Contacts of the helix formed by residues 1250 - 1255 (chain C) in PDB entry 3FK2
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with PRO1250 (chain C).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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1248C GLY 4.6 0.2 - - - +
1249C VAL* 1.3 95.7 - - + +
1251C LEU* 1.3 66.3 + - - +
1252C THR* 3.3 11.0 - - - +
1253C THR* 3.2 28.2 + - - +
1254C VAL* 4.0 2.1 + - - +
1329C PRO* 3.5 22.6 - - + -
1330C ASP* 6.1 2.0 - - - +
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Residues in contact with LEU1251 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1249C VAL 3.6 0.4 + - - -
1250C PRO* 1.3 72.9 - - - +
1252C THR* 1.3 64.1 + - + +
1254C VAL* 3.1 22.2 + - + +
1255C VAL* 3.5 15.5 - - + +
1262C PRO* 4.1 25.8 - - + -
1324C PHE* 4.5 2.9 - - + -
1328C LEU* 4.1 32.6 - - + +
1329C PRO* 5.1 0.2 - - - +
1332C LEU* 3.8 27.4 - - + -
1367C GLU* 4.2 5.2 - - + +
1368C ASN* 4.1 31.9 - - - +
1371C VAL* 4.2 14.8 - - + -
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Residues in contact with THR1252 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
1250C PRO* 4.3 9.9 - - - +
1251C LEU* 1.3 76.5 - - + +
1253C THR* 1.3 59.8 + - - +
1254C VAL 3.2 0.2 - - - -
1255C VAL* 2.9 30.0 - - - +
1367C GLU* 3.6 35.2 - - + +
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Residues in contact with THR1253 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1245C ASN 4.4 6.5 - - - +
1249C VAL* 3.5 24.5 - - + -
1250C PRO* 3.2 26.6 + - - +
1251C LEU 3.1 0.6 - - - -
1252C THR* 1.3 81.3 + - - +
1254C VAL* 1.3 61.7 + - + +
1255C VAL 3.5 0.8 + - - +
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Residues in contact with VAL1254 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1245C ASN 4.7 0.4 - - - +
1246C TYR* 3.4 58.8 + - + +
1249C VAL* 3.9 12.8 - - + +
1250C PRO 4.2 3.8 - - - +
1251C LEU* 3.3 17.0 - - - +
1253C THR* 1.3 81.7 - - + +
1255C VAL* 1.3 70.2 + - + +
1261C ILE 4.9 0.3 - - - +
1262C PRO* 3.7 14.5 - - + +
1263C ILE* 4.7 4.7 + - - +
1324C PHE* 4.0 26.7 - - + -
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Residues in contact with VAL1255 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1251C LEU* 3.5 22.4 - - + +
1252C THR* 2.9 27.1 - - - +
1253C THR 3.5 1.5 - - - +
1254C VAL* 1.3 85.5 - - - +
1256C THR* 1.3 72.6 + - - +
1257C PRO* 5.0 0.2 - - - +
1259C LYS 4.1 3.6 - - - -
1260C PRO* 3.1 31.2 - - + +
1262C PRO* 3.4 26.5 - - + -
1367C GLU* 4.5 22.7 - - + +
1371C VAL* 4.8 0.2 - - + -
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A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il