Table 1: Inventory of BTB protein genes in the silkworm genome.

SubfamilyProposed nameSilkDB IDKAIKObase IDAmino acid residues
(aa)
Molecular weight
(Da)
PISubcellular localizationDomainChromosome

BTB onlyBTBD1BGIBMGA000517Gene00039618122000956.01nuclBTB1
BTBD2BGIBMGA012231Gene0006603513887010.06mitoBTB1
BTBD3BGIBMGA002026Gene000081413463238.62mitoBTB1
BTBD4BGIBMGA007329Gene001228229259415.91nuclBTB3
BTBD5BGIBMGA002966Gene002082450527995.87cytoBTB4
BTBD6BGIBMGA003094Gene002316366402108.33cytoBTB4
BTBD7BGIBMGA006426Gene003326412456815.00nuclBTB6
BTBD8BGIBMGA006356Gene003489417481906.13cytoBTB6
BTBD9BGIBMGA008687Gene004103288319028.08nuclBTB7
BTBD10NoGene005182787883574.89nuclBTB9
BTBD11BGIBMGA001715Gene006003517560399.12nuclBTB11
BTBD12BGIBMGA009340Gene008379340391226.04cytoBTB14
BTBD13BGIBMGA007642Gene008555361418825.21cytoBTB15
BTBD14BGIBMGA007941Gene008559252290695.18cytoBTB15
BTBD15NoGene016199128145757.73cytoBTB15
BTBD16BGIBMGA001575Gene01216613671554104.96nuclBTB21
BTBD17BGIBMGA011238Gene013474538610926.06mitoBTB23
BTBD18NoGene013871379420448.04nuclBTB24
BTBD19BGIBMGA000033Gene015082287335735.96cytoBTB26
BTBD20BGIBMGA014444Gene016272118132808.96cytoBTBUnknown
BTBD21BGIBMGA011597Gene016080182199665.69nuclBTBUnknown

BTB-ANKABTB1BGIBMGA001072Gene00805211331202468.21nuclANK-BTB13
ABTB2BGIBMGA004120Gene01123412361390908.25nuclANK-BTB19

BTB-BACKBBTB1BGIBMGA006106Gene001734593665285.74cytoBTB-BACK4
BBTB2BGIBMGA013583Gene003242514592795.85nuclBTB-BACK6
BBTB3BGIBMGA005281Gene004340359400227.03nuclBTB-BACK8
BBTB4BGIBMGA002863No669755035.42cytoBTB-BACK10
BBTB5BGIBMGA011825Gene006515405449245.43nuclBTB-BACK11

BTB-BACK-PHRBBP1BGIBMGA007155Gene012272505560125.47cytoBTB-BACK-PHR21
BBP2BGIBMGA005139Gene014633535590375.44cyto/mBTB-BACK-PHR25

BTB-BACK-KelchBBK1BGIBMGA007372Gene001129612653355.09cytoBTB-BACK-Kelch3
BBK2BGIBMGA006093Gene001685646718648.00nuclBTB-BACK-Kelch4
BBK3BGIBMGA011859Gene006441628714127.44nuclBTB-BACK-Kelch 11
BBK4BGIBMGA010339Gene007321686774165.23cyto/mBTB-BACK-Kelch 12
BBK5BGIBMGA004699Gene012782524580828.53nuclBTB/BACK/Kelch22
BBK6BGIBMGA011506Gene013128611668945.90cytoBTB/BACK/Kelch23

BTB-KelchKBTBBGIBMGA012932Gene009636798900096.23cytoBTB-Kelch16

BTB-ZF (C2H2)ZBTB1BGIBMGA002080Gene000027370422266.44nuclBTB-C2H2 zinc finger1
ZBTB2BGIBMGA002948Gene002051269304965.41nuclBTB-C2H2 zinc finger4
ZBTB3BGIBMGA003766Gene002371914998268.50nuclBTB-C2H2 zinc finger4
ZBTB4BGIBMGA002702Gene002544563628246.79nuclBTB-C2H2 zinc finger5
ZBTB5BGIBMGA006492Gene003412269302936.78nuclBTB-C2H2 zinc finger 6
ZBTB6BGIBMGA009907Gene004719456507287.74nuclBTB-C2H2 zinc finger 8
ZBTB7BGIBMGA012517Gene005005581659165.97nuclBTB-C2H2 zinc finger9
ZBTB8BGIBMGA006736Gene005448435480496.02nuclBTB-C2H2 zinc finger10
ZBTB9BGIBMGA007530Gene009012535596366.01nuclBTB-C2H2 zinc finger15
ZBTB10BGIBMGA010850Gene012859705773646.55nuclBTB-C2H2 zinc finger22
ZBTB11BGIBMGA000316Gene012612464512556.25nuclBTB-C2H2 zinc finger22
ZBTB12BGIBMGA000376No511583449.08nuclBTB-C2H2 zinc finger22
ZBTB13NoGene015971292333739.27nuclBTB-C2H2 zinc fingerUnknown

BTB-ZF (FLYWCH)ZBTB14BGIBMGA005898Gene007418299334258.78cytoBTB-FLYWCH zinc finger12
ZBTB15BGIBMGA005879Gene007419338386924.90cytoBTB-FLYWCH zinc finger12
ZBTB16NoGene007155389445216.32cytoBTB-FLYWCH zinc finger12

BTB-HTHHBTB1BGIBMGA008942Gene001524503564148.67nuclBTB-HTH DNA binding motif3
HBTB2BGIBMGA001210Gene007758516571528.61nuclBTB-HTH DNA binding motif13

MATH-BTBMBTBBGIBMGA012495Gene005056434482667.07nuclMATH-BTB9

Note: cyto: cytosol; nucl: nuclear; mito: mitochondrion; m: mitochondrion.