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P30301

- MIP_HUMAN

UniProt

P30301 - MIP_HUMAN

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Protein

Lens fiber major intrinsic protein

Gene
MIP, AQP0
Organism
Homo sapiens (Human)
Status
Reviewed - Annotation score: 5 out of 5 - Experimental evidence at protein leveli

Functioni

Water channel. Channel activity is down-regulated by CALM when cytoplasmic Ca2+ levels are increased. May be responsible for regulating the osmolarity of the lens. Interactions between homotetramers from adjoining membranes may stabilize cell junctions in the eye lens core By similarity.

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Sitei149 – 1491Important for water channel gating By similarity

GO - Molecular functioni

  1. calmodulin binding Source: UniProtKB
  2. structural constituent of eye lens Source: UniProtKB-KW
  3. transporter activity Source: ProtInc
  4. water channel activity Source: UniProtKB

GO - Biological processi

  1. canalicular bile acid transport Source: Ensembl
  2. lens development in camera-type eye Source: Ensembl
  3. response to stimulus Source: UniProtKB-KW
  4. transmembrane transport Source: Reactome
  5. visual perception Source: UniProtKB-KW
  6. water transport Source: UniProtKB
Complete GO annotation...

Keywords - Molecular functioni

Eye lens protein

Keywords - Biological processi

Sensory transduction, Transport, Vision

Enzyme and pathway databases

ReactomeiREACT_23826. Passive transport by Aquaporins.

Names & Taxonomyi

Protein namesi
Recommended name:
Lens fiber major intrinsic protein
Alternative name(s):
Aquaporin-0
MIP26
Short name:
MP26
Gene namesi
Name:MIP
Synonyms:AQP0
OrganismiHomo sapiens (Human)
Taxonomic identifieri9606 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo
ProteomesiUP000005640: Chromosome 12

Organism-specific databases

HGNCiHGNC:7103. MIP.

Subcellular locationi

Topology

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Topological domaini1 – 88Cytoplasmic By similarity
Transmembranei9 – 3224Helical; By similarityAdd
BLAST
Topological domaini33 – 386Extracellular By similarity
Transmembranei39 – 6123Helical; By similarityAdd
BLAST
Intramembranei62 – 676 By similarity
Intramembranei68 – 7811Helical; By similarityAdd
BLAST
Topological domaini79 – 846Cytoplasmic By similarity
Transmembranei85 – 10723Helical; By similarityAdd
BLAST
Topological domaini108 – 12619Extracellular By similarityAdd
BLAST
Transmembranei127 – 14721Helical; By similarityAdd
BLAST
Topological domaini148 – 15912Cytoplasmic By similarityAdd
BLAST
Transmembranei160 – 17617Helical; By similarityAdd
BLAST
Intramembranei177 – 1837 By similarity
Intramembranei184 – 19411Helical; By similarityAdd
BLAST
Topological domaini195 – 2006Extracellular By similarity
Transmembranei201 – 21919Helical; By similarityAdd
BLAST
Topological domaini220 – 26344Cytoplasmic By similarityAdd
BLAST

GO - Cellular componenti

  1. gap junction Source: UniProtKB-SubCell
  2. integral component of plasma membrane Source: UniProtKB
  3. intracellular canaliculus Source: Ensembl
  4. intracellular membrane-bounded organelle Source: Ensembl
  5. plasma membrane Source: Reactome
Complete GO annotation...

