; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; CuGenDBv2

Spg035439 (gene) of Sponge gourd (cylindrica) v1 genome

Gene IDSpg035439
OrganismLuffa cylindrica (Sponge gourd (cylindrica) v1)
DescriptionRT_RNaseH_2 domain-containing protein
Genome locationscaffold3:4058644..4060249
RNA-Seq ExpressionSpg035439
SyntenySpg035439
Gene Ontology termsNA
InterPro domainsNA


Homology Show/hide homology
GenBank top hitse value%identityAlignment
EXB53755.1 hypothetical protein L484_022412 [Morus notabilis]2.6e-2133.18Show/hide
Query:  ITNHGWELFCSKPEPVNSQVVREFYVNIDEEEDFQVIVREVAVDWSPGAINSLYNLQDFPYAGYNEMAAVPSNEQLNAAVRE-------------GAY--
        I  HGW  FC  P      +VREFY N+ +     V V+ V V ++  AINS++ L++     Y + A+  ++EQL   + E             GAY  
Subjt:  ITNHGWELFCSKPEPVNSQVVREFYVNIDEEEDFQVIVREVAVDWSPGAINSLYNLQDFPYAGYNEMAAVPSNEQLNAAVRE-------------GAY--

Query:  ----LKKEANTWMRFITQRLLPTTPDSTVSRERVLLAFAILRSLSIDVGKIIAGEIFGC-WCKKVGKLFFPNTISMLCKRAGVPESAEDVILLDKGIIDT
            LK+ A  W  F+T R +P+T   TV+++RVLL ++IL  +S+++ +I   EI  C   +K G L+FP+ I+ L  +A VP   ++ I+ + G I T
Subjt:  ----LKKEANTWMRFITQRLLPTTPDSTVSRERVLLAFAILRSLSIDVGKIIAGEIFGC-WCKKVGKLFFPNTISMLCKRAGVPESAEDVILLDKGIIDT

Query:  QNLARLQ--RTQEAQKG
         +++R+   R   A KG
Subjt:  QNLARLQ--RTQEAQKG

PON35554.1 hypothetical protein PanWU01x14_335450, partial [Parasponia andersonii]6.3e-2336.19Show/hide
Query:  ITNHGWELFCSKPEPVNSQVVREFYVNIDEEEDFQVIVREVAVDWSPGAINSLYNLQDFPYAGYNEMAAVPSNEQLNAAVR-------------EGAY--
        IT H W+ FC+ PE     +VREFY N+ +  +  V VR V V WS  AIN+++ L D P   ++E     +   L   +              +GAY  
Subjt:  ITNHGWELFCSKPEPVNSQVVREFYVNIDEEEDFQVIVREVAVDWSPGAINSLYNLQDFPYAGYNEMAAVPSNEQLNAAVR-------------EGAY--

Query:  ----LKKEANTWMRFITQRLLPTTPDSTVSRERVLLAFAILRSLSIDVGKIIAGEIFGCWCKKVGKLFFPNTISMLCKRAGVPESAEDVILLDKGIIDTQ
            L   A  W  F+   LLPTT   TVS++R+LL  ++L   SI+VG++I  EI  C  +K G LFFP+ I+ LC+ A  P    +  L + G ID  
Subjt:  ----LKKEANTWMRFITQRLLPTTPDSTVSRERVLLAFAILRSLSIDVGKIIAGEIFGCWCKKVGKLFFPNTISMLCKRAGVPESAEDVILLDKGIIDTQ

Query:  NLARLQRTQE
         +AR+  TQE
Subjt:  NLARLQRTQE

PON46472.1 hypothetical protein PanWU01x14_251180, partial [Parasponia andersonii]1.2e-3434.15Show/hide
Query:  ITNHGWELFCSKPEPVNSQVVREFYVNIDEEEDFQVIVREVAVDWSPGAINSLYNLQDFPYAGYNEMAAVPSNEQLNAAVR-------------EGAY--
        IT H W+ FC+ PE     +VREFY N+ + E+  V VR V V WS  AIN+++ L D P   ++E     + + L   +              +GAY  
Subjt:  ITNHGWELFCSKPEPVNSQVVREFYVNIDEEEDFQVIVREVAVDWSPGAINSLYNLQDFPYAGYNEMAAVPSNEQLNAAVR-------------EGAY--

