FLYS41
FPHE70
FTHR71
FTYR78

Functional Information from PROSITE/UniProt
site_idPS00212
Number of Residues25
DetailsALBUMIN_1 Albumin domain signature. YkaafteCCqaAdkaaCLlpkldeL
ChainResidueDetails
ATYR161-LEU185
ATYR353-PHE377
APHE551-LEU575

site_idPS00290
Number of Residues7
DetailsIG_MHC Immunoglobulins and major histocompatibility complex proteins signature. YCCIVQH
ChainResidueDetails
BTYR250-HIS256
CTYR78-HIS84

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues384
DetailsDomain: {"description":"Albumin 2","evidences":[{"source":"PROSITE-ProRule","id":"PRU00769","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues197
DetailsDomain: {"description":"Albumin 3","evidences":[{"source":"PROSITE-ProRule","id":"PRU00769","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues2
DetailsBinding site: {"evidences":[{"source":"UniProtKB","id":"P02770","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues12
DetailsBinding site: {"evidences":[{"source":"UniProtKB","id":"P02769","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues6
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"28567254","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"5IJF","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues2
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"656055","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues72
DetailsSite: {"description":"Not glycated","evidences":[{"source":"PubMed","id":"15047055","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI8
Number of Residues2
DetailsSite: {"description":"Aspirin-acetylated lysine"}
ChainResidueDetails

site_idSWS_FT_FI9
Number of Residues2
DetailsModified residue: {"description":"Phosphoserine; by FAM20C","evidences":[{"source":"PubMed","id":"26091039","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI10
Number of Residues2
DetailsModified residue: {"description":"Phosphoserine; by FAM20C","evidences":[{"source":"PubMed","id":"26091039","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"18318008","evidenceCode":"ECO:0007744"},{"source":"PubMed","id":"24275569","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI11
Number of Residues2
DetailsModified residue: {"description":"Phosphoserine; by FAM20C","evidences":[{"source":"PubMed","id":"26091039","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"24275569","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI12
Number of Residues2
DetailsModified residue: {"description":"Phosphothreonine; by FAM20C","evidences":[{"source":"PubMed","id":"26091039","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI13
Number of Residues7
DetailsModified residue: {"description":"N6-succinyllysine","evidences":[{"source":"UniProtKB","id":"P07724","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI14
Number of Residues2
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"UniProtKB","id":"P07724","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI15
Number of Residues2
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"PubMed","id":"19690332","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI16
Number of Residues4
DetailsModified residue: {"description":"Phosphothreonine","evidences":[{"source":"PubMed","id":"19690332","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI17
Number of Residues2
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"PubMed","id":"24275569","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI18
Number of Residues2
DetailsModified residue: {"description":"N6-methyllysine; alternate","evidences":[{"source":"PubMed","id":"24129315","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI19
Number of Residues8
DetailsGlycosylation: {"description":"N-linked (Glc) (glycation) lysine","evidences":[{"source":"PubMed","id":"3759977","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI20
Number of Residues26
DetailsGlycosylation: {"description":"N-linked (Glc) (glycation) lysine; in vitro","evidences":[{"source":"PubMed","id":"15047055","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI21
Number of Residues2
DetailsGlycosylation: {"description":"N-linked (Glc) (glycation) lysine; in vitro","evidences":[{"source":"PubMed","id":"3759977","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"6853480","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI22
Number of Residues4
DetailsGlycosylation: {"description":"N-linked (Glc) (glycation) lysine","evidences":[{"source":"PubMed","id":"15047055","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"3759977","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI23
Number of Residues2
DetailsGlycosylation: {"description":"N-linked (GlcNAc...) asparagine; in variant Redhill","featureId":"CAR_000226"}
ChainResidueDetails

site_idSWS_FT_FI24
Number of Residues2
DetailsGlycosylation: {"description":"N-linked (GlcNAc...) asparagine; in variant Casebrook","featureId":"CAR_000069"}
ChainResidueDetails

site_idSWS_FT_FI25
Number of Residues2
DetailsGlycosylation: {"description":"N-linked (Glc) (glycation) lysine","evidences":[{"source":"PubMed","id":"15047055","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"3759977","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"6706980","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"6853480","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI26
Number of Residues2
DetailsGlycosylation: {"description":"N-linked (Glc) (glycation) lysine; alternate","evidences":[{"source":"PubMed","id":"3759977","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI27
Number of Residues174
DetailsDomain: {"description":"Ig-like C1-type","evidences":[{"source":"PROSITE-ProRule","id":"PRU00114","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI28
Number of Residues178
DetailsRegion: {"description":"Alpha-2","evidences":[{"source":"PubMed","id":"10933786","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1EXU","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI29
Number of Residues178
DetailsRegion: {"description":"Alpha-3","evidences":[{"source":"PubMed","id":"10933786","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1EXU","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI30
Number of Residues2
DetailsGlycosylation: {"description":"N-linked (GlcNAc...) asparagine","evidences":[{"evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI31
Number of Residues176
DetailsDomain: {"description":"Ig-like C1-type"}
ChainResidueDetails

site_idSWS_FT_FI32
Number of Residues2
DetailsModified residue: {"description":"Pyrrolidone carboxylic acid; in form pI 5.3","evidences":[{"source":"PubMed","id":"7554280","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI33
Number of Residues2
DetailsGlycosylation: {"description":"N-linked (Glc) (glycation) isoleucine; in hemodialysis-associated amyloidosis","evidences":[{"source":"PubMed","id":"7918443","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI34
Number of Residues12
DetailsGlycosylation: {"description":"N-linked (Glc) (glycation) lysine; in vitro","evidences":[{"source":"PubMed","id":"7918443","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

247536

PDB entries from 2026-01-14

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