Keywords - Cellular componenti

Cell junction, Cell membrane, Gap junction, Membrane

Pathology & Biotechi

Involvement in diseasei

Cataract 15, multiple types (CTRCT15) [MIM:615274]: An opacification of the crystalline lens of the eye that frequently results in visual impairment or blindness. Opacities vary in morphology, are often confined to a portion of the lens, and may be static or progressive. CTRCT15 includes polymorphic, progressive punctate lamellar, cortical, anterior and posterior polar, nonprogressive lamellar with sutural opacities, embryonic nuclear, and pulverulent cortical, among others.
Note: The disease is caused by mutations affecting the gene represented in this entry.3 Publications
Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Natural varianti134 – 1341E → G in CTRCT15; non-progressive lamellar cataract; loss of activity. 2 Publications
VAR_011497
Natural varianti138 – 1381T → R in CTRCT15; progressive polymorphic and lamellar cataract; loss of activity. 2 Publications
VAR_011498

Keywords - Diseasei

Cataract, Disease mutation

Organism-specific databases

MIMi615274. phenotype.
Orphaneti98985. Cataract with Y-shaped suture opacities.
98989. Cerulean cataract.
98991. Nuclear cataract.
98994. Total congenital cataract.
98995. Zonular cataract.
PharmGKBiPA30821.

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 263263Lens fiber major intrinsic proteinPRO_0000063912Add
BLAST

Amino acid modifications

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Modified residuei235 – 2351Phosphoserine1 Publication
Modified residuei245 – 2451Phosphoserine By similarity
Modified residuei246 – 2461Deamidated asparagine; by deterioration1 Publication
Modified residuei259 – 2591Deamidated asparagine; by deterioration1 Publication

Post-translational modificationi

Subject to partial proteolytic cleavage in the eye lens core. Partial proteolysis promotes interactions between tetramers from adjoining membranes By similarity.

Keywords - PTMi

Phosphoprotein

Proteomic databases

PaxDbiP30301.
PRIDEiP30301.

2D gel databases

OGPiP30301.

PTM databases

PhosphoSiteiP30301.

Miscellaneous databases

PMAP-CutDBP30301.

Expressioni

Tissue specificityi

Major component of lens fiber gap junctions.

Gene expression databases

BgeeiP30301.
CleanExiHS_MIP.
GenevestigatoriP30301.

Interactioni

Subunit structurei

Homotetramer. Homooctamer formed by head-to-head interaction between homotetramers from adjoining membranes. Interacts with CALM; one CALM molecule interacts with the cytoplasmic domains of two aquaporins, leading to channel closure By similarity.

Protein-protein interaction databases

BioGridi110430. 6 interactions.
IntActiP30301. 1 interaction.
MINTiMINT-8415310.
STRINGi9606.ENSP00000257979.

Structurei

3D structure databases

ProteinModelPortaliP30301.
SMRiP30301. Positions 2-263.

Family & Domainsi

Region

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Regioni227 – 23711Interaction with CALM By similarityAdd
BLAST

Motif

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Motifi68 – 703NPA 1
Motifi184 – 1863NPA 2

Domaini

Aquaporins contain two tandem repeats each containing two membrane-spanning helices and a pore-forming loop with the signature motif Asn-Pro-Ala (NPA). Each tandem repeat contains a loop and a short helix that enter and leave the lipid bilayer on the same side By similarity.

Sequence similaritiesi

Keywords - Domaini

Repeat, Transmembrane, Transmembrane helix

Phylogenomic databases

eggNOGiCOG0580.
HOGENOMiHOG000288286.
HOVERGENiHBG000312.
InParanoidiP30301.
KOiK09863.
OMAiMWELRST.
OrthoDBiEOG7N8ZWD.
PhylomeDBiP30301.
TreeFamiTF312940.

Family and domain databases

Gene3Di1.20.1080.10. 1 hit.
InterProiIPR023271. Aquaporin-like.
IPR000425. MIP.
IPR022357. MIP_CS.
[Graphical view]
PANTHERiPTHR19139. PTHR19139. 1 hit.
PfamiPF00230. MIP. 1 hit.
[Graphical view]
PRINTSiPR00783. MINTRINSICP.
SUPFAMiSSF81338. SSF81338. 1 hit.
TIGRFAMsiTIGR00861. MIP. 1 hit.
PROSITEiPS00221. MIP. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