Query:  ----LKKEANTWMRFITQRLLPTTPDSTVSRERVLLAFAILRSLSIDVGKIIAGEIFGCWCKKVGKLFFPNTISMLCKRAGVPESAEDVILLDKGIIDTQ
            L   A  W  F+  RLLPTT   TVS++R+LL  ++L   SI+VG++I  EI  C  +K G LFFP+ I+ LC+ A  P    +  L + G ID  
Subjt:  ----LKKEANTWMRFITQRLLPTTPDSTVSRERVLLAFAILRSLSIDVGKIIAGEIFGCWCKKVGKLFFPNTISMLCKRAGVPESAEDVILLDKGIIDTQ

Query:  NLARL--------------QRTQEAQKGGLVCGIHQILEQLTLSASRQEFAE-----------RQAHTFWNYVKRRDAALRKALQANFSKPYPTLPVFPD
         +AR+               R   A        I Q L+ L    S+QE  +           +Q   FW Y K RD AL+KALQ NF++P PT P FP 
Subjt:  NLARL--------------QRTQEAQKGGLVCGIHQILEQLTLSASRQEFAE-----------RQAHTFWNYVKRRDAALRKALQANFSKPYPTLPVFPD

Query:  DLLNPWIPPPPVEREEEDDDAGQQD
        ++L         E E E D  G  +
Subjt:  DLLNPWIPPPPVEREEEDDDAGQQD

PON59596.1 hypothetical protein PanWU01x14_158080 [Parasponia andersonii]2.4e-2234.75Show/hide
Query:  NEQLNAAVREGAYLKKEANTWMRFITQRLLPTTPDSTVSRERVLLAFAILRSLSIDVGKIIAGEIFGCWCKKVGKLFFPNTISMLCKRAGVPESAEDVIL
        N  LNA   E   L   A  W  F+  RLLPTT   TVS++R+LL +++L   SI+VG++I  EI  C  +K G LFFP+ I+ LC+ A  P    +  L
Subjt:  NEQLNAAVREGAYLKKEANTWMRFITQRLLPTTPDSTVSRERVLLAFAILRSLSIDVGKIIAGEIFGCWCKKVGKLFFPNTISMLCKRAGVPESAEDVIL

Query:  LDKGIIDTQNLARLQRTQEAQ--------------------KGGLVCGIHQILEQLTLSASRQ-------EFAERQAHTFWNYVKRRDAALRKALQANFS
           G ID   +AR+  TQE Q                     G ++  +  + ++L+    +Q       +   +Q   FW Y K RD AL+KALQ NF+
Subjt:  LDKGIIDTQNLARLQRTQEAQ--------------------KGGLVCGIHQILEQLTLSASRQ-------EFAERQAHTFWNYVKRRDAALRKALQANFS

Query:  KPYPTLPVFPDDLLNPWIPPPPVEREEEDDDAGQQD
        +P PT P FP +LL         E E E D  G  +
Subjt:  KPYPTLPVFPDDLLNPWIPPPPVEREEEDDDAGQQD

PON78020.1 hypothetical protein PanWU01x14_023740 [Parasponia andersonii]2.0e-2933.9Show/hide
Query:  VVREFYVNIDEEEDFQVIVREVAVDWSPGAINSLYNLQDFPYAGYNEMAAVPSNEQLNAAVR-------------EGAY------LKKEANTWMRFITQR
        +VREFY N+ + E+  + VR V V WS  AIN+++ L D P   ++E     +  +L   +              +GAY      L   A  W  F+  R
Subjt:  VVREFYVNIDEEEDFQVIVREVAVDWSPGAINSLYNLQDFPYAGYNEMAAVPSNEQLNAAVR-------------EGAY------LKKEANTWMRFITQR

Query:  LLPTTPDSTVSRERVLLAFAILRSLSIDVGKIIAGEIFGCWCKKVGKLFFPNTISMLCKRAGVPESAEDVILLDKGIIDTQNLARL--------------
        LLPTT    VS++R+LL  ++L   SI+VG++I  EI  C  +K G LFFP+ I+ LC+ A  P    +  L + G ID   +AR+              
Subjt:  LLPTTPDSTVSRERVLLAFAILRSLSIDVGKIIAGEIFGCWCKKVGKLFFPNTISMLCKRAGVPESAEDVILLDKGIIDTQNLARL--------------

