Barrier-to-autointegration factor (Protein name
), BAF_HUMAN from NCBI database.
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Gene name:
BANF1(BAF;BCRG1);
Protein name:
Barrier-to-autointegration factor;
Alternative:
Breakpoint cluster region protein 1;
Organism:
Human (Homo sapiens).
General Annotation
Sub Unit:
Homodimer. Heterodimerizes with BAFL. Binds non-specifically to double-stranded DNA, and is found as a hexamer or dodecamer upon DNA binding. Binds to LEM domain-containing nuclear proteins such as LEMD3/MAN1, TMPO/LAP2 and EMD (emerin). Interacts with CRX and LMNA (lamin-A). Binds linker histone H1.1 and core histones H3 with in vitro affinities of 500-900 and 100-200 nM. Interacts with HIV-1 pre-integration complex in cytoplasm by binding to viral matrix protein and Gag polyprotein.
Function:
Plays fundamental roles in nuclear assembly, chromatin organization, gene expression and gonad development. May potently compress chromatin structure and be involved in membrane recruitment and chromatin decondensation during nuclear assembly. Contains 2 non-specific dsDNA-binding sites which may promote DNA cross-bridging. Exploited by retroviruses for inhibiting self-destructing autointegration of retroviral DNA, thereby promoting integration of viral DNA into the host chromosome. EMD and BAF are cooperative cofactors of HIV-1 infection. Association of EMD with the viral DNA requires the presence of BAF and viral integrase. The association of viral DNA with chromatin requires the presence of BAF and EMD.
Subcellular Location:
Nucleus
Cytoplasm
Chromosome
Significantly enriched at the nuclear inner membrane, diffusely throughout the nucleus during interphase and concentrated at the chromosomes during the M-phase. May be included in HIV-1 virions via its interaction with viral GAG polyprotein. The phosphorylated form (by VRK1) shows a cytoplasmic localization.
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Cited for: NUCLEOTIDE SEQUENCE [MRNA]
4.
"Cloning of human full open reading frames in Gateway(TM) system entry vector (pDONR201)." Ebert L.
,
Schick M.
,
Neubert P.
,
Schatten R.
,
Henze S.
,
Korn B.
Submitted (2004-06) to the EMBL/GenBank/DDBJ databases
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Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA]
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Cited for: FUNCTION IN HIV-1 INTEGRATION;MUTAGENESIS OF LYS-6; PRO-14; LYS-18; ILE-26; LYS-41; LEU-50; LYS-53; LYS-54; TRP-62 AND CYS-80
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Cited for: FUNCTION;MUTAGENESIS OF LYS-6; ASP-9; GLY-25; GLY-27; LEU-46; GLY-47; VAL-51; LYS-53; LYS-54 AND ARG-75
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Cited for: INTERACTION WITH LEMD3/MAN1;MUTAGENESIS OF LYS-6; ARG-8; ASP-9; PRO-14; GLY-25; ILE-26; ARG-37; LYS-41; LEU-46; GLY-47; LEU-50; VAL-51; LYS-53; LYS-54; TRP-62 AND CYS-80
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Cited for: PHOSPHORYLATION AT THR-2; THR-3 AND SER-4;SUBCELLULAR LOCATION
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Cited for: ACETYLATION [LARGE SCALE ANALYSIS] AT THR-2;IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS];CLEAVAGE OF INITIATOR METHIONINE [LARGE SCALE ANALYSIS]
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Cited for: IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS]
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Cited for: ACETYLATION [LARGE SCALE ANALYSIS] AT MET-1;IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS]
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Cited for: IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS]
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Cited for: PHOSPHORYLATION;DEPHOSPHORYLATION;INTERACTION WITH ANKLE2
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Cited for: X-RAY CRYSTALLOGRAPHY (1.9 ANGSTROMS) OF HOMODIMER