P30301-1 [UniParc]FASTAAdd to Basket

« Hide

MWELRSASFW RAIFAEFFAT LFYVFFGLGS SLRWAPGPLH VLQVAMAFGL    50
ALATLVQSVG HISGAHVNPA VTFAFLVGSQ MSLLRAFCYM AAQLLGAVAG 100
AAVLYSVTPP AVRGNLALNT LHPAVSVGQA TTVEIFLTLQ FVLCIFATYD 150
ERRNGQLGSV ALAVGFSLAL GHLFGMYYTG AGMNPARSFA PAILTGNFTN 200
HWVYWVGPII GGGLGSLLYD FLLFPRLKSI SERLSVLKGA KPDVSNGQPE 250
VTGEPVELNT QAL 263
Length:263
Mass (Da):28,122
Last modified:April 1, 1993 - v1
Checksum:i6A864C8AA53CBC4B
GO

Natural variant

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Natural varianti134 – 1341E → G in CTRCT15; non-progressive lamellar cataract; loss of activity. 2 Publications
VAR_011497
Natural varianti138 – 1381T → R in CTRCT15; progressive polymorphic and lamellar cataract; loss of activity. 2 Publications
VAR_011498

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
U36308 Genomic DNA. Translation: AAC02794.2.
AC024884 Genomic DNA. No translation available.
BC074913 mRNA. Translation: AAH74913.1.
BC117474 mRNA. Translation: AAI17475.1.
CCDSiCCDS8919.1.
PIRiA55279.
RefSeqiNP_036196.1. NM_012064.3.
UniGeneiHs.574026.

Genome annotation databases

EnsembliENST00000257979; ENSP00000257979; ENSG00000135517.
GeneIDi4284.
KEGGihsa:4284.
UCSCiuc001slh.3. human.

Polymorphism databases

DMDMi266537.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
U36308 Genomic DNA. Translation: AAC02794.2 .
AC024884 Genomic DNA. No translation available.
BC074913 mRNA. Translation: AAH74913.1 .
BC117474 mRNA. Translation: AAI17475.1 .
CCDSi CCDS8919.1.
PIRi A55279.
RefSeqi NP_036196.1. NM_012064.3.
UniGenei Hs.574026.

3D structure databases

ProteinModelPortali P30301.
SMRi P30301. Positions 2-263.
ModBasei Search...
MobiDBi Search...

Protein-protein interaction databases

BioGridi 110430. 6 interactions.
IntActi P30301. 1 interaction.
MINTi MINT-8415310.
STRINGi 9606.ENSP00000257979.

Chemistry

GuidetoPHARMACOLOGYi 687.

PTM databases

PhosphoSitei P30301.

Polymorphism databases

DMDMi 266537.

2D gel databases

OGPi P30301.

Proteomic databases

PaxDbi P30301.
PRIDEi P30301.

Protocols and materials databases

DNASUi 4284.
Structural Biology Knowledgebase Search...

Genome annotation databases

Ensembli ENST00000257979 ; ENSP00000257979 ; ENSG00000135517 .
GeneIDi 4284.
KEGGi hsa:4284.
UCSCi uc001slh.3. human.

Organism-specific databases

CTDi 4284.
GeneCardsi GC12M056843.
HGNCi HGNC:7103. MIP.
MIMi 154050. gene.
615274. phenotype.
neXtProti NX_P30301.
Orphaneti 98985. Cataract with Y-shaped suture opacities.
98989. Cerulean cataract.
98991. Nuclear cataract.
98994. Total congenital cataract.
98995. Zonular cataract.
PharmGKBi PA30821.
GenAtlasi Search...

Phylogenomic databases

eggNOGi COG0580.
HOGENOMi HOG000288286.
HOVERGENi HBG000312.
InParanoidi P30301.
KOi K09863.
OMAi MWELRST.
OrthoDBi EOG7N8ZWD.
PhylomeDBi P30301.
TreeFami TF312940.

Enzyme and pathway databases

Reactomei REACT_23826. Passive transport by Aquaporins.