Query:  QRTQEAQKGGLVCGIHQILEQLTLSASRQEFAERQAHTFWNYVKRRDAALRKALQANFSKPYPTLPVFPDDLLNPWIPPPPVEREEEDDDAGQQD
         R   A        + Q L+ L    S+QE   +Q   FW Y K RD AL+KALQ NF++P PT P FP ++L         E E E D  G  +
Subjt:  QRTQEAQKGGLVCGIHQILEQLTLSASRQEFAERQAHTFWNYVKRRDAALRKALQANFSKPYPTLPVFPDDLLNPWIPPPPVEREEEDDDAGQQD

TrEMBL top hitse value%identityAlignment
A0A2P5AGA5 Uncharacterized protein (Fragment)3.0e-2336.19Show/hide
Query:  ITNHGWELFCSKPEPVNSQVVREFYVNIDEEEDFQVIVREVAVDWSPGAINSLYNLQDFPYAGYNEMAAVPSNEQLNAAVR-------------EGAY--
        IT H W+ FC+ PE     +VREFY N+ +  +  V VR V V WS  AIN+++ L D P   ++E     +   L   +              +GAY  
Subjt:  ITNHGWELFCSKPEPVNSQVVREFYVNIDEEEDFQVIVREVAVDWSPGAINSLYNLQDFPYAGYNEMAAVPSNEQLNAAVR-------------EGAY--

Query:  ----LKKEANTWMRFITQRLLPTTPDSTVSRERVLLAFAILRSLSIDVGKIIAGEIFGCWCKKVGKLFFPNTISMLCKRAGVPESAEDVILLDKGIIDTQ
            L   A  W  F+   LLPTT   TVS++R+LL  ++L   SI+VG++I  EI  C  +K G LFFP+ I+ LC+ A  P    +  L + G ID  
Subjt:  ----LKKEANTWMRFITQRLLPTTPDSTVSRERVLLAFAILRSLSIDVGKIIAGEIFGCWCKKVGKLFFPNTISMLCKRAGVPESAEDVILLDKGIIDTQ

Query:  NLARLQRTQE
         +AR+  TQE
Subjt:  NLARLQRTQE

A0A2P5BCG4 Uncharacterized protein (Fragment)5.9e-3534.15Show/hide
Query:  ITNHGWELFCSKPEPVNSQVVREFYVNIDEEEDFQVIVREVAVDWSPGAINSLYNLQDFPYAGYNEMAAVPSNEQLNAAVR-------------EGAY--
        IT H W+ FC+ PE     +VREFY N+ + E+  V VR V V WS  AIN+++ L D P   ++E     + + L   +              +GAY  
Subjt:  ITNHGWELFCSKPEPVNSQVVREFYVNIDEEEDFQVIVREVAVDWSPGAINSLYNLQDFPYAGYNEMAAVPSNEQLNAAVR-------------EGAY--

Query:  ----LKKEANTWMRFITQRLLPTTPDSTVSRERVLLAFAILRSLSIDVGKIIAGEIFGCWCKKVGKLFFPNTISMLCKRAGVPESAEDVILLDKGIIDTQ
            L   A  W  F+  RLLPTT   TVS++R+LL  ++L   SI+VG++I  EI  C  +K G LFFP+ I+ LC+ A  P    +  L + G ID  
Subjt:  ----LKKEANTWMRFITQRLLPTTPDSTVSRERVLLAFAILRSLSIDVGKIIAGEIFGCWCKKVGKLFFPNTISMLCKRAGVPESAEDVILLDKGIIDTQ

Query:  NLARL--------------QRTQEAQKGGLVCGIHQILEQLTLSASRQEFAE-----------RQAHTFWNYVKRRDAALRKALQANFSKPYPTLPVFPD
         +AR+               R   A        I Q L+ L    S+QE  +           +Q   FW Y K RD AL+KALQ NF++P PT P FP 
Subjt:  NLARL--------------QRTQEAQKGGLVCGIHQILEQLTLSASRQEFAE-----------RQAHTFWNYVKRRDAALRKALQANFSKPYPTLPVFPD

