Contacts of the helix formed by residues 531 - 534 (chain B) in PDB entry 2FRV
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 ILE 531 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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17B ILE* 3.9 10.8 - - + -
18B GLU 2.9 16.9 + - - +
19B GLY* 4.7 0.2 - - - -
20B HIS* 3.1 32.5 - - + +
21B LEU* 3.7 32.8 - - + -
39B SER* 3.7 22.2 - - - +
40B THR 4.7 1.3 - - - +
41B LEU* 5.1 6.4 - - + +
357B MET* 4.2 13.7 - - + -
490B LEU* 4.5 3.1 - - + -
529B PRO* 3.6 28.9 - - + -
530B CYS* 1.3 73.0 - - - +
532B ALA* 1.3 64.5 + - - +
535B VAL* 3.2 26.4 + - + +
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Residues in contact with ALA 532 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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16A GLU 4.1 11.0 - - - +
17A CYS* 4.3 5.6 - - - +
18B GLU* 2.6 38.0 + - + +
19B GLY* 4.4 2.1 - - - -
41B LEU* 5.9 5.2 - - + -
43B ARG* 2.8 26.4 + - - +
64B ALA 3.1 18.7 - - - +
65B CYS* 4.5 2.2 - - + -
531B ILE* 1.3 71.0 - - - +
533B CYS* 1.3 56.5 + - - +
535B VAL* 5.6 0.4 - - - -
536B HIS* 3.0 19.2 + - - +
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Residues in contact with CYS 533 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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64B ALA* 4.1 5.6 - - - -
65B CYS* 3.4 6.3 - - - -
68B CYS* 3.0 3.8 - - - -
72B HIS* 3.5 8.3 - - - -
484B VAL* 3.2 22.7 - - + +
530B CYS* 3.6 5.5 + - - +
531B ILE 3.3 0.2 - - - -
532B ALA* 1.3 77.5 - - - +
534B GLY* 1.3 57.8 + - - +
536B HIS* 2.7 28.1 + - - -
537B FCO 2.2 50.3 - - - +
538B NI 2.6 24.2 - - + -
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Residues in contact with GLY 534 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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357B MET* 3.5 30.0 - - - +
358B LYS 4.9 0.2 + - - -
484B VAL* 4.5 0.2 - - - -
486B SER* 4.2 0.4 - - - -
487B THR* 2.8 44.2 + - - +
530B CYS 3.0 10.0 + - - -
531B ILE 3.4 1.4 + - - -
533B CYS* 1.3 80.5 - - - +
535B VAL* 1.3 55.0 + - - +
536B HIS* 3.6 4.6 - - - -
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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