Miscellaneous databases

GeneWikii MIP_(gene).
GenomeRNAii 4284.
NextBioi 16853.
PMAP-CutDB P30301.
PROi P30301.
SOURCEi Search...

Gene expression databases

Bgeei P30301.
CleanExi HS_MIP.
Genevestigatori P30301.

Family and domain databases

Gene3Di 1.20.1080.10. 1 hit.
InterProi IPR023271. Aquaporin-like.
IPR000425. MIP.
IPR022357. MIP_CS.
[Graphical view ]
PANTHERi PTHR19139. PTHR19139. 1 hit.
Pfami PF00230. MIP. 1 hit.
[Graphical view ]
PRINTSi PR00783. MINTRINSICP.
SUPFAMi SSF81338. SSF81338. 1 hit.
TIGRFAMsi TIGR00861. MIP. 1 hit.
PROSITEi PS00221. MIP. 1 hit.
[Graphical view ]
ProtoNeti Search...

Publicationsi

« Hide 'large scale' publications
  1. "Genomic cloning, complete nucleotide sequence, and structure of the human gene encoding the major intrinsic protein (MIP) of the lens."
    Pisano M.M., Chepelinsky A.B.
    Genomics 11:981-990(1991) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
  2. "The finished DNA sequence of human chromosome 12."
    Scherer S.E., Muzny D.M., Buhay C.J., Chen R., Cree A., Ding Y., Dugan-Rocha S., Gill R., Gunaratne P., Harris R.A., Hawes A.C., Hernandez J., Hodgson A.V., Hume J., Jackson A., Khan Z.M., Kovar-Smith C., Lewis L.R.
    , Lozado R.J., Metzker M.L., Milosavljevic A., Miner G.R., Montgomery K.T., Morgan M.B., Nazareth L.V., Scott G., Sodergren E., Song X.-Z., Steffen D., Lovering R.C., Wheeler D.A., Worley K.C., Yuan Y., Zhang Z., Adams C.Q., Ansari-Lari M.A., Ayele M., Brown M.J., Chen G., Chen Z., Clerc-Blankenburg K.P., Davis C., Delgado O., Dinh H.H., Draper H., Gonzalez-Garay M.L., Havlak P., Jackson L.R., Jacob L.S., Kelly S.H., Li L., Li Z., Liu J., Liu W., Lu J., Maheshwari M., Nguyen B.-V., Okwuonu G.O., Pasternak S., Perez L.M., Plopper F.J.H., Santibanez J., Shen H., Tabor P.E., Verduzco D., Waldron L., Wang Q., Williams G.A., Zhang J., Zhou J., Allen C.C., Amin A.G., Anyalebechi V., Bailey M., Barbaria J.A., Bimage K.E., Bryant N.P., Burch P.E., Burkett C.E., Burrell K.L., Calderon E., Cardenas V., Carter K., Casias K., Cavazos I., Cavazos S.R., Ceasar H., Chacko J., Chan S.N., Chavez D., Christopoulos C., Chu J., Cockrell R., Cox C.D., Dang M., Dathorne S.R., David R., Davis C.M., Davy-Carroll L., Deshazo D.R., Donlin J.E., D'Souza L., Eaves K.A., Egan A., Emery-Cohen A.J., Escotto M., Flagg N., Forbes L.D., Gabisi A.M., Garza M., Hamilton C., Henderson N., Hernandez O., Hines S., Hogues M.E., Huang M., Idlebird D.G., Johnson R., Jolivet A., Jones S., Kagan R., King L.M., Leal B., Lebow H., Lee S., LeVan J.M., Lewis L.C., London P., Lorensuhewa L.M., Loulseged H., Lovett D.A., Lucier A., Lucier R.L., Ma J., Madu R.C., Mapua P., Martindale A.D., Martinez E., Massey E., Mawhiney S., Meador M.G., Mendez S., Mercado C., Mercado I.C., Merritt C.E., Miner Z.L., Minja E., Mitchell T., Mohabbat F., Mohabbat K., Montgomery B., Moore N., Morris S., Munidasa M., Ngo R.N., Nguyen N.B., Nickerson E., Nwaokelemeh O.O., Nwokenkwo S., Obregon M., Oguh M., Oragunye N., Oviedo R.J., Parish B.J., Parker D.N., Parrish J., Parks K.L., Paul H.A., Payton B.A., Perez A., Perrin W., Pickens A., Primus E.L., Pu L.