Query:  DLLNPWIPPPPVEREEEDDDAGQQD
        ++L         E E E D  G  +
Subjt:  DLLNPWIPPPPVEREEEDDDAGQQD

A0A2P5CEY2 Uncharacterized protein1.2e-2234.75Show/hide
Query:  NEQLNAAVREGAYLKKEANTWMRFITQRLLPTTPDSTVSRERVLLAFAILRSLSIDVGKIIAGEIFGCWCKKVGKLFFPNTISMLCKRAGVPESAEDVIL
        N  LNA   E   L   A  W  F+  RLLPTT   TVS++R+LL +++L   SI+VG++I  EI  C  +K G LFFP+ I+ LC+ A  P    +  L
Subjt:  NEQLNAAVREGAYLKKEANTWMRFITQRLLPTTPDSTVSRERVLLAFAILRSLSIDVGKIIAGEIFGCWCKKVGKLFFPNTISMLCKRAGVPESAEDVIL

Query:  LDKGIIDTQNLARLQRTQEAQ--------------------KGGLVCGIHQILEQLTLSASRQ-------EFAERQAHTFWNYVKRRDAALRKALQANFS
           G ID   +AR+  TQE Q                     G ++  +  + ++L+    +Q       +   +Q   FW Y K RD AL+KALQ NF+
Subjt:  LDKGIIDTQNLARLQRTQEAQ--------------------KGGLVCGIHQILEQLTLSASRQ-------EFAERQAHTFWNYVKRRDAALRKALQANFS

Query:  KPYPTLPVFPDDLLNPWIPPPPVEREEEDDDAGQQD
        +P PT P FP +LL         E E E D  G  +
Subjt:  KPYPTLPVFPDDLLNPWIPPPPVEREEEDDDAGQQD

A0A2P5DXM3 Uncharacterized protein9.8e-3033.9Show/hide
Query:  VVREFYVNIDEEEDFQVIVREVAVDWSPGAINSLYNLQDFPYAGYNEMAAVPSNEQLNAAVR-------------EGAY------LKKEANTWMRFITQR
        +VREFY N+ + E+  + VR V V WS  AIN+++ L D P   ++E     +  +L   +              +GAY      L   A  W  F+  R
Subjt:  VVREFYVNIDEEEDFQVIVREVAVDWSPGAINSLYNLQDFPYAGYNEMAAVPSNEQLNAAVR-------------EGAY------LKKEANTWMRFITQR

Query:  LLPTTPDSTVSRERVLLAFAILRSLSIDVGKIIAGEIFGCWCKKVGKLFFPNTISMLCKRAGVPESAEDVILLDKGIIDTQNLARL--------------
        LLPTT    VS++R+LL  ++L   SI+VG++I  EI  C  +K G LFFP+ I+ LC+ A  P    +  L + G ID   +AR+              
Subjt:  LLPTTPDSTVSRERVLLAFAILRSLSIDVGKIIAGEIFGCWCKKVGKLFFPNTISMLCKRAGVPESAEDVILLDKGIIDTQNLARL--------------

Query:  QRTQEAQKGGLVCGIHQILEQLTLSASRQEFAERQAHTFWNYVKRRDAALRKALQANFSKPYPTLPVFPDDLLNPWIPPPPVEREEEDDDAGQQD
         R   A        + Q L+ L    S+QE   +Q   FW Y K RD AL+KALQ NF++P PT P FP ++L         E E E D  G  +
Subjt:  QRTQEAQKGGLVCGIHQILEQLTLSASRQEFAERQAHTFWNYVKRRDAALRKALQANFSKPYPTLPVFPDDLLNPWIPPPPVEREEEDDDAGQQD

W9QTD9 Uncharacterized protein1.3e-2133.18Show/hide
Query:  ITNHGWELFCSKPEPVNSQVVREFYVNIDEEEDFQVIVREVAVDWSPGAINSLYNLQDFPYAGYNEMAAVPSNEQLNAAVRE-------------GAY--
        I  HGW  FC  P      +VREFY N+ +     V V+ V V ++  AINS++ L++     Y + A+  ++EQL   + E             GAY  
Subjt:  ITNHGWELFCSKPEPVNSQVVREFYVNIDEEEDFQVIVREVAVDWSPGAINSLYNLQDFPYAGYNEMAAVPSNEQLNAAVRE-------------GAY--

Query:  ----LKKEANTWMRFITQRLLPTTPDSTVSRERVLLAFAILRSLSIDVGKIIAGEIFGC-WCKKVGKLFFPNTISMLCKRAGVPESAEDVILLDKGIIDT
            LK+ A  W  F+T R +P+T   TV+++RVLL ++IL  +S+++ +I   EI  C   +K G L+FP+ I+ L  +A VP   ++ I+ + G I T
Subjt:  ----LKKEANTWMRFITQRLLPTTPDSTVSRERVLLAFAILRSLSIDVGKIIAGEIFGC-WCKKVGKLFFPNTISMLCKRAGVPESAEDVILLDKGIIDT

Query:  QNLARLQ--RTQEAQKG
         +++R+   R   A KG
Subjt:  QNLARLQ--RTQEAQKG

SwissProt top hitse value%identityAlignment
No hits found
Arabidopsis top hitse value%identityAlignment
No hits found

Sequences Show/hide sequences
CDS sequenceShow/hide CDS sequence
ATGGCAAAAACGAGAGGAAGGAAAAAAAGAGAAATAAAGGAGGATGAAGTACGTGTTACGCCTGAAGCTCCTAAGAAGAAGGCAAAGAAGAAAAGAACACCTGCAGAAAG
GGAAGCCAAGTGGCTTAAAAGACTACAAGAGGCTGAAGTTTCTGAAGTTCTGCAGAAGGTCATCGAAGATATTGCAGAGAAGGTAGTTGCTGAGGAAGAACTGAAAGATC
CCGAAAAAGAAAAACATCCTGAAAAGATTGATGAAACAGAGCAAGAGATTCAAGAAAAGGTAGCAACAGATTTGCAAGAGCAAGGATCCGTCGCATCGTCCCGCCGCAAC
CAGAAGGCGGGGCAGATTAAAAGGATTCAGACCGACACTTCTTCTCCACCTACAAGTGAATCGGAAAAAGAGGAACCTGAAAATCAAGAAGAAGCCGAGAAGGAAGCTGT
AGAAGGTCAATCTGAAAATAAGACTCATGAAGATAAGGGCAAAGGTATTGCAGGAGTAGAGGGTCAAGTAGAAGTGGCAAGGCCAGAGGAAAGGAGGGTCGGCATCACAA
ACCATGGCTGGGAGTTATTTTGTTCTAAGCCAGAGCCTGTGAATTCGCAAGTGGTGCGAGAGTTCTACGTGAACATCGACGAGGAAGAGGATTTTCAAGTGATTGTTCGT
GAAGTAGCTGTTGATTGGAGTCCCGGGGCCATAAATTCACTGTACAACCTTCAAGATTTCCCTTATGCTGGTTATAATGAGATGGCGGCAGTGCCATCTAACGAGCAGTT
GAATGCTGCTGTTCGGGAAGGCGCTTATCTGAAGAAGGAAGCCAATACTTGGATGAGATTTATCACGCAGAGGTTGCTTCCAACAACTCCCGACTCCACAGTCTCTCGAG
AAAGAGTTCTTCTGGCTTTTGCAATACTAAGGTCTCTTAGCATCGACGTGGGTAAGATTATTGCTGGTGAAATTTTTGGATGTTGGTGTAAGAAGGTTGGAAAATTGTTC
TTTCCAAACACAATCTCAATGCTGTGTAAGAGAGCGGGGGTTCCAGAAAGTGCAGAAGATGTGATCCTATTAGACAAGGGAATCATTGACACGCAAAACTTGGCACGACT
TCAACGGACACAGGAAGCGCAAAAAGGAGGGCTAGTCTGTGGCATTCACCAAATCTTAGAACAACTCACACTTTCAGCCAGCAGGCAAGAGTTCGCCGAGAGGCAGGCTC
ATACCTTTTGGAATTACGTTAAAAGACGTGATGCTGCATTGAGGAAGGCATTGCAAGCAAACTTTTCAAAGCCTTATCCAACCCTTCCTGTATTCCCTGATGATTTGCTG
AACCCTTGGATCCCACCACCACCCGTTGAGAGAGAAGAAGAAGATGATGATGCTGGTCAGCAGGACTAG