-L., Puazo M., Quiles M.M., Quiroz J.B., Rabata D., Reeves K., Ruiz S.J., Shao H., Sisson I., Sonaike T., Sorelle R.P., Sutton A.E., Svatek A.F., Svetz L.A., Tamerisa K.S., Taylor T.R., Teague B., Thomas N., Thorn R.D., Trejos Z.Y., Trevino B.K., Ukegbu O.N., Urban J.B., Vasquez L.I., Vera V.A., Villasana D.M., Wang L., Ward-Moore S., Warren J.T., Wei X., White F., Williamson A.L., Wleczyk R., Wooden H.S., Wooden S.H., Yen J., Yoon L., Yoon V., Zorrilla S.E., Nelson D., Kucherlapati R., Weinstock G., Gibbs R.A.
    Nature 440:346-351(2006) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
  3. "The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)."
    The MGC Project Team
    Genome Res. 14:2121-2127(2004) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
    Tissue: Testis.
  4. "Characterization of human lens major intrinsic protein structure."
    Schey K.L., Little M., Fowler J.G., Crouch R.K.
    Invest. Ophthalmol. Vis. Sci. 41:175-182(2000) [PubMed] [Europe PMC] [Abstract]
    Cited for: PHOSPHORYLATION AT SER-235, DEAMIDATION AT ASN-246 AND ASN-259, IDENTIFICATION BY MASS SPECTROMETRY.
  5. "Novel single-base deletional mutation in major intrinsic protein (MIP) in autosomal dominant cataract."
    Geyer D.D., Spence M.A., Johannes M., Flodman P., Clancy K.P., Berry R., Sparkes R.S., Jonsen M.D., Isenberg S.J., Bateman J.B.
    Am. J. Ophthalmol. 141:761-763(2006) [PubMed] [Europe PMC] [Abstract]
    Cited for: INVOLVEMENT IN CTRCT15.
  6. "Missense mutations in MIP underlie autosomal dominant 'polymorphic' and lamellar cataracts linked to 12q."
    Berry V., Francis P., Kaushal S., Moore A., Bhattacharya S.
    Nat. Genet. 25:15-17(2000) [PubMed] [Europe PMC] [Abstract]
    Cited for: VARIANTS CTRCT15 GLY-134 AND ARG-138.
  7. "Functional impairment of lens aquaporin in two families with dominantly inherited cataracts."
    Francis P., Chung J.-J., Yasui M., Berry V., Moore A., Wyatt M.K., Wistow G., Bhattacharya S.S., Agre P.
    Hum. Mol. Genet. 9:2329-2334(2000) [PubMed] [Europe PMC] [Abstract]
    Cited for: VARIANTS CTRCT15 GLY-134 AND ARG-138.

Entry informationi

Entry nameiMIP_HUMAN
AccessioniPrimary (citable) accession number: P30301
Secondary accession number(s): Q17R41
Entry historyi
Integrated into UniProtKB/Swiss-Prot: April 1, 1993
Last sequence update: April 1, 1993
Last modified: September 3, 2014
This is version 139 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program
DisclaimerAny medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care.

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. Human chromosome 12
    Human chromosome 12: entries, gene names and cross-references to MIM
  2. Human entries with polymorphisms or disease mutations
    List of human entries with polymorphisms or disease mutations
  3. Human polymorphisms and disease mutations
    Index of human polymorphisms and disease mutations
  4. MIM cross-references
    Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot
  5. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3

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