mRNA sequenceShow/hide mRNA sequence
ATGGCAAAAACGAGAGGAAGGAAAAAAAGAGAAATAAAGGAGGATGAAGTACGTGTTACGCCTGAAGCTCCTAAGAAGAAGGCAAAGAAGAAAAGAACACCTGCAGAAAG
GGAAGCCAAGTGGCTTAAAAGACTACAAGAGGCTGAAGTTTCTGAAGTTCTGCAGAAGGTCATCGAAGATATTGCAGAGAAGGTAGTTGCTGAGGAAGAACTGAAAGATC
CCGAAAAAGAAAAACATCCTGAAAAGATTGATGAAACAGAGCAAGAGATTCAAGAAAAGGTAGCAACAGATTTGCAAGAGCAAGGATCCGTCGCATCGTCCCGCCGCAAC
CAGAAGGCGGGGCAGATTAAAAGGATTCAGACCGACACTTCTTCTCCACCTACAAGTGAATCGGAAAAAGAGGAACCTGAAAATCAAGAAGAAGCCGAGAAGGAAGCTGT
AGAAGGTCAATCTGAAAATAAGACTCATGAAGATAAGGGCAAAGGTATTGCAGGAGTAGAGGGTCAAGTAGAAGTGGCAAGGCCAGAGGAAAGGAGGGTCGGCATCACAA
ACCATGGCTGGGAGTTATTTTGTTCTAAGCCAGAGCCTGTGAATTCGCAAGTGGTGCGAGAGTTCTACGTGAACATCGACGAGGAAGAGGATTTTCAAGTGATTGTTCGT
GAAGTAGCTGTTGATTGGAGTCCCGGGGCCATAAATTCACTGTACAACCTTCAAGATTTCCCTTATGCTGGTTATAATGAGATGGCGGCAGTGCCATCTAACGAGCAGTT
GAATGCTGCTGTTCGGGAAGGCGCTTATCTGAAGAAGGAAGCCAATACTTGGATGAGATTTATCACGCAGAGGTTGCTTCCAACAACTCCCGACTCCACAGTCTCTCGAG
AAAGAGTTCTTCTGGCTTTTGCAATACTAAGGTCTCTTAGCATCGACGTGGGTAAGATTATTGCTGGTGAAATTTTTGGATGTTGGTGTAAGAAGGTTGGAAAATTGTTC
TTTCCAAACACAATCTCAATGCTGTGTAAGAGAGCGGGGGTTCCAGAAAGTGCAGAAGATGTGATCCTATTAGACAAGGGAATCATTGACACGCAAAACTTGGCACGACT
TCAACGGACACAGGAAGCGCAAAAAGGAGGGCTAGTCTGTGGCATTCACCAAATCTTAGAACAACTCACACTTTCAGCCAGCAGGCAAGAGTTCGCCGAGAGGCAGGCTC
ATACCTTTTGGAATTACGTTAAAAGACGTGATGCTGCATTGAGGAAGGCATTGCAAGCAAACTTTTCAAAGCCTTATCCAACCCTTCCTGTATTCCCTGATGATTTGCTG
AACCCTTGGATCCCACCACCACCCGTTGAGAGAGAAGAAGAAGATGATGATGCTGGTCAGCAGGACTAG
Protein sequenceShow/hide protein sequence
MAKTRGRKKREIKEDEVRVTPEAPKKKAKKKRTPAEREAKWLKRLQEAEVSEVLQKVIEDIAEKVVAEEELKDPEKEKHPEKIDETEQEIQEKVATDLQEQGSVASSRRN
QKAGQIKRIQTDTSSPPTSESEKEEPENQEEAEKEAVEGQSENKTHEDKGKGIAGVEGQVEVARPEERRVGITNHGWELFCSKPEPVNSQVVREFYVNIDEEEDFQVIVR
EVAVDWSPGAINSLYNLQDFPYAGYNEMAAVPSNEQLNAAVREGAYLKKEANTWMRFITQRLLPTTPDSTVSRERVLLAFAILRSLSIDVGKIIAGEIFGCWCKKVGKLF
FPNTISMLCKRAGVPESAEDVILLDKGIIDTQNLARLQRTQEAQKGGLVCGIHQILEQLTLSASRQEFAERQAHTFWNYVKRRDAALRKALQANFSKPYPTLPVFPDDLL
NPWIPPPPVEREEEDDDAGQQD